7783-06-4 structure, H2S

hydrogen sulfide

CAS No.

7783-06-4

Formula:

H2S

Basic Info

Formula
H2S
Molecular Weight
34.0809
Exact Mass
33.9877
LogP
0.1128
PSA
25.3
Synonyms

HYDROGEN SULFIDE

sewergas

Hepatic gas

H2S

stinkdamp

Siarkowodor

Hepatic acid

sourgas

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Properties

Appearance & Physical State
colourless gas with strong odour of rotten eggs
Density
1.19 (15ºC. vs air)
Boiling Point
-60ºC
Melting Point
-85ºC(lit.)
Flash Point
-82ºC
Stability
Stable. Highly flammable. May form explosive mixture with air. Note wide explosive limits. Incompatible with strong oxidizing agents, many metals. May react violently with metal oxides, copper, fluorine, sodium, ethanal.
Vapor Density
1.19 (15 °C, vs air)
Vapor Pressure
252 psi ( 21 °C)

Safety Info

RTECS
MX1225000
Safety Statements
9-16-36-38-45-61 7
WGK Germany
2
Risk Statements
R12
HS Code
2830909000
RIDADR
UN 1053 2.3
Hazard Class
2.3

MSDS

SDS 1.0
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SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name hydrogen sulfide

1.2 Other means of identification

Product number -
Other names Siarkowodor

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Inorganic substances
Uses advised against no data available

1.4 Supplier's details

Company MOLBASE (Shanghai) Biotechnology Co., Ltd.
Address Floor 4 & 5, Building 12, No. 1001 North Qinzhou Road,
Xuhui District, Shanghai, China
Telephone +86(21)64956998
Fax +86(21)54365166

1.5 Emergency phone number

Emergency phone number +86-400-6021-666
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

2.Hazard identification

2.1 Classification of the substance or mixture

Gases under pressure: Compressed gas

Flammable gases, Category 1

Acute toxicity - Inhalation, Category 2

Hazardous to the aquatic environment, short-term (Acute) - Category Acute 1

2.2 GHS label elements, including precautionary statements

Pictogram(s)
Signal word

Danger

Hazard statement(s)

H220 Extremely flammable gas

H330 Fatal if inhaled

H400 Very toxic to aquatic life

Precautionary statement(s)
Prevention

P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.

P260 Do not breathe dust/fume/gas/mist/vapours/spray.

P271 Use only outdoors or in a well-ventilated area.

P284 [In case of inadequate ventilation] wear respiratory protection.

P273 Avoid release to the environment.

Response

P377 Leaking gas fire: Do not extinguish, unless leak can be stopped safely.

P381 In case of leakage, eliminate all ignition sources.

P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.

P310 Immediately call a POISON CENTER/doctor/…

P320 Specific treatment is urgent (see ... on this label).

P391 Collect spillage.

Storage

P410+P403 Protect from sunlight. Store in a well-ventilated place.

P403 Store in a well-ventilated place.

P403+P233 Store in a well-ventilated place. Keep container tightly closed.

Disposal

P501 Dispose of contents/container to ...

2.3 Other hazards which do not result in classification

none

3.Composition/information on ingredients

3.1 Substances

Chemical name Common names and synonyms CAS number EC number Concentration
hydrogen sulfide hydrogen sulfide 7783-06-4 none 100%

4.First-aid measures

4.1 Description of necessary first-aid measures

General advice

Consult a physician. Show this safety data sheet to the doctor in attendance.

If inhaled

Fresh air, rest. Half-upright position. Artificial respiration may be needed. No mouth-to-mouth artificial respiration. Refer for medical attention.

In case of skin contact

ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention .

In case of eye contact

First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.

If swallowed

Rinse mouth. Refer for medical attention .

4.2 Most important symptoms/effects, acute and delayed

Exposure to very high concentrations causes immediate death. Also death or permanent injury may occur after very short exposure to small quantities. It acts directly upon the nervous system resulting in paralysis of respiratory centers. (EPA, 1998)

4.3 Indication of immediate medical attention and special treatment needed, if necessary

Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand-valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR as necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Sulfur and related compounds/

5.Fire-fighting measures

5.1 Extinguishing media

Suitable extinguishing media

Approach fire from upwind to avoid hazardous vapors and toxic decomposition products. Use fine spray or fog to control fire by preventing its spread and absorbing some of its heat. Water or foam may cause frothing of molten sulfur.

5.2 Specific hazards arising from the chemical

Compound is heavier than air and may travel a considerable distance to source of ignition and flash back. It forms explosive mixtures with air over a wide range. Also reacts explosively with bromine pentafluoride, chlorine trifluoride, nitrogen triiodide, nitrogen trichloride, oxygen difluoride, and phenyl diazonium chloride. When heated to decomposition, it emits highly toxic fumes of oxides of sulfur. Incompatible with many materials including strong oxidizers, metals, strong nitric acid, bromine pentafluoride, chlorine trifluoride, nitrogen triiodide, nitrogen trichloride, oxygen difluoride and phenyl diazonium chloride. Avoid physical damage to containers; sources of ignition; storage near nitric acid, strong oxidizing materials, and corrosive liquids or gases. (EPA, 1998)

5.3 Special protective actions for fire-fighters

Wear self-contained breathing apparatus for firefighting if necessary.

6.Accidental release measures

6.1 Personal precautions, protective equipment and emergency procedures

Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. For personal protection see section 8.

6.2 Environmental precautions

Remove all ignition sources. Evacuate danger area! Consult an expert! Personal protection: gas-tight chemical protection suit including self-contained breathing apparatus. Ventilation. Remove gas with fine water spray.

6.3 Methods and materials for containment and cleaning up

Environmental considerations: Water spill: Use natural barriers or oil spill control booms to limit spill travel. Use natural deep water pockets, excavated lagoons, or sand bag barriers to trap material at bottom. Remove trapped material with suction hoses.

7.Handling and storage

7.1 Precautions for safe handling

Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Avoid exposure - obtain special instructions before use.Provide appropriate exhaust ventilation at places where dust is formed. For precautions see section 2.2.

7.2 Conditions for safe storage, including any incompatibilities

Fireproof. Separated from strong oxidants. Cool. Keep in a well-ventilated room. Install continous monitoring system with alarm.Store in cool, dry, well-ventilated location. Separate from chlorates, nitrates, other oxidizing materials, and hydrocarbons.

8.Exposure controls/personal protection

8.1 Control parameters

Occupational Exposure limit values

no data available

Biological limit values

no data available

8.2 Appropriate engineering controls

Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday.

8.3 Individual protection measures, such as personal protective equipment (PPE)

Eye/face protection

Safety glasses with side-shields conforming to EN166. Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).

Skin protection

Wear impervious clothing. The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique(without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it.

Respiratory protection

Wear dust mask when handling large quantities.

Thermal hazards

no data available

9.Physical and chemical properties

Physical state colourless gas with strong odour of rotten eggs
Colour Pure sulfur exists in two stable crystalline forms, alpha and beta, and at least two amorphous (liquid) forms. Alpha-sulfur: rhombic, octahedral, yellow crystals; beta-sulfur: monoclinic, prismatic, pale-yellow crystals
Odour Pure sulfur is odorless, but traces of hydrocarbon impurity may impart an oily and/or rotten egg odor
Melting point/ freezing point -85ºC(lit.)
Boiling point or initial boiling point and boiling range -60ºC
Flammability Flammable GasExtremely flammable.
Lower and upper explosion limit / flammability limit Lower flammable limit for sulfur dust in air is 35 mg/L ... .
Flash point -82ºC
Auto-ignition temperature 260°C (USCG, 1999)
Decomposition temperature no data available
pH no data available
Kinematic viscosity Dynamic viscosity of liquid (Pa.s): 0.17 at 120°C; 0.008 at 140°C; 0.0064 at 158°C; 5.952 at 160°C; 86.304 at 180°C; 93.0 at 187.8°C; 78.864 at 200°C; 3.72 at 300°C
Solubility 0.4 % (NIOSH, 2016)
Partition coefficient n-octanol/water (log value) no data available
Vapour pressure 252 psi ( 21 °C)
Density and/or relative density 1.19 (15ºC. vs air)
Relative vapour density 1.19 (15 °C, vs air)
Particle characteristics no data available

10.Stability and reactivity

10.1 Reactivity

no data available

10.2 Chemical stability

Preparations containing sulfur may react with metals including silver and copper, resulting in discoloration of the metal.

10.3 Possibility of hazardous reactions

Vapors given off during melting of sulfur may contain sufficient hydrogen sulfide & carbon disulfide to permit ignition of air/vapor mixture on contact with hot surface; such ignition may result in transmission of flames to molten sulfur. ... Sulfur is poor conductor of electricity & tends to develop charges of static electricity during transport or processing; static discharge may lead to ignition of sulfur dust. Fires in heaps of sulfur are frequent & insidious since they may break out again even after original conflagration has ... Been extinguished.The gas is heavier than air and may travel along the ground; distant ignition possible. As a result of flow, agitation, etc., electrostatic charges can be generated.Dust explosion possible if in powder or granular form, mixed with air. If dry, it can be charged electrostatically by swirling, pneumatic transport, pouring, etc.HYDROGEN SULFIDE reacts as an acid and as a reducing agent. Explodes on contact with oxygen difluoride, bromine pentafluoride, chlorine trifluoride, dichlorine oxide, silver fulminate. May ignite and explode when exposed to powdered copper in oxygen [Mertz, V. et al., Ber., 1880, 13, p. 722]. May react similarly with other powdered metals. Ignites on contact with metal oxides and peroxides (barium peroxide, chromium trioxide, copper oxide, lead dioxide, manganese dioxide, nickel oxide, silver oxide, silver dioxide, thallium trioxide, sodium peroxide, mercury oxide, calcium oxide) [Mellor, 1947, vol. 10, p. 129, 141]. Ignites with silver bromate, lead(II) hypochlorite, copper chromate, nitric acid, lead(IV) oxide and rust. May ignite if passed through rusty iron pipes [Mee, A. J., School Sci. Rev., 1940, 22(85), p. 95]. Reacts exothermically with bases. The heat of the reaction with soda lime, sodium hydroxide, potassium hydroxide, barium hydroxide may lead to ignition or explosion of the unreacted portion in the presence of air / oxygen [Mellor, 1947, vol. 10, p. 140].

10.4 Conditions to avoid

no data available

10.5 Incompatible materials

Reacts with oxidizing materials.

10.6 Hazardous decomposition products

Combustion by-products include sulfur dioxide gas.

11.Toxicological information

Acute toxicity

  • Oral: LD50 Rat oral >5000 mg/kg bw
  • Inhalation: LC50 Hamster inhalation >0.047 mg/L 4 hr
  • Dermal: no data available

Skin corrosion/irritation

no data available

Serious eye damage/irritation

no data available

Respiratory or skin sensitization

no data available

Germ cell mutagenicity

no data available

Carcinogenicity

EPA-1

Reproductive toxicity

no data available

STOT-single exposure

no data available

STOT-repeated exposure

no data available

Aspiration hazard

no data available

12.Ecological information

12.1 Toxicity

  • Toxicity to fish: LC50; Species: Lepomis macrochirus (Bluegill); Conditions: freshwater, static; Concentration: <14000 ug/L for 96 hr /formulation
  • Toxicity to daphnia and other aquatic invertebrates: EC50; Species: Daphnia magna (Water flea, age <24 hr); Conditions: freshwater, static; Concentration: >5000000 ug/L for 48 hr; Effect: intoxication, immobilization /90% purity
  • Toxicity to algae: no data available
  • Toxicity to microorganisms: no data available

12.2 Persistence and degradability

Biogenic sulfur compounds originate from non-specific bacterial reduction of organic sulfur, for example plant decomposition, and from specific sulfate reducing bacteria. Sulfate-reducing microbes are strict anaerobes, while the nonspecific reducers may be found in aerobic or anaerobic environments(1). Microbial activity plays a key role in the release and leaching of trace elements such as sulfur from metalliferous peat soils from the Elba, New York region(2).

12.3 Bioaccumulative potential

no data available

12.4 Mobility in soil

no data available

12.5 Other adverse effects

no data available

13.Disposal considerations

13.1 Disposal methods

Product

The material can be disposed of by removal to a licensed chemical destruction plant or by controlled incineration with flue gas scrubbing. Do not contaminate water, foodstuffs, feed or seed by storage or disposal. Do not discharge to sewer systems.

Contaminated packaging

Containers can be triply rinsed (or equivalent) and offered for recycling or reconditioning. Alternatively, the packaging can be punctured to make it unusable for other purposes and then be disposed of in a sanitary landfill. Controlled incineration with flue gas scrubbing is possible for combustible packaging materials.

14.Transport information

14.1 UN Number

ADR/RID: UN1053 IMDG: UN1053 IATA: UN1053

14.2 UN Proper Shipping Name

ADR/RID: HYDROGEN SULPHIDE
IMDG: HYDROGEN SULPHIDE
IATA: HYDROGEN SULPHIDE

14.3 Transport hazard class(es)

ADR/RID: 2.3 IMDG: 2.3 IATA: 2.3

14.4 Packing group, if applicable

ADR/RID: unknown IMDG: unknown IATA: unknown

14.5 Environmental hazards

ADR/RID: yes IMDG: yes IATA: yes

14.6 Special precautions for user

no data available

14.7 Transport in bulk according to Annex II of MARPOL 73/78 and the IBC Code

no data available

15.Regulatory information

15.1 Safety, health and environmental regulations specific for the product in question

Chemical name Common names and synonyms CAS number EC number
hydrogen sulfide hydrogen sulfide 7783-06-4 none
European Inventory of Existing Commercial Chemical Substances (EINECS) Listed.
EC Inventory Listed.
United States Toxic Substances Control Act (TSCA) Inventory Listed.
China Catalog of Hazardous chemicals 2015 Listed.
New Zealand Inventory of Chemicals (NZIoC) Listed.
Philippines Inventory of Chemicals and Chemical Substances (PICCS) Listed.
Vietnam National Chemical Inventory Listed.
Chinese Chemical Inventory of Existing Chemical Substances (China IECSC) Listed.

16.Other information

Information on revision

Creation Date Aug 12, 2017
Revision Date Aug 12, 2017

Abbreviations and acronyms

  • CAS: Chemical Abstracts Service
  • ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
  • RID: Regulation concerning the International Carriage of Dangerous Goods by Rail
  • IMDG: International Maritime Dangerous Goods
  • IATA: International Air Transportation Association
  • TWA: Time Weighted Average
  • STEL: Short term exposure limit
  • LC50: Lethal Concentration 50%
  • LD50: Lethal Dose 50%
  • EC50: Effective Concentration 50%

References

  • IPCS - The International Chemical Safety Cards (ICSC), website: http://www.ilo.org/dyn/icsc/showcard.home
  • HSDB - Hazardous Substances Data Bank, website: https://toxnet.nlm.nih.gov/newtoxnet/hsdb.htm
  • IARC - International Agency for Research on Cancer, website: http://www.iarc.fr/
  • eChemPortal - The Global Portal to Information on Chemical Substances by OECD, website: http://www.echemportal.org/echemportal/index?pageID=0&request_locale=en
  • CAMEO Chemicals, website: http://cameochemicals.noaa.gov/search/simple
  • ChemIDplus, website: http://chem.sis.nlm.nih.gov/chemidplus/chemidlite.jsp
  • ERG - Emergency Response Guidebook by U.S. Department of Transportation, website: http://www.phmsa.dot.gov/hazmat/library/erg
  • Germany GESTIS-database on hazard substance, website: http://www.dguv.de/ifa/gestis/gestis-stoffdatenbank/index-2.jsp
  • ECHA - European Chemicals Agency, website: https://echa.europa.eu/

Disclaimer: The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. We as supplier shall not be held liable for any damage resulting from handling or from contact with the above product.
MSDS
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Name: Hydrogen Sulfide Material Safety Data Sheet
Synonym: Suluretted hydrogen; Hepatic Gas; Hydrosulfuric acid
CAS: 7783-06-4
Section 1 - Chemical Product   MSDS Name:Hydrogen Sulfide Material Safety Data Sheet
Synonym:Suluretted hydrogen; Hepatic Gas; Hydrosulfuric acid

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
7783-06-4 Hydrogen sulfide ca. 100 231-977-3
Hazard Symbols: T+ F+ N
Risk Phrases: 12 26 50

Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Extremely flammable. Very toxic by inhalation. Very toxic to aquatic organisms.The toxicological properties of this material have not been fully investigated.
Potential Health Effects
Eye:
May cause eye irritation. May cause chemical conjunctivitis and corneal damage.
Skin:
May cause skin irritation. May be absorbed through the skin.
Ingestion:
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. Ingestion of large amounts may cause CNS depression.
Inhalation:
Toxic if inhaled. Aspiration may lead to pulmonary edema. Vapors may cause dizziness or suffocation. May cause burning sensation in the chest.
Chronic:
Repeated inhalation may cause chronic bronchitis. Effects may be delayed. Adverse reproductive effects have been reported in animals.

Section 4 - FIRST AID MEASURES
  Eyes: In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Get medical aid.
Skin:
In case of contact, flush skin with plenty of water. Remove contaminated clothing and shoes. Get medical aid if irritation develops and persists. Wash clothing before reuse.
Ingestion:
If swallowed, do not induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. Get medical aid.
Inhalation:
Do NOT use mouth-to-mouth resuscitation. If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively.

Section 5 - FIRE FIGHTING MEASURES
  General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Vapors may form an explosive mixture with air.
Vapors can travel to a source of ignition and flash back. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Will burn if involved in a fire. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. Will be easily ignited by heat, sparks or flame. Extremely flammable gas.
Extinguishing Media:
For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective. For large fires, use water spray, fog or regular foam. DO NOT EXTINGUISH A LEAKING GAS FIRE UNLESS LEAK CAN BE STOPPED.

Section 6 - ACCIDENTAL RELEASE MEASURES
  General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, observing precautions in the Protective Equipment section. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. A vapor suppressing foam may be used to reduce vapors.

Section 7 - HANDLING and STORAGE
  Handling:
Wash thoroughly after handling. Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Keep away from heat, sparks and flame. Avoid ingestion and inhalation. Use only in a chemical fume hood. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. Handle cylinders with care. Protect cylinders from physical damage. Do not heat cylinders by any means to increase the product discharge rate. Use a check valve or trap in the discharge line to prevent backflows into the cylinders. Test atmosphere periodically for hydrogen sulfide. Do not rely on sense of smell.
Storage:
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Flammables-area. Containers should not be subjected to temperatures above 125F.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
  Engineering Controls:
Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use only under a chemical fume hood. Use adequate general or local explosion-proof ventilation to keep airborne levels to acceptable levels.
Exposure Limits CAS# 7783-06-4: United Kingdom, WEL - TWA: 5 ppm TWA; 7 mg/m3 TWA United Kingdom, WEL - STEL: 10 ppm STEL; 14 mg/m3 STEL United States OSHA: ; 20 ppm Ceiling Belgium - TWA: 10 ppm VLE; 14 mg/m3 VLE Belgium - STEL: 15 ppm VLE; 21 mg/m3 VLE France - VME: 5 ppm VME; 7 mg/m3 VME France - VLE: 10 ppm VLE; 14 mg/m3 VLE Germany: 10 ppm TWA; 14 mg/m3 TWA Japan: 5 ppm OEL; 7 mg/m3 OEL Malaysia: 10 ppm TWA; 14 mg/m3 TWA Netherlands: 10 ppm MAC; 15 mg/m3 MAC Russia: 10 mg/m3 TWA Spain: 10 ppm VLA-ED; 14 mg/m3 VLA-ED Spain: 15 ppm VLA-EC; 21 mg/m3 VLA-EC Personal Protective Equipment Eyes: Wear chemical splash goggles and face shield.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
 
Physical State: Gas
Color: colorless
Odor: repulsive - rotten egg-like
pH: Not available.
Vapor Pressure: 394.0 psia @ 100 deg F
Viscosity: Not available.
Boiling Point: -75 deg F (-60 deg C)
Freezing/Melting Point: Not available.
Autoignition Temperature: Not available.
Flash Point: Not applicable.
Explosion Limits, lower: 4
Explosion Limits, upper: 44
Decomposition Temperature:
Solubility in water: Slightly soluble.
Specific Gravity/Density: 0.79 @ 60F
Molecular Formula: H2S
Molecular Weight: 34.074

Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable at room temperature in closed containers under normal storage and handling conditions.
Conditions to Avoid:
Ignition sources, excess heat.
Incompatibilities with Other Materials:
Strong oxidizing agents, Vapors will combust spontaneously when mixed with chlorine, nitrogen trifluoride, or oxygen trifluoride vapors., fluorine.
Hazardous Decomposition Products:
Sulfur oxides (SOx), including sulfur oxide and sulfur dioxide.
Hazardous Polymerization: Not available.

Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 7783-06-4: MX1225000 LD50/LC50:
CAS# 7783-06-4: Inhalation, mouse: LC50 = 634 ppm/1H; Inhalation, mouse: LC50 = 1200 mg/m3/2H; Inhalation, rat: LC50 = 444 ppm.
Carcinogenicity:
Hydrogen sulfide - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

Section 12 - ECOLOGICAL INFORMATION
 

Section 13 - DISPOSAL CONSIDERATIONS
  Products which are considered hazardous for supply are classified as Special Waste and the disposal of such chemicals is covered by regulations which may vary according to location. Contact a specialist disposal company or the local waste regulator for advice. Empty containers must be decontaminated before returning for recycling.

Section 14 - TRANSPORT INFORMATION
 
IATA
Shipping Name: HYDROGEN SULFIDE, LIQUEFIED
Hazard Class: 2.3
UN Number: 1053
Packing Group:
IMO
Shipping Name: HYDROGEN SULFIDE, LIQUEFIED
Hazard Class: 2.3
UN Number: 1053
Packing Group:
RID/ADR
Shipping Name: HYDROGEN SULFIDE, LIQUEFIED
Hazard Class: 2.3
UN Number: 1053
Packing group:
USA RQ: CAS# 7783-06-4: 100 lb final RQ; 45.4 kg final RQ

Section 15 - REGULATORY INFORMATION
 
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T+ F+ N
Risk Phrases:
R 12 Extremely flammable.
R 26 Very toxic by inhalation.
R 50 Very toxic to aquatic organisms.
Safety Phrases:
S 9 Keep container in a well-ventilated place.
S 16 Keep away from sources of ignition - No
smoking.
S 28 After contact with skin, wash immediately
with...
S 33 Take precautionary measures against static
discharges.
S 36/37 Wear suitable protective clothing and
gloves.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
S 61 Avoid release to the environment. Refer to
special instructions/safety data sheets.
WGK (Water Danger/Protection)
CAS# 7783-06-4: 2
Canada
CAS# 7783-06-4 is listed on Canada's DSL List.
CAS# 7783-06-4 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 7783-06-4 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

Spectrum

Mass Spectrum Mass spectrum (electron ionization)
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Analysis Methods

Normal alkane RI, non-polar column, temperature ramp
expand collapse
Column Shape
Capillary
Active Phase(℃)
PONA
Retention index
340.
Temperature Control
Method
temperature ramp
Comments
50. m/0.20 mm/0.50 μm, N2, 2. K/min; T<sub>start</sub>: 35. C; T<sub>end</sub>: 170. C
Reference
Yang, Y.Wang, Z.Zong, B.Yang, H.Determination of sulfur compounds in fluid catalytic cracking gasoline by gas chromatography with a sulfur chemiluminiscence detectorChin. J. Chromatogr.2004, 22, 3, 216-219.
Normal alkane RI, non-polar column, temperature ramp
expand collapse
Column Shape
Capillary
Active Phase(℃)
PONA
Retention index
338.
Temperature Control
Method
temperature ramp
Comments
50. m/0.20 mm/0.50 μm, 2. K/min; T<sub>start</sub>: 30. C; T<sub>end</sub>: 150. C
Reference
Yang, Y.-T.Wang, Z.Han. J.-H.Tian, H.-P.Yang, H.-Y.Determination of sulfur compounds in gasoline fraction of microreactor products by gas chromatography - Atomic emission detectorPetrochemical Technology (Shiyou Huagong)2003, 32, 11, 995-998.
Normal alkane RI, non-polar column, custom temperature program
expand collapse
Column Shape
Capillary
Active Phase(℃)
PONA
Retention index
338.
Temperature Control
Method
custom temperature program
Comments
50. m/0.20 mm/0.50 μm; Program: not specified
Reference
Yang, Y.-T.Wang, Z.Han. J.-H.Tian, H.-P.Yang, H.-Y.Determination of sulfur compounds in gasoline fraction of microreactor products by gas chromatography - Atomic emission detectorPetrochemical Technology (Shiyou Huagong)2003, 32, 11, 995-998.
Normal alkane RI, polar column, temperature ramp
expand collapse
Column Shape
Capillary
Active Phase(℃)
TC-Wax
Retention index
480.
Temperature Control
Method
temperature ramp
Comments
60. m/0.25 mm/0.25 μm, N2, 3. K/min, 220. C @ 40. min; T<sub>start</sub>: 70. C
Reference
Ishizaki, S.Tachihara, T.Tamura, H.Yanai, T.Kitahara, T.Evaluation of odour-active compounds in roasted shrimp (Sergia lucens Hansen) by aroma extract dilution analysisFlavour Fragr. J.2005, 20, 6, 562-566.
Normal alkane RI, polar column, custom temperature program
expand collapse
Column Shape
Capillary
Active Phase(℃)
TC-Wax
Retention index
480.
Temperature Control
Method
custom temperature program
Comments
Program: not specified
Reference
Kraft, P.Switt, K.A.D. (Eds)Perspectives in Flavor and Fragrance ResearchWiley-VCH, Weinheim, Germany, 2005, 251.

Toxicity

ACUTE TOXICITY DATA
expand collapse
Type of Test
LCLo - Lowest published lethal concentration
Exposure Route
Inhalation
Species Observed
Human
Dose/Duration
600 ppm/30M
Toxic Effects
Details of toxic effects not reported other than lethal dose value--
Reference
Practical Toxicology of Plastics, Lefaux, R., Cleveland, OH, Chemical Rubber Co., 1968 Volume(issue)/page/year: -,207,1968
ACUTE TOXICITY DATA
expand collapse
Type of Test
LCLo - Lowest published lethal concentration
Exposure Route
Inhalation
Species Observed
Human - man
Dose/Duration
5700 ug/kg
Toxic Effects
Behavioral--coma<br>Lungs, Thorax, or Respiration--chronic pulmonary edema
Reference
Archives des Maladies Professionnelles de Medecine du Travail et de Securite Sociale. (SPPIF, B.P.22, F-41353 Vineuil, France) V.7- 1946- Volume(issue)/page/year: 44,483,1983
ACUTE TOXICITY DATA
expand collapse
Type of Test
LCLo - Lowest published lethal concentration
Exposure Route
Inhalation
Species Observed
Human
Dose/Duration
800 ppm/5M
Toxic Effects
Details of toxic effects not reported other than lethal dose value--
Reference
Tabulae Biologicae. (The Hague, Netherlands) V.1-22, 1925-63. Discontinued. Volume(issue)/page/year: 3,231,1933