CAS No. 108-90-7

Formula: C6H5Cl
Basic Info

Chlorobenzene is an aromatic organic compound with the chemical formula C6H5Cl. This colorless, flammable liquid is a common solvent and a widely used intermediate in the manufacture of other chemicals.

Molecular Weight
Exact Mass


monochloroacetic anhydride

phenyl chloride

Chloroacetic acid anhydride

2-Chloroacetic anhydride

Chloroacetic anhydride

Benzene, chloro-

Monochloroacetic acid anhydride


Chloroacetyl anhydride

Acetic acid,chloro-,anhydride



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Appearance & Physical State
colourless liquid
Boiling Point
Melting Point
Freezing Point
Flash Point
Refractive Index
Water Solubility
0.4 g/L (20 ºC)
Stable. Incompatible with oxidizing agents. Flammable. Attacks some types of plastics, rubber and coatings.
Storage Condition
Vapor Density
3.86 (vs air)
Vapor Pressure
11.8 mm Hg ( 25 °C)
Safety Info
Safety Statements
WGK Germany
Risk Statements
R10; R20; R51/53
HS Code
UN 1134
Hazard Class
Packing Group
Caution Statement
P210; P261; P370 + P378
Hazard Codes
Hazard Declaration
Caution Statement
SDS 1.0
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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


1.1 GHS Product identifier

Product name chlorobenzene

1.2 Other means of identification

Product number -
Other names monochloro-benzene

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Volatile organic compounds
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

Flammable liquids, Category 3

Skin irritation, Category 2

Acute toxicity - Inhalation, Category 4

Hazardous to the aquatic environment, long-term (Chronic) - Category Chronic 2

2.2 GHS label elements, including precautionary statements

Signal word


Hazard statement(s)

H226 Flammable liquid and vapour

H315 Causes skin irritation

H332 Harmful if inhaled

H411 Toxic to aquatic life with long lasting effects

Precautionary statement(s)

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

P233 Keep container tightly closed.

P240 Ground and bond container and receiving equipment.

P241 Use explosion-proof [electrical/ventilating/lighting/...] equipment.

P242 Use non-sparking tools.

P243 Take action to prevent static discharges.

P280 Wear protective gloves/protective clothing/eye protection/face protection.

P264 Wash ... thoroughly after handling.

P261 Avoid breathing dust/fume/gas/mist/vapours/spray.

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

P273 Avoid release to the environment.


P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water [or shower].

P370+P378 In case of fire: Use ... to extinguish.

P302+P352 IF ON SKIN: Wash with plenty of water/...

P321 Specific treatment (see ... on this label).

P332+P313 If skin irritation occurs: Get medical advice/attention.

P362+P364 Take off contaminated clothing and wash it before reuse.

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

P312 Call a POISON CENTER/doctor/…if you feel unwell.

P391 Collect spillage.


P403+P235 Store in a well-ventilated place. Keep cool.


P501 Dispose of contents/container to ...

2.3 Other hazards which do not result in classification


3.Composition/information on ingredients

3.1 Substances

Chemical name Common names and synonyms CAS number EC number Concentration
chlorobenzene chlorobenzene 108-90-7 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. Refer for medical attention.

In case of skin contact

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. Do NOT induce vomiting. Refer for medical attention .

4.2 Most important symptoms/effects, acute and delayed

Irritating to skin, eyes and mucous membranes. Repeated exposure of skin may cause dermatitis due to defatting action. Chronic inhalation of vapors or mist may result in damage to lungs, liver, and kidneys. Acute vapor exposures can cause symptoms ranging from coughing to transient anesthesia and central nervous system depression. (USCG, 1999)

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. /Benzene and Related Compounds/

5.Fire-fighting measures

5.1 Extinguishing media

Suitable extinguishing media

Wear self contained breathing apparatus for fire fighting if necessary.

5.2 Specific hazards arising from the chemical

Special Hazards of Combustion Products: Burning in open flame can form toxic phosgene and hydrogen chloride gases. Behavior in Fire: Heavy vapor can travel a considerable distance to a source of ignition and flash back. (USCG, 1999)

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. Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Ventilation. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.

6.3 Methods and materials for containment and cleaning up

ACCIDENTAL RELEASE MEASURES. Personal precautions, protective equipment and emergency procedures: Use personal protective equipment. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Remove all sources of ignition. Beware of vapours accumulating to form explosive concentrations. Vapours can accumulate in low areas. Environmental precautions: Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided. Methods and materials for containment and cleaning up: Contain spillage, and then collect with an electrically protected vacuum cleaner or by wet-brushing and place in container for disposal according to local regulations.

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.Keep container tightly closed in a dry and well-ventilated place. Containers whigh are opened must be carefully resealed and kept upright to prevent leakage.

8.Exposure controls/personal protection

8.1 Control parameters

Occupational Exposure limit values

NIOSH questioned whether the PEL [TWA 75 ppm] proposed for chlorobenzene was adequate to protect workers from recognized health hazards.

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 liquid
Colour Colorless liquid
Odour Faint, not unpleasant odor
Melting point/ freezing point -45ºC
Boiling point or initial boiling point and boiling range 132°C(lit.)
Flammability Class IC Flammable Liquid: Fl.P. at or above 22.78°C and below 37.78°C.Flammable. Gives off irritating or toxic fumes (or gases) in a fire.
Lower and upper explosion limit / flammability limit Lower flammable limit: 1.3%; Upper flammable limit: 9.6%
Flash point 27°C
Auto-ignition temperature 636.67°C
Decomposition temperature no data available
pH no data available
Kinematic viscosity 0.806 mPa.s at 20°C
Solubility In water:0.4 g/L (20 ºC)
Partition coefficient n-octanol/water (log value) log Kow = 2.84
Vapour pressure 11.8 mm Hg ( 25 °C)
Density and/or relative density 1.106g/mLat 25°C(lit.)
Relative vapour density 3.86 (vs air)
Particle characteristics no data available

10.Stability and reactivity

10.1 Reactivity

no data available

10.2 Chemical stability

Stable under recommended storage conditions.

10.3 Possibility of hazardous reactions

Dangerous fire hazard when exposed to heat or flame.CHLOROBENZENE undergoes a sometimes explosive reaction with powdered sodium or phosphorus trichloride + sodium. May react violently with dimethyl sulfoxide. Reacts vigorously with oxidizing agents. Attacks some forms of plastic, rubber and coatings. Forms a shock sensitive solvated salt with silver perchlorate. .

10.4 Conditions to avoid

no data available

10.5 Incompatible materials

Contact with strong oxidizers may cause fires and explosions.

10.6 Hazardous decomposition products

Flammable liquid. Vapors are heavier than air and may travel to a source of ignition and flash back. Combustion by-products include phosgene and hydrogen chloride gases.

11.Toxicological information

Acute toxicity

  • Oral: LD50 Rat oral 2.29 g/kg
  • Inhalation: LC50 Rat (male) inhalation 2965 ppm (13.9 mg/L) for 6 hr /99% purity/
  • 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


Cancer Classification: Group D Not Classifiable as to Human Carcinogenicity

Reproductive toxicity

No information is available on the reproductive or developmental effects of chlorobenzene in humans. Chronic inhalation exposure of rats to chlorobenzene did not adversely affect reproductive performance or fertility. However, a slight increase in the incidence of degenerative testicular changes was observed. Chlorobenzene does not appear to be a developmental toxicant and did not produce structural malformations in rats and rabbits acutely exposed via inhalation.

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: Danio rerio (Zebra danio); Conditions: freshwater, static, 23°C, pH 7.4, hardness 320 mg/L CaCO3, dissolved oxygen > or =70%; Concentration: 10500 ug/L for 48 hr (95% confiedence interval: 7100-15500 ug/L)
  • Toxicity to daphnia and other aquatic invertebrates: EC50; Species: Daphnia magna (Water flea); Conditions: freshtwater, static; Concentration: 4300 ug/L for 24 hr (95% confidence interval: 3250-5700 ug/L); Effect: intoxication, immobilization
  • Toxicity to algae: EC50; Species: Pseudokirchneriella subcapitata (Green algae) initial concentration 500000 cells/L; Conditions: static, 20°C; Concentration: 12500 ug/L for 96 hr; Effect: growth, general
  • Toxicity to microorganisms: no data available

12.2 Persistence and degradability

Information ... concerning the biodegradation potential of chlorobenzene indicates that this compound will ... eventually degrade, but not at an environmentally important rate unless the microorganisms present are already growing on another hydrocarbon source.

12.3 Bioaccumulative potential

BCF values of 4.3 to 39.6 and 3.9 to 22.8 were measured for chlorobenzene in carp (Cyprinus carpio) at chemical concentrations of 0.15 and 0.015 mg/L, respectively(1). A log BCF of 2.65 has been reported for chlorobenzene in fathead minnows(2) that corresponds to a BCF of 450(SRC). A BCF of 41 was measured in bluegill fish (Lepomis macrochirus) over a 14-day exposure period(3). According to a classification scheme(4), these BCF values suggest the potential for bioconcentration in aquatic organisms ranges from low to high, provided the compound is not metabolized by the organism(SRC). Dissolved organic matter that is present in interstitial water may greatly reduce the amount of a chemical that is available for accumulation(5). In one set of experiments, midge larvae were found to accumulate higher tissue-to-sediment ratios of chlorobenzene from a low-organic content sediment than from a high-organic content sediment(5). BCFs of 0.25 (from sediment), 11 (from interstitial water), and 10 (overlying water) were measured for midge larvae exposed to chlorobenzene under equilibrium exposure conditions(5). BCFs of 0.15 (from sediment), 310 (from interstitial water), and 5 (from overlying water) were measured for midge larvae exposed to chlorobenzene sorbed to high-organic content sediment under nonequilibrium exposure conditions(5). BCFs of 0.72 (from sediment), 18 (from interstitial water), and 2,187 (from overlying water) were measured for midge larvae exposed to chlorobenzene sorbed to low-organic content sediment under nonequilibrium exposure conditions(5).

12.4 Mobility in soil

Koc values of 313.1 and 146.5 were measured on Captina silt loam (1.49% organic carbon) and McLaurin sandy loam, (0.66% organic carbon), respectively(1). Equilibrium sorption constant (Ks) values of 0.295 and 0.09 were determined in Eustis fine sand (13 g/kg clay, 32 g/kg silt, 955 g/kg sand, 3.9 g/kg organic carbon) and Tampa (6 g/kg clay, 23 g/kg silt, 971 g/kg sand, and 1.3 g/kg organic carbon) soils, respectively(2); corresponding Koc values are 76 and 69(SRC). Equilibrium sorption coefficients of 0.014 and 10.20 were measured on Borden (98% sand, 1% silt, 1% clay, 0.29% organic carbon) and Mt. Lemmon (60.3% sand, 24.0% silt, 15.7% clay, 12.6% organic carbon) soils, respectively(3); corresponding Koc values are 4.8 and 81(SRC). According to a classification scheme(4), these Koc values suggest that chlorobenzene is expected to have moderate to very high mobility in soil(SRC). The sorption isotherm for chlorobenzene onto muck soil (49.0% organic carbon) was linear(5). A Kd value of 166.34 was measured for chlorobenzene using dewatered activated sludge (18% solids) that had been dried and sieved; 3.28% of the chlorobenzene was desorbed during the desorption phase of the experiment(6). Partition coefficients of 0.35, 0.33, and 0.38 were measured for chlorobenzene on primary sludge, mixed liquor solids, and digested sludge, respectively(7). Sorption coefficients of 0.48 and 0.29 were measured on primary sludge and anaerobically digested sludge, respectively(8). Partition coefficients of 48 and 29 were measured in high organic carbon (14.5%) and low organic carbon (3.6%) Sherman Island sediments, respectively(9).

12.5 Other adverse effects

no data available

13.Disposal considerations

13.1 Disposal methods


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: UN1134 IMDG: UN1134 IATA: UN1134

14.2 UN Proper Shipping Name


14.3 Transport hazard class(es)


14.4 Packing group, if applicable


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
chlorobenzene chlorobenzene 108-90-7 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%


  • IPCS - The International Chemical Safety Cards (ICSC), website:
  • HSDB - Hazardous Substances Data Bank, website:
  • IARC - International Agency for Research on Cancer, website:
  • eChemPortal - The Global Portal to Information on Chemical Substances by OECD, website:
  • CAMEO Chemicals, website:
  • ChemIDplus, website:
  • ERG - Emergency Response Guidebook by U.S. Department of Transportation, website:
  • Germany GESTIS-database on hazard substance, website:
  • ECHA - European Chemicals Agency, website:

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.
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Name: Chlorobenzene Material Safety Data Sheet
Synonym: Benzene Chloride; Chlorobenzene; Chlorobenzol; MCB; Monochlorobenzene; Phenyl Chloride
CAS: 108-90-7
Section 1 - Chemical Product   MSDS Name:Chlorobenzene Material Safety Data Sheet
Synonym:Benzene Chloride; Chlorobenzene; Chlorobenzol; MCB; Monochlorobenzene; Phenyl Chloride

CAS# Chemical Name content EINECS#
108-90-7 Chlorobenzene 100 203-628-5
Hazard Symbols: XN N
Risk Phrases: 10 20 51/53

Flammable. Harmful by inhalation. Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Potential Health Effects
Contact produces irritation, tearing, and burning pain.
Causes skin irritation. Prolonged and/or repeated contact may cause defatting of the skin and dermatitis. Produces acneiform eruptions.
May cause liver and kidney damage. May cause central nervous system depression, characterized by excitement, followed by headache, dizziness, drowsiness, and nausea. Advanced stages may cause collapse, unconsciousness, coma and possible death due to respiratory failure. May be harmful if swallowed. May cause hemolysis.
Inhalation of high concentrations may cause central nervous system effects characterized by nausea, headache, dizziness, unconsciousness and coma. Causes respiratory tract irritation. May cause effects similar to those described for ingestion. Exposure may cause bone marrow changes. Exposure may cause blood abnormalities.
Chronic inhalation and ingestion may cause effects similar to those of acute inhalation and ingestion. Repeated contact may result in skin burns.

  Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.
Do not induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. Do NOT use mouth-to-mouth resuscitation.
Notes to Physician:

  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. Use water spray to keep fire-exposed containers cool. Flammable liquid and vapor. Vapors may be heavier than air. They can spread along the ground and collect in low or confined areas. Containers may explode when heated.
Extinguishing Media:
Use water spray to cool fire-exposed containers. Water may be ineffective. Do NOT use straight streams of water. For small fires, use dry chemical, carbon dioxide, water spray or regular foam. Cool containers with flooding quantities of water until well after fire is out. For large fires, use water spray, fog or regular foam.

  General Information: Use proper personal protective equipment as indicated in Section 8.
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. A vapor suppressing foam may be used to reduce vapors. Water spray may reduce vapor but may not prevent ignition in closed spaces.

Section 7 - HANDLING and STORAGE
Wash thoroughly after handling. Use with adequate ventilation.
Ground and bond containers when transferring material. 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. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Keep away from heat and flame. Keep away from sources of ignition.
Store in a tightly closed container. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances.

  Engineering Controls:
Use process enclosure, local exhaust ventilation, or other engineering controls to control airborne levels below recommended exposure limits. Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower.
Exposure Limits CAS# 108-90-7: United Kingdom, WEL - TWA: 1 ppm TWA United Kingdom, WEL - STEL: 3 ppm STEL United States OSHA: 75 ppm TWA; 350 mg/m3 TWA Belgium - TWA: 10 ppm VLE; 47 mg/m3 VLE Belgium - STEL: 20 ppm VLE; 94 mg/m3 VLE France - VME: 10 ppm VME Germany: 10 ppm TWA; 47 mg/m3 TWA Japan: 10 ppm OEL; 46 mg/m3 OEL Malaysia: 10 ppm TWA; 46 mg/m3 TWA Netherlands: 10 ppm MAC; 46 mg/m3 MAC Russia: 100 mg/m3 TWA Russia: 50 mg/m3 STEL Spain: 10 ppm VLA-ED; 47 mg/m3 VLA-ED Spain: 20 ppm VLA-EC; 94 mg/m3 VLA-EC Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Wear appropriate protective gloves to prevent skin exposure.
Wear appropriate protective clothing to prevent skin exposure.
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.

Physical State: Liquid
Color: clear, colorless
Odor: mild odor - almond-like
pH: Not available.
Vapor Pressure: 12 mm Hg @ 25 C
Viscosity: 0.8 mPa s 20 C
Boiling Point: 132 deg C
Freezing/Melting Point: -46 deg C
Autoignition Temperature: 638.8 deg C ( 1,181.84 deg F)
Flash Point: 29.5 deg C ( 85.10 deg F)
Explosion Limits, lower: 1.8
Explosion Limits, upper: 9.6
Decomposition Temperature: Not available.
Solubility in water: Insoluble in water.
Specific Gravity/Density: 1.107 @ 4C
Molecular Formula: C6H5Cl
Molecular Weight: 112.488

  Chemical Stability:
Conditions to Avoid:
Incompatible materials, ignition sources, excess heat.
Incompatibilities with Other Materials:
Contact with oxidizing agents may cause fires and explosions. Reacts violently with dimethyl sulfoxide, silver perchlorate, powdered sodium and phosphorus trichloride + sodium.
Hazardous Decomposition Products:
Hydrogen chloride, phosgene, carbon monoxide, carbon dioxide.
Hazardous Polymerization: Has not been reported.

CAS# 108-90-7: CZ0175000 LD50/LC50:
CAS# 108-90-7: Inhalation, rat: LC50 = 2965 ppm; Oral, mouse: LD50 = 2300 mg/kg; Oral, rabbit: LD50 = 2250 mg/kg; Oral, rat: LD50 = 1110 mg/kg.
Skin, rabbit: LD50 >2200 Carcinogenicity:
Chlorobenzene - ACGIH: A3 - Confirmed animal carcinogen with unknown relevance to Other:
See actual entry in RTECS for complete information.


  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.

Hazard Class: 3
UN Number: 1134
Packing Group: III
Hazard Class: 3
UN Number: 1134
Packing Group: III
Hazard Class: 3
UN Number: 1134
Packing group: III
USA RQ: CAS# 108-90-7: 100 lb final RQ; 45.4 kg final RQ

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XN N
Risk Phrases:
R 10 Flammable.
R 20 Harmful by inhalation.
R 51/53 Toxic to aquatic organisms, may cause
long-term adverse effects in the aquatic environment.
Safety Phrases:
S 24/25 Avoid contact with skin and eyes.
S 61 Avoid release to the environment. Refer to
special instructions/safety data sheets.
WGK (Water Danger/Protection)
CAS# 108-90-7: 2
CAS# 108-90-7 is listed on Canada's DSL List.
CAS# 108-90-7 is listed on Canada's Ingredient Disclosure List.
CAS# 108-90-7 is listed on the TSCA inventory.

NMR Spectrum 1H NMR : 90 MHz in CDCl3
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IR Spectrum IR : liquid film
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Mass Spectrum Mass spectrum (electron ionization)
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Raman Spectrum Raman : 4880 A,100M,liquid
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UV Spectrum UV/Visible spectrum
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