Butyl acrylate

CAS No. 141-32-2

Formula: C7H12O2
Basic Info

Butyl acrylate is a chemical used in manufacturing.

Molecular Weight
Exact Mass

Butyl propenoate


Butyl acrylate

acrylic acid butyl ester

n-Butyl propenoate


2-Propenoic acid, butyl ester

acrylic acid n-butyl ester

Butyl acrylate,stabilized

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Appearance & Physical State
Clear, Colorless Liquid
0.883 g/mL at 20ºC
Boiling Point
61-63ºC at 60 mm Hg(lit.)
Melting Point
Flash Point
Refractive Index
n20/D 1.410(lit.)
Water Solubility
1.4 g/L (20 ºC)
Stable. Flammable. Incompatible with strong oxidizing agents, strong acids, strong bases.
Storage Condition
Flammables Area
Vapor Density
>1 (vs air)
Vapor Pressure
3.3 mm Hg ( 20 °C)
Safety Info
Safety Statements
WGK Germany
Risk Statements
R10; R36/37/38; R43
HS Code
UN 2348
Hazard Class
Packing Group
Caution Statement
P261; P273; P280; P305 + P351 + P338
Hazard Codes
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 10, 2017

Revision Date: Aug 10, 2017


1.1 GHS Product identifier

Product name Butyl acrylate

1.2 Other means of identification

Product number -
Other names Butyl propenoate

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Adhesives and sealant chemicals,Intermediates,Paint additives and coating additives not described by other categories
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

Eye irritation, Category 2

Skin sensitization, Category 1

Specific target organ toxicity – single exposure, Category 3

2.2 GHS label elements, including precautionary statements

Signal word


Hazard statement(s)

H226 Flammable liquid and vapour

H315 Causes skin irritation

H319 Causes serious eye irritation

H317 May cause an allergic skin reaction

H335 May cause respiratory irritation

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.

P272 Contaminated work clothing should not be allowed out of the workplace.

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


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.

P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

P337+P313 If eye irritation persists: Get medical advice/attention.

P333+P313 If skin irritation or rash occurs: Get medical advice/attention.

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

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


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

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

P405 Store locked up.


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
Butyl acrylate Butyl acrylate 141-32-2 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

Remove contaminated clothes. Rinse skin with plenty of water or shower. 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. Give one or two glasses of water to drink. Refer for medical attention .

4.2 Most important symptoms/effects, acute and delayed

Vapor is irritating when breathed at high concentrations. Contact with liquid causes irritation of skin and burning of eyes. (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. /Esters and related compounds/

5.Fire-fighting measures

5.1 Extinguishing media

Suitable extinguishing media

Use water spray to keep fire exposed containers cool. Solid streams of water may be ineffective or may cause frothing. Use water spray, dry chemical, foam, or carbon dioxide. Fight fire from protected location or maximum possible distance.

5.2 Specific hazards arising from the chemical

Excerpt from ERG Guide 129P [Flammable Liquids (Water-Miscible / Noxious)]: HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Those substances designated with a (P) may polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water. (ERG, 2016)

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

Personal protection: chemical protection suit and filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Remove all ignition sources. Collect leaking and spilled liquid in covered containers as far as possible. 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

SRP: Wastewater from contaminant suppression, cleaning of protective clothing/equipment, or contaminated sites should be contained and evaluated for subject chemical or decomposition product concentrations. Concentrations shall be lower than applicable environmental discharge or disposal criteria. Alternatively, pretreatment and/or discharge to a permitted wastewater treatment facility is acceptable only after review by the governing authority and assurance that "pass through" violations will not occur. Due consideration shall be given to remediation worker exposure (inhalation, dermal and ingestion) as well as fate during treatment, transfer and disposal. If it is not practicable to manage the chemical in this fashion, it must be evaluated in accordance with EPA 40 CFR Part 261, specifically Subpart B, in order to determine the appropriate local, state and federal requirements for disposal.

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. Cool. Keep in the dark. Separated from strong oxidants. Store only if stabilized.Do not store unless stabilized. Before entering a confined space where butyl acrylate may be present, check to make sure that an explosive concentration does not exist. Store in tightly closed containers in a cool, well ventilated, fireproof area. Metal containers involving the transfer of this chemical should be grounded and bonded. Where possible, automatically pump liquid from drums or other storage containers to process containers. Drums must be equipped with self-closing valves, pressure vacuum bungs, and flame arresters. Use only nonsparking tools and equipment, especially when opening and closing containers of this chemical. Sources of ignition, such as smoking and open flames, are prohibited where this chemical is used, handled, or stored in a manner that could create a potential fire or explosion hazard.

8.Exposure controls/personal protection

8.1 Control parameters

Occupational Exposure limit values

Recommended Exposure Limit: 10 hr Time-Weighted avg: 10 ppm (55 mg/cu m).

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 Clear, Colorless Liquid
Colour Colorless liquid
Odour Sharp, fragrant
Melting point/ freezing point 4°C(lit.)
Boiling point or initial boiling point and boiling range 145°C(lit.)
Flammability Class II Combustible Liquid: Fl.P. at or above 37.78°C and below 60°C.Flammable.
Lower and upper explosion limit / flammability limit Lower flammable limit: 1.7% by volume; Upper flammable limit: 9.9% by volume
Flash point 36°C
Auto-ignition temperature 292.78°C
Decomposition temperature no data available
pH no data available
Kinematic viscosity no data available
Solubility In water:1.4 g/L (20 ºC)
Partition coefficient n-octanol/water (log value) log Kow = 2.36
Vapour pressure 3.3 mm Hg ( 20 °C)
Density and/or relative density 0.894g/mLat 25°C(lit.)
Relative vapour density >1 (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

A flammable liquid when exposed to heat or flame.Vapours are uninhibited and may polymerize, causing blockage of vents.BUTYL ACRYLATE reacts exothermically with acids to liberate heat along with alcohols and acids. Reacts with strong oxidizing agents, perhaps sufficiently exothermically to ignite the reaction products. Mixing with basic solutions generates heat. Generates flammable hydrogen with alkali metals and hydrides. Attacks many plastics [Handling Chemicals Safely 1980. p. 233]. Polymerizes readily, generating much heat in a reaction that is favored by heat and light [Handling Chemicals Safely 1980. p. 235].

10.4 Conditions to avoid

no data available

10.5 Incompatible materials

Incompatible with oxidizing materials.

10.6 Hazardous decomposition products

When heated to decomposition it emits acrid and irritating fumes.

11.Toxicological information

Acute toxicity

  • Oral: LD50 Rat oral 3,730 mg/kg
  • Inhalation: LC50 Rat inhalation 2730 ppm/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


Evaluation: No epidemiological data relevant to the carcinogenicity of n-butyl acrylate were available. There is inadequate evidence in experimental animals for the carcinogenicity of n-butyl acrylate. Overall Evaluation: n-Butyl acrylate is not classifiable as to its carcinogenicity to humans (Group 3).

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: Oncorhynchus mykiss (Rainbow trout); Conditions: flow through, hardness 43-44 mg/L (as CaCO3), alkalinity 56-57 mg/L (as CaCO3), pH 7.5-7.9, conductivity 102-115 uMhos/cm, total organic carbon <1 mg/L, suspended solids 0.4 mg/L; Concentration: 5.2 mg/L for 96 hr
  • Toxicity to daphnia and other aquatic invertebrates: LC50; Species: Daphnia magna (Water flea, age < or =24 hr); Conditions: freshwater, static, 20-22°C, pH 7.6-7.7; Concentration: 230 mg/L for 24 hr /formulation
  • Toxicity to algae: no data available
  • Toxicity to microorganisms: no data available

12.2 Persistence and degradability

AEROBIC: n-Butyl acxrylate reached 61.3% of its theoretical BOD in 14 days using an activated sludge inoculum at 30 mg/L in the Japanese MITI test(1). n-Butyl acrylate had a theoretical BOD of 56% and 40% in other biodegradation tests using OECD methods(2).

12.3 Bioaccumulative potential

An estimated BCF of 17 was calculated in fish for n-butyl acrylate(SRC), using a log Kow of 2.36(1) and a regression-derived equation(2). According to a classification scheme(3), this BCF suggests the potential for bioconcentration in aquatic organisms is low(SRC).

12.4 Mobility in soil

Koc values for n-butyl acrylate have been reported as 40 in Washington clay/loam (29% sand, 42% silt, 29% clay, 3.39% organic carbon, pH 6.0), 50 in Canfield loam (45% sand, 42% silt, 13% clay, 4.58% organic carbon, pH 6.1), 97 in Ellsworth loam (35% sand, 40% silt, 25% clay, 1.42% organic carbon, pH 7.2), 148 in Tyner loamy sand (79% sand, 14% silt, 7% clay, 0.46% organic carbon, pH 5.2), and 107 in sandy loam sediment (53% sand, 28% silt, 19% clay, 1.23% organic carbon, pH 7.5)(1). According to a classification scheme(2), these Koc values suggest that n-butyl acrylate is expected to have high to very high mobility in soil.

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: UN2348 IMDG: UN2348 IATA: UN2348

14.2 UN Proper Shipping Name


14.3 Transport hazard class(es)


14.4 Packing group, if applicable


14.5 Environmental hazards

ADR/RID: no IMDG: no IATA: no

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
Butyl acrylate Butyl acrylate 141-32-2 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 10, 2017
Revision Date Aug 10, 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: 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.
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Name: Butyl acrylate 99+% stabilized with 20 ppm MEHQ Material Safety Data Sheet
Synonym: 2-Propenoic acid, butyl ester; Butyl 2-propenoate
CAS: 141-32-2
Section 1 - Chemical Product   MSDS Name:Butyl acrylate 99+% stabilized with 20 ppm MEHQ Material Safety Data Sheet
Synonym:2-Propenoic acid, butyl ester; Butyl 2-propenoate

CAS# Chemical Name content EINECS#
141-32-2 Butyl acrylate >99 205-480-7
Hazard Symbols: XI
Risk Phrases: 10 36/37/38 43

Flammable. Irritating to eyes, respiratory system and skin. May cause sensitization by skin contact.Light sensitive.
Potential Health Effects
Causes eye irritation.
Causes skin irritation. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.
May be harmful if absorbed through the skin.
Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed.
Causes respiratory tract irritation. May cause central nervous system effects such as nausea and headache.
No information found.

  Eyes: In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Get medical aid.
In case of contact, immediately flush skin with soap and plenty of water. Remove contaminated clothing and shoes. Get medical aid if symptoms occur. Wash clothing before reuse.
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.
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.

  General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. 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. Water may be ineffective.
Material is lighter than water and a fire may be spread by the use of water. Flammable liquid and vapor. May polymerize explosively when involved in a fire. Vapors are heavier than air and may travel to a source of ignition and flash back. Vapors can spread along the ground and collect in low or confined areas.
Extinguishing Media:
For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Water may be ineffective. Do NOT use straight streams of water.

  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. Use water spray to disperse the gas/vapor. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation.

Section 7 - HANDLING and STORAGE
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. Wash clothing before reuse. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. Use only with adequate ventilation. Keep away from heat, sparks and flame. Avoid breathing vapor or mist. Pure vapor will be uninhibited and may polymerize in vents or other confined spaces.
Keep away from sources of ignition. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area. Do not store under inert atmosphere.

  Engineering Controls:
Use explosion-proof ventilation equipment. Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits.
Exposure Limits CAS# 141-32-2: United Kingdom, WEL - TWA: 1 ppm TWA; 5 mg/m3 TWA United Kingdom, WEL - STEL: 5 ppm STEL; 26 mg/m3 STEL Belgium - TWA: 2 ppm VLE; 11 mg/m3 VLE Belgium - STEL: 10 ppm VLE; 53 mg/m3 VLE France - VME: 10 ppm VME; 55 mg/m3 VME Germany: 2 ppm TWA; 11 mg/m3 TWA Malaysia: 2 ppm TWA; 10.48 mg/m3 TWA Netherlands: 2 ppm MAC; 11 mg/m3 MAC Russia: 10 mg/m3 TWA Spain: 2 ppm VLA-ED; 11 mg/m3 VLA-ED Spain: 10 ppm VLA-EC; 53 mg/m3 VLA-EC CAS# 150-76-5: Belgium - TWA: 5 mg/m3 VLE France - VME: 5 mg/m3 VME Germany: 5 mg/m3 TWA Malaysia: 5 mg/m3 TWA Netherlands: 5 mg/m3 MAC Spain: 5 mg/m3 VLA-ED Personal Protective Equipment Eyes: Wear chemical splash goggles and face shield.
Wear appropriate gloves to prevent skin exposure.
Wear appropriate 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: fruity odor - strong odor
pH: Not available.
Vapor Pressure: 5.45 mm Hg @ 25 deg C
Viscosity: Not available.
Boiling Point: 145 deg C
Freezing/Melting Point: -64 deg C
Autoignition Temperature: 279 deg C ( 534.20 deg F)
Flash Point: 39 deg C ( 102.20 deg F)
Explosion Limits, lower: 1.3%
Explosion Limits, upper: 9.9%
Decomposition Temperature:
Solubility in water: Insoluble.
Specific Gravity/Density: .8900g/cm3
Molecular Formula: C7H12O2
Molecular Weight: 128.17

  Chemical Stability:
Stable. However, it may undergo explosive polymerization if uninhibited. May polymerize on exposure to light. Polymerization may occur upon heating. Stable only if stored and handled under recommended conditions. The stability of the product depends upon the availability of both dissolved oxygen and MEHQ inhibitor(CAS=150-76-5). The presence of oxygen is necessary for the MEHQ to function effectively. The product should never be stored under an inert gas atmosphere, but should always be stored under an atmosphere containing 5-21% oxygen by volume. This material is a monomer and may polymerize under certain conditions if the stabilizer is lost.
Conditions to Avoid:
Light, ignition sources, moisture, excess heat, loss of inhibitor.
Incompatibilities with Other Materials:
Strong oxidizing agents, catalytic metals, organotin catalysts, strong acids, amines, peroxides, strong bases, halogens.
Hazardous Decomposition Products:
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
Hazardous Polymerization: May occur.

CAS# 141-32-2: UD3150000 CAS# 150-76-5: SL7700000 LD50/LC50:
CAS# 141-32-2: Draize test, rabbit, eye: 50 mg Mild; Draize test, rabbit, eye: 500 mg/24H Mild; Inhalation, mouse: LC50 = 7800 mg/m3/2H; Inhalation, rat: LC50 = 2730 ppm/4H; Oral, mouse: LD50 = 5880 mg/kg; Oral, rat: LD50 = 900 mg/kg; Skin, rabbit: LD50 = 2 mL/kg.
CAS# 150-76-5: Draize test, rabbit, skin: 6 gm/12D (Intermittent) Mild; Draize test, rabbit, skin: 10%; Oral, rat: LD50 = 1600 mg/kg.
Butyl acrylate - Not listed by ACGIH, IARC, or NTP.
Hydroquinone monomethyl ether - Not listed by ACGIH, IARC, or NTP.
See actual entry in RTECS for complete information.

Fish: Goldfish: LC50 = 5.0 mg/L; 72 Hr.; UnspecifiedWater flea Daphnia: EC50 = 4230 mg/L; 24 Hr.; UnspecifiedBacteria: Phytobacterium phosphoreum: EC50 = 30.8-37.0 mg/L; 5,15,30 minutes; Microtox test, 15 degrees C

  Dispose of in a manner consistent with federal, state, and local regulations.

Hazard Class: 3
UN Number: 2348
Packing Group: III
Hazard Class: 3.3
UN Number: 2348
Packing Group: III
Hazard Class: 3
UN Number: 2348
Packing group: III

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: XI
Risk Phrases:
R 10 Flammable.
R 36/37/38 Irritating to eyes, respiratory system
and skin.
R 43 May cause sensitization by skin contact.
Safety Phrases:
S 9 Keep container in a well-ventilated place.
WGK (Water Danger/Protection)
CAS# 141-32-2: 1
CAS# 150-76-5: 1
CAS# 141-32-2 is listed on Canada's DSL List.
CAS# 150-76-5 is listed on Canada's DSL List.
CAS# 141-32-2 is listed on Canada's Ingredient Disclosure List.
CAS# 150-76-5 is listed on Canada's Ingredient Disclosure List.
CAS# 141-32-2 is listed on the TSCA inventory.
CAS# 150-76-5 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,200 M,liquid
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Type of Test
Open irritation test
Exposure Route
Administration onto the skin
Species Observed
Rodent - rabbit
10 mg/24H
Toxic Effects
AMA Archives of Industrial Hygiene and Occupational Medicine. (Chicago, IL) V.2-10, 1950-54. For publisher information, see AEHLAU. Volume(issue)/page/year: 4,119,1951
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Type of Test
LD50 - Lethal dose, 50 percent kill
Exposure Route
Species Observed
Rodent - rat
900 mg/kg
Toxic Effects
Details of toxic effects not reported other than lethal dose value--
Toxicometric Parameters of Industrial Toxic Chemicals Under Single Exposure, Izmerov, N.F., et al., Moscow, Centre of International Projects, GKNT, 1982 Volume(issue)/page/year: -,28,1982
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Type of Test
LC50 - Lethal concentration, 50 percent kill
Exposure Route
Species Observed
Rodent - rat
2730 ppm/4H
Toxic Effects
Sense Organs and Special Senses (Olfaction)--effect, not otherwise specified<br>Sense Organs and Special Senses (Eye)--effect, not otherwise specified<br>Lungs, Thorax, or Respiration--dyspnea
Journal of Toxicology and Environmental Health. (Hemisphere Pub., 1025 Vermont Ave., NW, Washington, DC 20005) V.1- 1975/76- Volume(issue)/page/year: 16,811,1985

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