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    Methyl acetate
    CAS No.: 79-20-9 Formula: C3H6O2 Molecular Weight: 74.07850
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    Methyl acetate

    CAS No.: 79-20-9 Formula: C3H6O2 Molecular Weight: 74.07850
    Suppliers: All (82) China Suppliers (82) Price Available (16) Contractor (10)

    Description

    Methyl acetate, also known as MeOAc, acetic acid methyl ester or methyl ethanoate, is a carboxylate ester with the formula CH3COOCH3. It is a flammable liquid with a characteristically pleasant smell reminiscent of some glues and nail polish removers. Methyl acetate is occasionally used as a solvent, being weakly polar and lipophilic, but its close relative ethyl acetate is a more common solvent being less toxic and less soluble in water. Methyl acetate has a solubility of 25% in water at room temperature. At elevated temperature its solubility in water is much higher. Methyl acetate is not stable in the presence of strong aqueous bases or aqueous acids. Methyl acetate is not considered as a VOC.

    Basic Info

    Chemical Name Methyl acetate
    Synonyms

    Devoton; Acetic acid, methyl ester; Methyl acetic ester; Methylacetat; Methyl ethanoate; Methyl acetate; 1-yl-acetic acid, methyl ester; Methylacetaat; Tereton; Expand

    CAS No. 79-20-9
    Molecular Formula C3H6O2
    Molecular Weight 74.07850
    PSA 26.30000
    LogP 0.17930

    Numbering system

    UNII W684QT396F

    Properties

    Appearance & Physical State Clear liquid
    Density 0.932
    Boiling Point 57.4oC
    Melting Point -98oC
    Flash Point -10oC
    Refractive Index 1.36-1.362
    Water Solubility 250 g/L (20 oC)
    Stability Stable. Extremely flammable - readily forms explosive mixtures with air. Note low flash point and wide explosion limits. Incompatible with strong oxidizing agents, strong bases, strong acids, nitrates. May be moisture sensitive.
    Storage Condition Flammables area
    Vapor Density 2.55 (vs air)
    Vapor Pressure 165 mm Hg ( 20 °C)

    Safety Info

    RTECS AI9100000
    Hazard Class 3
    Safety Statements S16-S26-S29-S33
    WGK Germany 1
    Packing Group II
    RIDADR UN 1231
    Risk Statements R11; R36; R66; R67
    Hazard Codes F
    Signal Word Danger
    Caution Statement P210; P280; P304 + P340 + P312; P305 + P351 + P338; P337 + P313; P403 + P235
    Symbol GHS02, GHS07
    Supplemental Hazard Statements Repeated exposure may cause skin dryness or cracking.
    Hazard Declaration H225; H319; H336
    SDS 1.0 Expand

    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 Methyl acetate

    1.2 Other means of identification

    Product number -
    Other names Acetic Acid Methyl Ester

    1.3 Recommended use of the chemical and restrictions on use

    Identified uses For industry use only. Food additives -> Flavoring Agents
    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 2

    Eye irritation, Category 2

    Specific target organ toxicity – single exposure, Category 3

    2.2 GHS label elements, including precautionary statements

    Pictogram(s)
    Signal word

    Danger

    Hazard statement(s)

    H225 Highly flammable liquid and vapour

    H319 Causes serious eye irritation

    H336 May cause drowsiness or dizziness

    Precautionary statement(s)
    Prevention

    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.

    Response

    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.

    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.

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

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

    Storage

    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.

    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
    Methyl acetate Methyl acetate 79-20-9 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

    Rinse contaminated clothes (fire hazard) with plenty of water. Remove contaminated clothes. Rinse skin with plenty of water or shower.

    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. Give one or two glasses of water to drink. Refer for medical attention .

    4.2 Most important symptoms/effects, acute and delayed

    (Very similar to those of methyl alcohol, which constitutes 20% of commercial grade.) Inhalation causes headache, fatigue, and drowsiness; high concentrations can produce central nervous system depression and optic nerve damage. Liquid irritates eyes and may cause defatting and cracking of skin. Ingestion causes headache, dizziness, drowsiness, fatigue; may cause severe eye damage. (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. /Methyl alcohol and related compounds/

    5.Fire-fighting measures

    5.1 Extinguishing media

    Suitable extinguishing media

    Suitable extinguishing media: Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.

    5.2 Specific hazards arising from the chemical

    Behavior in Fire: Vapor is heavier than air and may 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. Evacuate danger area! Consult an expert! Personal protection: filter respirator for organic gases and vapours of low boiling point adapted to the airborne concentration of the substance. Do NOT wash away into sewer. Collect leaking liquid in sealable containers. Absorb 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

    Remove all ignition sources. Establish forced ventilation to keep levels below explosive limit. Absorb liquids in vermiculite, dry sand, earth, peat, carbon or a similar materail and deposit in sealed containers. Keep this chemical out of a confined space, such as a sewer, because of the possibility of an explosion.

    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, strong acids and strong bases.Store in a flammable liquid storage area or approved cabinet away from ignition sources and corrosive and reactive materials. ... Methyl acetate must be stored to avoid contact with strong oxidizers (such as chlorine, bromine, and fluorine) and strong acids (such as hydrochloric, sulfuric, and nitric), since violent reactions occur. Store in tightly closed containers in a cool, well-ventilated area away from strong alkalis and nitrates. Sources of ignition, such as smoking and open flames, are prohibited where methyl acetate is used, handled or stored in a manner that could create a potential fire or explosion hazard. Use only nonsparking tools and equipment, especially when opening and closing containers of methyl acetate.

    8.Exposure controls/personal protection

    8.1 Control parameters

    Occupational Exposure limit values

    Recommended Exposure Limit: 10 Hour Time-Weighted Average: 200 ppm (610 mg/cu m).

    Recommended Exposure Limit: 15 Minute Short-Term Exposure Limit: 250 ppm (760 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 Methyl acetate is a clear colorless liquid with a fragrant odor. Moderately toxic. Flash point -10°C. Vapors heavier than air.
    Colour Colorless, volatile liquid
    Odour Pleasant odor
    Melting point/ freezing point 19°C(lit.)
    Boiling point or initial boiling point and boiling range 57-58°C(lit.)
    Flammability Class IB Flammable Liquid: Fl.P. below 22.78°C and BP at or above 37.78°C.Highly flammable. Gives off irritating or toxic fumes (or gases) in a fire.
    Lower and upper explosion limit / flammability limit Lower flammable limit: 3.1% by volume; Upper flammable limit: 16% by volume
    Flash point -13°C
    Auto-ignition temperature 502.22°C
    Decomposition temperature no data available
    pH no data available
    Kinematic viscosity 0.364 mPa.s at 25°C
    Solubility greater than or equal to 100 mg/mL at 21.11°C
    Partition coefficient n-octanol/water (log value) log Kow = 0.18
    Vapour pressure 170 mm Hg at 20°C ; 235 mm Hg at 25°C
    Density and/or relative density 0.934g/mLat 25°C
    Relative vapour density 2.55 (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, flame, or oxidizers.The vapour is heavier than air and may travel along the ground; distant ignition possible.METHYL ACETATE presents a fire or explosion hazard when exposed to strong oxidizing agents. Emits irritating fumes and acrid smoke when heated to decomposition, [Lewis, 3rd ed., 1993, p. 826]. Its reactivity is consistent with other compounds of the ester group.

    10.4 Conditions to avoid

    no data available

    10.5 Incompatible materials

    Forms explosive mixture with air. a strong reducing agent. Incompatible with water, acids, nitrates, strong oxidizers, alkalis. Attacks some plastics. Attacks many metals in teh presence of water. Reacts slowly with water, forming acetic acid and methanol.

    10.6 Hazardous decomposition products

    Decomposes in heat; on contact with air, bases, strong oxidizers, UV-light, casuing fire and explosion hazard.

    11.Toxicological information

    Acute toxicity

    • Oral: LD50 Rat oral 6,482 mg/kg
    • Inhalation: LC50 Cat inhalation > 30 mg/L 10hr
    • 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

    no data available

    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: Pimephales promelas (fathead minnows); Concentration: 399 mg/L for 96 hr (confidence limit 378-422 mg/L) /Conditions of bioassay not specified
    • Toxicity to daphnia and other aquatic invertebrates: no data available
    • Toxicity to algae: no data available
    • Toxicity to microorganisms: no data available

    12.2 Persistence and degradability

    AEROBIC: Methyl acetate achieved >70% after 28 days in an OECD 301D Closed bottle test(1). Methyl acetate reached > 95% degradation in a 5 day BOD test(2).

    12.3 Bioaccumulative potential

    An estimated BCF of 3.2 was calculated in fish for methyl acetate(SRC), using a log Kow of 0.18(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

    The Koc of methyl acetate is estimated as 9.1(SRC), using a log Kow of 0.18(1) and a regression-derived equation(2). According to a classification scheme(3), this estimated Koc value suggests that methyl acetate is expected to have very high mobility in soil(SRC).

    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: UN1231 IMDG: UN1231 IATA: UN1231

    14.2 UN Proper Shipping Name

    ADR/RID: METHYL ACETATE
    IMDG: METHYL ACETATE
    IATA: METHYL ACETATE

    14.3 Transport hazard class(es)

    ADR/RID: 3 IMDG: 3 IATA: 3

    14.4 Packing group, if applicable

    ADR/RID: II IMDG: II IATA: II

    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
    Methyl acetate Methyl acetate 79-20-9 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 Expand
    1H NMR : parameter in CDCl3Expand

    NMR Spectrum 1H NMR : parameter in CDCl3

    Collapse

    C3 H6 O2 0.02 ml : 0.5 ml CDCl3
    methyl acetate

    Parameter ppm Hz
    D(A) 2.050

    D(B) 3.662

    IR : liquid filmExpand
    Raman : 4880 A,200 M,liquidExpand
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