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    dimethoxymethane
    CAS No.: 109-87-5 Formula: C3H8O2 Molecular Weight: 76.09440
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    dimethoxymethane

    CAS No.: 109-87-5 Formula: C3H8O2 Molecular Weight: 76.09440
    Suppliers: All (64) China Suppliers (64) Price Available (12) Contractor (12)

    Description

    Dimethoxymethane, also called methylal, is a colorless flammable liquid with a low boiling point, low viscosity and excellent dissolving power. It has a chloroform-like odor and a pungent taste. It is the dimethyl acetal of formaldehyde. Dimethoxymethane is soluble in three parts water and miscible with most common organic solvents.

    Numbering system

    MDL number MFCD00008495
    EINECS number 203-714-2
    RTECS number PA8750000
    PubChem number 24893265
    BRN number 1697025

    Properties

    Appearance & Physical State Colorless transparent liquid
    Density 0.86
    Boiling Point 41-42oC
    Melting Point -105oC
    Flash Point -18oC
    Refractive Index 1.3525-1.3545
    Water Solubility 32.3 g/100 mL (16 oC)
    Stability Stable. Extremely flammable. Readily forms explosive mixtures with air. Note low flash point and wide explosive limits. Incompatible with strong oxidizing agents, strong acids. May form explosive peroxides upon exposure to air.
    Storage Condition 2-8oC
    Vapor Pressure 364.565mmHg at 25°C

    Safety Info

    RTECS PA8750000
    Hazard Class 3
    Safety Statements S16-S26-S37/39
    HS Code 2909199090
    WGK Germany 1
    Packing Group II
    RIDADR UN 1234
    Risk Statements R11; R36/37/38
    Hazard Codes F; Xi
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    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 10, 2017

    Revision Date: Aug 10, 2017

    1.Identification

    1.1 GHS Product identifier

    Product name dimethoxymethane

    1.2 Other means of identification

    Product number -
    Other names dimethoxy methane

    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

    2.2 GHS label elements, including precautionary statements

    Pictogram(s)
    Signal word

    Danger

    Hazard statement(s)

    H225 Highly flammable liquid and vapour

    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.

    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.

    Storage

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

    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
    dimethoxymethane dimethoxymethane 109-87-5 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. Refer for medical attention .

    4.2 Most important symptoms/effects, acute and delayed

    VAPOR: Irritating to eyes, nose and throat. Harmful if inhaled. LIQUID: Irritating to skin and eyes. Harmful if swallowed. (USCG, 1999)

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

    If methylal gets into the eyes, wash eyes immediately with large amounts of water, lifting the lower and upper lids occasionally. If irritation is present after washing, get medical attention. Contact lenses should not be worn when working with this chemical.

    5.Fire-fighting measures

    5.1 Extinguishing media

    Suitable extinguishing media

    TO FIGHT FIRE: FOAM, CARBON DIOXIDE, DRY CHEMICAL ...

    5.2 Specific hazards arising from the chemical

    FLAMMABLE. Irritating gases may be produced when heated. Containers may explode in fire. Flashback along vapor trail may occur. Vapor may explode if ignited in an enclosed area. Irritating formaldehyde gas may be present in smoke. (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

    Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Do NOT wash away into sewer. Personal protection: self-contained breathing apparatus.

    6.3 Methods and materials for containment and cleaning up

    1. REMOVE ALL IGNITION SOURCES. 2. VENTILATE AREA OF SPILL OR LEAK. 3. FOR SMALL QUANTITIES, ABSORB ON PAPER TOWELS. EVAPORATE IN SAFE PLACE (SUCH AS FUME HOOD). ALLOW SUFFICIENT TIME TO COMPLETELY CLEAR HOOD DUCTWORK. BURN PAPER IN SUITABLE LOCATION AWAY FROM COMBUSTIBLE MATERIALS. 3. LARGE QUANTITIES CAN BE COLLECTED, DISSOLVED IN ALC OF GREATER MOLECULAR WT THAN BUTYL ALC, & ATOMIZED IN SUITABLE COMBUSTION CHAMBER. METHYLAL SHOULD NOT BE ALLOWED TO ENTER CONFINED SPACE, SUCH AS 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. Cool. Keep in the dark. Well closed. Store only if stabilized.

    8.Exposure controls/personal protection

    8.1 Control parameters

    Occupational Exposure limit values

    10 hr Time-Weighted avg: 1,000 ppm (3,100 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 Colorless transparent liquid
    Colour COLORLESS, CLEAR LIQUID
    Odour CHLOROFORM ODOR
    Melting point/ freezing point 105°C(lit.)
    Boiling point or initial boiling point and boiling range 42°C
    Flammability Class IB Flammable Liquid: Fl.P. below 22.78°C and BP at or above 37.78°C.Highly flammable.
    Lower and upper explosion limit / flammability limit Lower flammable limit: 2.2% by volume; Upper flammable limit: 13.8% by volume
    Flash point -32°C(lit.)
    Auto-ignition temperature 237.22°C (USCG, 1999)
    Decomposition temperature no data available
    pH no data available
    Kinematic viscosity no data available
    Solubility In water:32.3 g/100 mL (16 oC)
    Partition coefficient n-octanol/water (log value) log Kow= 0.0
    Vapour pressure 364.565mmHg at 25°C
    Density and/or relative density 0.86
    Relative vapour density 2.6 (USCG, 1999) (Relative to Air)
    Particle characteristics no data available

    10.Stability and reactivity

    10.1 Reactivity

    no data available

    10.2 Chemical stability

    STABLE UNDER NEUTRAL OR ALKALINE CONDITIONS /KETALS/

    10.3 Possibility of hazardous reactions

    DANGEROUS, WHEN EXPOSED TO HEAT, FLAME, OXIDIZERSThe vapour is heavier than air and may travel along the ground; distant ignition possible.METHYLAL, an acetal, is incompatible with strong oxidizing agents and acids (NIOSH, 2016). Breaks down to formaldehyde and methanol in acidic solutions. A very dangerous fire hazard when exposed to heat, flame or oxidizing agents. May ignite or explode if heated with oxygen [Lewis].

    10.4 Conditions to avoid

    no data available

    10.5 Incompatible materials

    Strong oxidizers, acids.

    10.6 Hazardous decomposition products

    DISASTER HAZARD: DANGEROUS UPON EXPOSURE TO HEAT OR FLAME ...

    11.Toxicological information

    Acute toxicity

    • Oral: no data available
    • Inhalation: LC50 Mouse inhalation 18,000 ppm/7 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

    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: no data available
    • 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

    A reduction in BOD in 8 hr was obtained in one study in which well acclimated sewage seed was incubated with 333 ppm of methylal(1). However this reduction was small compared with the theoretical oxygen demand and toxicity resulted in an initial increase in BOD.

    12.3 Bioaccumulative potential

    The BCF for methylal, estimated from its octanol/water partition coefficient, 0.00(1), using a recommended regression equation is 0.6(2,SRC). Therefore, methylal should not bioconcentrate in fish and aquatic organisms.

    12.4 Mobility in soil

    The Koc for methylal estimated from its water solubility, 2.44X10+5 ppm(1), by a recommended regression equation is 5(2). Therefore methylal would be very mobile in soil(3).

    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: UN1234 IMDG: UN1234 IATA: UN1234

    14.2 UN Proper Shipping Name

    ADR/RID: METHYLAL
    IMDG: METHYLAL
    IATA: METHYLAL

    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
    dimethoxymethane dimethoxymethane 109-87-5 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%

    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 H8 O2 0.04 ml : 0.5 ml CDCl3
    formaldehyde dimethyl acetal

    Parameter ppm Hz
    D(A) 4.572

    D(B) 3.359

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

    GC Analysis

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