Dimethoxymethane SDS
SECTION 1: Identification of the substance/mixture and of the company/undertaking
Product identifier
- Product name： Dimethoxymethane
- CAS： 109-87-5
Relevant identified uses of the substance or mixture and uses advised against
- Relevant identified uses： For R&D use only. Not for medicinal, household or other use.
- Uses advised against： none
Company Identification
- Company：Chemicalbook.in
- Address：5 vasavi Layout Basaveswara Nilayam Pragathi Nagar Hyderabad, India -500090
- Telephone：+91 9550333722
SECTION 2: Hazards identification
Classification of the substance or mixture
Flammable liquids, Category 2
GHS label elements, including precautionary statements
-
Pictogram(s)
- Signal word Danger
H225 Highly flammable liquid and vapour
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/hearing protection/...
P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse affected areas with water [or shower].
P370+P378 In case of fire: Use ... to extinguish.
P403+P235 Store in a well-ventilated place. Keep cool.
P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.
Other hazards which do not result in classification
no data available
SECTION 3: Composition/information on ingredients
Substance
- Chemical name: Dimethoxymethane
- Common names and synonyms: Dimethoxymethane
- CAS number: 109-87-5
- EC number: 203-714-2
- Concentration: 100%
SECTION 4: First aid measures
Description of necessary first-aid measures
Fresh air, rest. Refer for medical attention.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention .
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Rinse mouth. Refer for medical attention .
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)
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.
SECTION 5: Firefighting measures
Suitable extinguishing media
To fight fire: foam, carbon dioxide, dry chemical ...
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)
Special protective actions for fire-fighters
Use water spray, dry powder, carbon dioxide, alcohol-resistant foam. In case of fire: keep drums, etc., cool by spraying with water.
SECTION 6: Accidental release measures
Personal precautions, protective equipment and emergency procedures
Consult an expert! Personal protection: filter respirator for organic vapours of low boiling point adapted to the airborne concentration of the substance. Remove all ignition sources. Cover the spilled material with sand or other non-combustible material. Collect leaking liquid in covered containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.
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.
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.
SECTION 7: Handling and storage
Precautions for safe handling
NO open flames, NO sparks and NO smoking. NO contact with strong oxidizing agents or strong bases. Closed system, ventilation, explosion-proof electrical equipment and lighting. Do NOT use compressed air for filling, discharging, or handling. Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Fireproof. Separated from strong oxidants. Cool. Keep in the dark. Well closed. Store only if stabilized.
SECTION 8: Exposure controls/personal protection
Control parameters
TLV: 1000 ppm as TWA.MAK: 1600 mg/m3, 500 ppm; peak limitation category: II(2); pregnancy risk group: C; (DFG 2018)
no data available
Appropriate engineering controls
Ensure adequate ventilation. Handle in accordance with good industrial hygiene and safety practice. Set up emergency exits and the risk-elimination area.
Individual protection measures, such as personal protective equipment (PPE)
Wear safety spectacles.
Protective gloves.
Use ventilation, local exhaust or breathing protection.
no data available
SECTION 9: Physical and chemical properties and safety characteristics
-
Physical state：
Liquid.
-
Colour：
Colourless.
-
Odour：
CHLOROFORM ODOR
-
Melting point/freezing point：
<= -85.1 °C. Atm. press.:1 atm.
-
Boiling point or initial boiling point and boiling range：
>= 124.34 °C. Atm. press.:Ca. 760 mm Hg.
-
Flammability：
Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
-
Lower and upper explosion limit/flammability limit：
Lower flammable limit: 2.2% by volume; Upper flammable limit: 13.8% by volume
-
Flash point：
42 °C. Atm. press.:1 atm.
-
Auto-ignition temperature：
285 °C. Atm. press.:1 atm.
-
Decomposition temperature：
no data available
-
pH：
no data available
-
Kinematic viscosity：
dynamic viscosity (in mPa s) = 1.72. Temperature:20°C.
-
Solubility：
33 % (NIOSH, 2016)
-
Partition coefficient n-octanol/water：
log Pow = -0.77. Temperature:28 °C.
-
Vapour pressure：
9.5 mm Hg. Temperature:25 °C. Remarks:Equivalent to 12.7 hPa at 25 C.
-
Density and/or relative density：
Ca. 0.97 g/cm3. Temperature:20 °C.
-
Relative vapour density：
2.6 (USCG, 1999) (Relative to Air)
-
Particle characteristics：
no data available
SECTION 10: Stability and reactivity
Reactivity
2200 ppm [Based on 10% of the lower explosion limit for safety considerations even though the relevant toxicological data indicated that irreversible health efects or impairment of escape existed only at higher concentrations.]
The substance can presumably form explosive peroxides. May explode on heating. Reacts vigorously with strong oxidants. This generates fire and explosion hazard.
Chemical stability
Stable under neutral or alkaline conditions ketals
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].
Conditions to avoid
no data available
Incompatible materials
Strong oxidizers, acids.
Hazardous decomposition products
Disaster hazard: dangerous upon exposure to heat or flame ...
SECTION 11: Toxicological information
Acute toxicity
- Oral: LD50 - rat (male) - 2 257 mg/kg bw. Remarks:Results for fasted animals.
- Inhalation: LC0 - rat (male) - > 15.8 mg/L air.
- Dermal: LD50 - rabbit (male) - 3 930 mg/kg bw.
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
The substance is irritating to the eyes and respiratory tract. The substance may cause effects on the central nervous system. Exposure far above the OEL could cause unconsciousness.
STOT-repeated exposure
The substance defats the skin, which may cause dryness or cracking.
Aspiration hazard
A harmful contamination of the air can be reached rather quickly on evaporation of this substance at 20°C.
SECTION 12: Ecological information
Toxicity
- Toxicity to fish: LC50 - Lepomis macrochirus - > 10 000 mg/L - 96 h.
- Toxicity to daphnia and other aquatic invertebrates: EC50 - Daphnia magna - 27 000 mg/L - 48 h.
- Toxicity to algae: EC50 - Pseudokirchneriella subcapitata (previous names: Raphidocelis subcapitata, Selenastrum capricornutum) - 25 500 mg/L - 72 h.
- Toxicity to microorganisms: EC50 - activated sludge of a predominantly domestic sewage - > 1 000 mg/L - 3 h. Remarks:Respiration rate.
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.
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.
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).
Other adverse effects
no data available
SECTION 13: Disposal considerations
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.
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.
SECTION 14: Transport information
UN Number
ADR/RID: UN1234 (For reference only, please check.)
IMDG: UN1234 (For reference only, please check.)
IATA: UN1234 (For reference only, please check.)
UN Proper Shipping Name
ADR/RID: METHYLAL (For reference only, please check.)
IMDG: METHYLAL (For reference only, please check.)
IATA: METHYLAL (For reference only, please check.)
Transport hazard class(es)
ADR/RID: 3 (For reference only, please check.)
IMDG: 3 (For reference only, please check.)
IATA: 3 (For reference only, please check.)
Packing group, if applicable
ADR/RID: II (For reference only, please check.)
IMDG: II (For reference only, please check.)
IATA: II (For reference only, please check.)
Environmental hazards
ADR/RID: No
IMDG: No
IATA: No
Special precautions for user
no data available
Transport in bulk according to IMO instruments
no data available
SECTION 15: Regulatory information
Safety, health and environmental regulations specific for the product in question
SECTION 16: Other information
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/
Other Information
An added stabilizer or inhibitor can influence the toxicological properties of this substance; consult an expert.Check for peroxides prior to distillation; eliminate if found.Methylal is metabolized to methanol and formaldehyde and may exhibit the same toxic reactions as these compounds.See ICSCs 0057 and 0275.