Methane SDS
SECTION 1: Identification of the substance/mixture and of the company/undertaking
Product identifier
- Product name： Methane
- CAS： 74-82-8
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
Gases under pressure: Refrigerated liquefied gas
Flammable gases, Category 1A, Flammable gas
GHS label elements, including precautionary statements
-
Pictogram(s)
- Signal word Danger
H220 Extremely flammable gas
P282 Wear cold insulating gloves and either face shield or eye protection.
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P336+P317 Immediately thaw frosted parts with lukewarm water. Do not rub affected area. Get medical help.
P377 Leaking gas fire: Do not extinguish, unless leak can be stopped safely.
P381 In case of leakage, eliminate all ignition sources.
P403 Store in a well-ventilated place.
none
Other hazards which do not result in classification
no data available
SECTION 3: Composition/information on ingredients
Substance
- Chemical name: Methane
- Common names and synonyms: Methane
- CAS number: 74-82-8
- EC number: 200-812-7
- Concentration: 100%
SECTION 4: First aid measures
Description of necessary first-aid measures
Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. 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 with water. Do not induce vomiting. Never give anything by mouth to an unconscious person. Call a doctor or Poison Control Center immediately.
Most important symptoms/effects, acute and delayed
If concentration of gas is high enough, may cause asphyxiation. No detectable systemic effects, even at 5% concentration in air. (USCG, 1999)
High concentrations may cause asphyxiation. No systemic effects, even at 5% concentration in air. (USCG, 1999)
Excerpt from ERG Guide 115 [Gases - Flammable (Including Refrigerated Liquids)]: Vapors may cause dizziness or asphyxiation without warning. Some may be irritating if inhaled at high concentrations. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. Fire may produce irritating and/or toxic gases. (ERG, 2016)
Excerpt from ERG Guide 115 [Gases - Flammable (Including Refrigerated Liquids)]: Vapors may cause dizziness or asphyxiation without warning. Some may be irritating if inhaled at high concentrations. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. Fire may produce irritating and/or toxic gases. (ERG, 2016)
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 if necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on the 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. Aliphatic hydrocarbons and related compounds
SECTION 5: Firefighting measures
Suitable extinguishing media
Wear self contained breathing apparatus for fire fighting if necessary.
Specific hazards arising from the chemical
Excerpt from ERG Guide 115 [Gases - Flammable (Including Refrigerated Liquids)]: EXTREMELY FLAMMABLE. Will be easily ignited by heat, sparks or flames. Will form explosive mixtures with air. Vapors from liquefied gas are initially heavier than air and spread along ground. CAUTION: Hydrogen (UN1049), Deuterium (UN1957), Hydrogen, refrigerated liquid (UN1966) and Methane (UN1971) are lighter than air and will rise. Hydrogen and Deuterium fires are difficult to detect since they burn with an invisible flame. Use an alternate method of detection (thermal camera, broom handle, etc.) Vapors may travel to source of ignition and flash back. Cylinders exposed to fire may vent and release flammable gas through pressure relief devices. Containers may explode when heated. Ruptured cylinders may rocket. (ERG, 2016)
Special Hazards of Combustion Products: None (USCG, 1999)
Excerpt from ERG Guide 115 [Gases - Flammable (Including Refrigerated Liquids)]: EXTREMELY FLAMMABLE. Will be easily ignited by heat, sparks or flames. Will form explosive mixtures with air. Vapors from liquefied gas are initially heavier than air and spread along ground. CAUTION: Hydrogen (UN1049), Deuterium (UN1957), Hydrogen, refrigerated liquid (UN1966) and Methane (UN1971) are lighter than air and will rise. Hydrogen and Deuterium fires are difficult to detect since they burn with an invisible flame. Use an alternate method of detection (thermal camera, broom handle, etc.) Vapors may travel to source of ignition and flash back. Cylinders exposed to fire may vent and release flammable gas through pressure relief devices. Containers may explode when heated. Ruptured cylinders may rocket. (ERG, 2016)
Excerpt from ERG Guide 115 [Gases - Flammable (Including Refrigerated Liquids)]: EXTREMELY FLAMMABLE. Will be easily ignited by heat, sparks or flames. Will form explosive mixtures with air. Vapors from liquefied gas are initially heavier than air and spread along ground. CAUTION: Hydrogen (UN1049), Deuterium (UN1957), Hydrogen, refrigerated liquid (UN1966) and Methane (UN1971) are lighter than air and will rise. Hydrogen and Deuterium fires are difficult to detect since they burn with an invisible flame. Use an alternate method of detection (thermal camera, broom handle, etc.) Vapors may travel to source of ignition and flash back. Cylinders exposed to fire may vent and release flammable gas through pressure relief devices. Containers may explode when heated. Ruptured cylinders may rocket. (ERG, 2016)
Special protective actions for fire-fighters
Shut off supply; if not possible and no risk to surroundings, let the fire burn itself out. In other cases extinguish with water spray, powder, carbon dioxide. In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position.
SECTION 6: Accidental release measures
Personal precautions, protective equipment and emergency procedures
Evacuate danger area! Personal protection: self-contained breathing apparatus. Consult an expert! Ventilation. Remove all ignition sources. NEVER direct water jet on liquid.
Environmental precautions
Evacuate danger area! Personal protection: self-contained breathing apparatus. Consult an expert! Ventilation. Remove all ignition sources. NEVER direct water jet on liquid.
Methods and materials for containment and cleaning up
Clean up promptly by sweeping or vaccum.
SECTION 7: Handling and storage
Precautions for safe handling
NO open flames, NO sparks and NO smoking. Closed system, ventilation, explosion-proof electrical equipment and lighting. Use non-sparking handtools. 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. Cool. Ventilation along the floor and ceiling.Store in a cool, dry, well-ventilated location. Separate from halogens and oxygen. Outside or detached storage is preferred.
SECTION 8: Exposure controls/personal protection
Control parameters
| Component | Methane | |||
|---|---|---|---|---|
| CAS No. | 74-82-8 | |||
| Limit value - Eight hours | Limit value - Short term | |||
| ppm | mg/m3 | ppm | mg/m3 | |
| Canada - Ontario | (1) | ? | ? | ? |
| Finland | 1000 | ? | ? | ? |
| Remarks | ||||
| Canada - Ontario | (1) see aliphatic hydrocarbon gases | |||
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 goggles.
Cold-insulating gloves.
Use ventilation. Use breathing protection.
no data available
SECTION 9: Physical and chemical properties and safety characteristics
-
Physical state：
Methane is a colorless odorless gas. It is also known as marsh gas or methyl hydride. It is easily ignited. The vapors are lighter than air. Under prolonged exposure to fire or intense heat the containers may rupture violently and rocket. It is used in making other chemicals and as a constituent of the fuel, natural gas.
-
Colour：
Colorless gas
-
Odour：
Odorless
-
Melting point/freezing point：
-296° F (USCG, 1999)
-
Boiling point or initial boiling point and boiling range：
?161°C(lit.)
-
Flammability：
Extremely flammable.
-
Lower and upper explosion limit/flammability limit：
Lower flammable limit: 5.3% by volume; Upper flammable limit: 14.0% by volume.
-
Flash point：
-188°C
-
Auto-ignition temperature：
998°F
-
Decomposition temperature：
no data available
-
pH：
no data available
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Kinematic viscosity：
34.8 uP at -181.6 deg C; 76.0 uP at -78.5 deg C; 102.6 uP at 0 deg C; 108.7 uP at 20 deg C; 133.1 uP at 100.0 deg C; 160.5 uP at 200.5 deg C; 181.3 uP at 284 deg C; 202.6 uP at 380 deg C; 226.4 uP at 499 deg C
-
Solubility：
3.5 mL/100 mL at 63° F (NTP, 1992)
-
Partition coefficient n-octanol/water：
log Kow = 1.09
-
Vapour pressure：
258574 mm Hg at 100° F ; 760 mm Hg at -258.7° F (NTP, 1992)
-
Density and/or relative density：
0.716g/mLat 25°C(lit.)
-
Relative vapour density：
0.55 (vs air)
-
Particle characteristics：
no data available
SECTION 10: Stability and reactivity
Reactivity
no data available
Chemical stability
no data available
Possibility of hazardous reactions
Very dangerous fire and explosion hazard when exposed to heat or flame.The gas is lighter than air.Contact of very cold liquefied gas with water may result in vigorous or violent boiling of the product and extremely rapid vaporization due to the large temperature differences involved. If the water is hot, there is the possibility that a liquid "superheat" explosion may occur. Pressures may build to dangerous levels if liquid gas contacts water in a closed container [Handling Chemicals Safely 1980].
Conditions to avoid
no data available
Incompatible materials
Reacts with chlorine and bromine in light (explosively in direct sunlight)
Hazardous decomposition products
Hazardous decomposition products formed under fire conditions. -Carbon oxides.
SECTION 11: Toxicological information
Acute toxicity
- Oral: no data available
- Inhalation: no data available
- 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
Rapid evaporation of the liquid may cause frostbite.
STOT-repeated exposure
no data available
Aspiration hazard
On loss of containment this substance can cause suffocation by lowering the oxygen content of the air in confined areas.
SECTION 12: Ecological information
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
Persistence and degradability
ANAEROBIC: Utilization of methane by soil microorganisms has been detected using five enriched soil samples collected from sites near Adelaide, South Australia; an average methane utilization of 55% was observed over 69 days. Methane utilization, expressed as % of control were as follows (value (soil type): 10 (litchfield podzolic, pH 5.9, 14% clay, 2.3% organic carbon, 17% moisture); 73 (pond mud, pH 7.9, 49% clay, 2.5% organic carbon, 126% moisture3); 55 (red brown earth, pH 7.7, 16% clay, 2.4% organic carbon, 8% moisture); 61 (Grey clay, pH 8.0, 36% clay, 3.1% organic carbon, 41% moisture); 75 (siliceous sands, pH 5.1, 5% clay, 2.4% organic carbon, 19% moisture)(1). The half-life of methane was estimated to range from 70 days to infinity based on gas exchange biodegradation experiments conducted in model estuarine ecosystems; inoculum sediments were obtained from Narragansett Bay, RI(2).
Bioaccumulative potential
An estimated BCF of 2 was calculated in fish for methane(SRC), using a log Kow of 1.09(1) and a regression-derived equation(1). According to a classification scheme(2), this BCF suggests the potential for bioconcentration in aquatic organisms is low(SRC).
Mobility in soil
The Koc of methane is estimated as 9(SRC), using a log Kow of 1.09(1) and a regression-derived equation(2). According to a classification scheme(3), this estimated Koc value suggests that methane is expected to have very high mobility in soil. Methane's vapor pressure of 4.7X10+5 mm Hg(4) suggests that this compound will permeate through soil(SRC).
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: UN1971 (For reference only, please check.)
IMDG: UN1971 (For reference only, please check.)
IATA: UN1971 (For reference only, please check.)
UN Proper Shipping Name
ADR/RID: METHANE, COMPRESSED or NATURAL GAS, COMPRESSED with high methane content (For reference only, please check.)
IMDG: METHANE, COMPRESSED or NATURAL GAS, COMPRESSED with high methane content (For reference only, please check.)
IATA: METHANE, COMPRESSED or NATURAL GAS, COMPRESSED with high methane content (For reference only, please check.)
Transport hazard class(es)
ADR/RID: 2.1 (For reference only, please check.)
IMDG: 2.1 (For reference only, please check.)
IATA: 2.1 (For reference only, please check.)
Packing group, if applicable
ADR/RID: (For reference only, please check.)
IMDG: (For reference only, please check.)
IATA: (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
Density of the liquid at boiling point: 0.42 kg/l.High concentrations in the air cause a deficiency of oxygen with the risk of unconsciousness or death.Check oxygen content before entering area.Turn leaking cylinder with the leak up to prevent escape of gas in liquid state.After use for welding, turn valve off; regularly check tubing, etc., and test for leaks with soap and water.The measures mentioned in section PREVENTION are applicable to production, filling of cylinders, and storage of the gas.Other UN number: 1972 (refridgerated liquid), Hazard class: 2.1.