Methane material safety data table (Methane MSDS)

Methane is common in both natural and industrial fields. This material safety data table is designed to clarify its characteristics and provide guidance for relevant operations and countermeasures.

I. Chemicals and Corporate Identity
- ** Chemical Chinese Name **: Methane
- ** Chemical English Name **: Methane
- ** Enterprise Emergency Phone **: [Specific Phone Number]

II. Composition/Composition Information
- ** Pure Product/Mixture **: Pure Product
- ** Main Ingredient **: Methane
- ** CAS Number **: 74 - 82 - 8

III. Hazard Overview
- ** Physical Chemical Hazard **: Extremely flammable, Mixing with air can form an explosive mixture. It is dangerous to burn and explode when exposed to heat sources and open flames. Its vapor is heavier than air and can spread to a considerable distance at a lower place. In case of fire, it will catch fire and backfire.
- ** Health Hazards **: Methane is basically non-toxic to humans, but when the concentration is too high, the oxygen content in the air will be significantly reduced, causing asphyxia. When the methane in the air reaches 25% - 30%, it can cause headaches, dizziness, fatigue, inattention, rapid breathing and heartbeat, and ataxia. If not separated in time, can cause asphyxiation death. Skin contact liquefied this product, can cause frostbite.

IV. First aid measures
- ** Inhalation **: Quickly leave the scene to fresh air. Keep the respiratory tract unobstructed. If breathing difficulties, give oxygen. If breathing stops, immediately perform artificial respiration. Seek medical attention.
- ** Skin contact **: If there is frostbite, seek medical treatment. Slowly thaw the frostbitten area with warm water to avoid friction.

V. Fire protection measures
- ** Hazardous characteristics **: Flammable, mixed with air can form explosive mixtures, in case of open fire, high heat can cause combustion and explosion.
- ** Hazardous combustion products **: carbon monoxide, carbon dioxide.
- ** Fire extinguishing method **: Cut off the gas source. If the gas source cannot be cut off, it is not allowed to extinguish the flame at the leak. Spray water to cool the container, and move the container from the fire site to an open place if possible. Extinguishing agent: mist water, foam, carbon dioxide, dry powder.

6. Emergency treatment for leakage
- ** Emergency action **: Quickly evacuate the personnel in the leaked contaminated area to the upwind and isolate them, strictly restricting access. Cut off the fire source. It is recommended that emergency personnel wear self-contained positive pressure breathing apparatus and anti-static overalls. Cut off the source of leakage as much as possible. Reasonable ventilation, accelerate the spread. Spray-like water dilution, dissolution. Build a dike or dig a hole to contain a large amount of wastewater generated. If possible, send the leaked air to an open place with an exhaust fan or install a suitable nozzle to burn it. You can also move the leaked container to an open place and pay attention to ventilation. The leaked container should be properly handled, repaired and inspected before use.

VII. Operation Disposal and Storage
- ** Operational Precautions **: Closed operation, full ventilation. Operators must be specially trained and strictly abide by the operating procedures. Keep away from fire and heat sources, and smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. Prevent gas leakage into the air of the workplace. Avoid contact with oxidants. In the process of transmission, cylinders and containers must be grounded and jumped to prevent static electricity from being generated. Light handling during handling to prevent damage to cylinders and accessories. Equipped with the corresponding variety and quantity of fire equipment and leakage emergency treatment equipment.
- ** Storage precautions **: Store in a cool and ventilated warehouse. Keep away from fire and heat sources. The storage temperature should not exceed 30 ° C. It should be stored separately from oxidants, etc., and mixed storage should not be avoided. Explosion-proof lighting and ventilation facilities are used. It is forbidden to use mechanical equipment and tools that are prone to sparks. The storage area should be equipped with leakage emergency treatment equipment.

VIII. Contact Control/Personal Protection
- ** Occupational Exposure Limits **: China PC - TWA (Time-Weighted Average Admissible Concentration): No standard has been established; PC - STEL (Short-Term Exposure Admissible Concentration): No standard has been established.
- ** Monitoring Method **: Gas Chromatography.
- ** Engineering Control **: The production process is closed and fully ventilated.
- ** Respiratory System Protection **: Generally no special protection is required, but it is recommended to wear a self-priming filter gas mask (half mask) under special circumstances.
- ** Eye Protection **: Generally no special protection is required.
- ** Body Protection **: Wear anti-static work clothes.
- ** Hand Protection **: Wear general work protective gloves.
- ** Other Protection **: Smoking is strictly prohibited at the work site. Avoid repeated contact for a long time. Work in tanks, restricted spaces or other high concentration areas must be supervised.

Nine. Physical and chemical properties
- ** Appearance and characteristics **: Colorless and odorless gas.
- ** pH **: meaningless
- ** Melting point （℃）**： - 182.5
- ** Boiling point （℃）**： - 161.5
- ** Relative density (water = 1) **: 0.42 (- 164 ° C)
- ** Relative vapor density (air = 1) **: 0.55
- ** Saturated vapor pressure (kPa) **: 53.32 (- 168.8 ° C)
- ** Heat of combustion (kJ/mol) **: 889.5
- ** Critical temperature (° C) * *: - 82.6
- ** critical pressure (MPa) **: 4.59
- ** octanol/water partition coefficient **: no data
- ** flash point （℃）**： - 188
- ** ignition temperature (℃) **: 538
- ** explosion upper limit [% (V/V) ] **: 15
- ** explosion lower limit [% (V/V) ] **: 5.3
- ** solubility **: slightly soluble in water, soluble in alcohol, ether.

10, stability and reactivity
- ** stability **: stability
- ** prohibited ingredients **: strong oxidants, fluorine, chlorine, etc.
- ** Conditions to avoid contact **: open flame, hot topic.
- ** Polymerization Hazards **: No polymerization
- ** Decomposition products **: No data

XI. Toxicological data
- ** Acute toxicity **: It belongs to the micro-toxic category. Allows gas to safely diffuse into the atmosphere or use as fuel. There is a simple asphyxia effect, which is caused by anoxia asphyxia at high concentrations. Dizziness, accelerated breathing, and movement disorders occur in 25 to 30% of the air.
- ** Irritant **: No data
- ** Subacute and chronic toxicity **: No data
- ** Mutagenicity **: No data
- ** Teratogenicity **: No data
- ** Carcinogenicity **: No data
12. Ecological data
- ** Ecotoxicity **: No data
- ** Biodegradability **: No data
- ** Non-biodegradability **: No data
- ** Bioaccumulation or bioaccumulation **: No data
- ** Other harmful effects **: This substance may be hazardous to the environment and special attention should be paid to fish and water bodies. Special attention should also be paid to the contamination of surface water, soil, atmosphere and drinking water.

13. Disposal
- ** Nature of waste **: Hazardous waste
- ** Disposal method **: Refer to relevant national and local regulations before disposal. It is recommended to dispose by incineration.
- ** Disposal precautions **: Return the emptied container to the manufacturer or bury it in a specified place.

14. Transportation Information
- ** Dangerous Goods Number **: 21007
- ** UN Number **: 1971
- ** Packaging Mark **: Flammable Gas
- ** Packaging Category **: Class II Packaging
- ** Packaging Method **: Steel Gas Cylinder; Ordinary Wooden Box Outside Ampoule.
- ** Transportation Precautions **: When transporting in a rigid cylinder, the hard hat on the cylinder must be worn. The cylinder is generally placed flat, and the bottle mouth should be facing the same direction, not crossed; the height should not exceed the protective fence plate of the vehicle, and it should be fastened with a triangular wood pad to prevent rolling. During transportation, the transportation vehicle should be equipped with the corresponding variety and quantity of fire-fighting equipment. The exhaust pipe of the vehicle carrying this item must be equipped with a fire-retardant device, and it is forbidden to use mechanical equipment and tools that are prone to generating sparks for loading and unloading. It is strictly forbidden to mix with oxidants and other mixed transportation. In summer, it should be transported in the morning and evening to prevent sun exposure. Stopover should be kept away from fire and heat sources. Road transportation should be carried according to the specified route, and do not stop in residential areas and densely populated areas. It is forbidden to slip during railway transportation.

XV. Regulatory Information
- Regulations on the Safety Management of Dangerous Chemicals (promulgated by the State Council on February 17, 1987), Implementing Regulations on the Safety Management of Dangerous Chemicals (Hua Laofa [1992] No. 677), Regulations on the Safe Use of Chemicals in the Workplace ([1996] Labor Ministry No. 423) and other regulations have made corresponding provisions on the safe use, production, storage, transportation, loading and unloading of chemical dangerous goods; Classification and marking of commonly used hazardous chemicals (GB 13690-92) classifies the substance as a Class 2.1 flammable gas.