Parameter

PropertyValue
Appearance and propertiesColorless, odorless gas
PH valueMeaningless
Melting point (℃)-259.18
Boiling point (℃)-252.8
Relative density (water = 1)0.070
Relative vapor density (air = 1)0.08988
Saturated vapor pressure (kPa)1013
Heat of combustion (kJ/mol)No data available
Critical pressure (MPa)1.315
Critical temperature (℃)-239.97
Octanol/water partition coefficientNo data
Flash point (°C)Meaningless
Explosion limit %74.2
Lower explosive limit %4.1
Ignition temperature (℃)400
Decomposition temperature (℃)Meaningless
SolubilityInsoluble in water, ethanol, ether
FlammabilityFlammable
Natural temperature (℃)Meaningless

Safety Instructions

Emergency Overview: Highly flammable gas. In case of air can form explosive mixture, in case of open fire, high heat burning explosion risk.
GHS Hazard Class: According to the chemical Classification, Warning Label and Warning Specification series standards, the product belongs to flammable gases: Class 1; Gas under pressure: compressed gas.
Warning word: Danger
Hazard information: Extremely flammable. Extremely flammable gas, containing high pressure gas, may explode in case of heat.
Precautionary statement
Preventive measures: Keep away from heat sources, sparks, open flames, hot surfaces, and no smoking in the workplace. Wear anti-static electrical clothing and use fireproof flower tools during use.
Accident response: If the leaking gas catches fire, do not extinguish the fire unless the leaking source can be cut off safely. If there is no danger, eliminate all sources of ignition.
Safe storage: Avoid sunlight and store in a well-ventilated place. Do not store with oxygen, compressed air, halogens (fluorine, chlorine, bromine), oxidants, etc
Disposal: This product or its container shall be disposed of in accordance with local regulations.
Main physical and chemical risk: lighter than air, high concentrations can easily lead to ventricular breathing. Compressed gas, extremely flammable, impure gas will explode when ignited. The cylinder container is prone to overpressure when heated, and there is a risk of explosion. Safety helmets and shock-proof rubber rings should be added to the cylinders during transportation.
Health hazard: Deep exposure can cause hypoxia and asphyxia.
Environmental hazards: Meaningless