Parameter

PropertyValue
Appearance and propertiesColorless, odorless, and inert gas at room temperature
PH valueMeaningless
Melting point (℃)-272.1
Boiling point (℃)-268.9
Relative density (water = 1)No data available
Relative vapor density (air = 1)0.15
Saturated vapor pressure (KPa)No data available
Octanol/water partition coefficientNo data available
Flash point (°C)Meaningless
Ignition temperature (°C)Meaningless
Spontaneous combustion temperature (°C)Meaningless
Upper explosion limit % (V/V)Meaningless
Lower explosion limit % (V/V)Meaningless
Decomposition temperature (°C)Meaningless
FlammabilityNon-combustible
SolubilitySlightly soluble in water

Safety Instructions

Emergency overview: No gas, the cylinder container is easy to overpressure under heat, there is a risk of explosion.
GHS Hazard Category: According to the Chemical Classification, Warning Label and Warning Specification series, this product is a gas under pressure – compressed gas.
Warning word: Warning
Danger information: Gas under pressure, if heated can explode.
Precautions:
Precautions: Keep away from heat sources, open flames, and hot surfaces. No smoking in the workplace.
Accident response: cut off the leakage source, reasonable ventilation, accelerate diffusion.
Safe storage: Avoid sunlight, store in a well-ventilated place Waste disposal: This product or its container shall be disposed of in accordance with local regulations
Physical and chemical hazards: compressed non-flammable gas, the cylinder container is easy to overpressure when heated, and there is a risk of explosion. High concentration inhalation can cause suffocation. Exposure to liquid helium can cause frostbite.
Health hazard: This product is an inert gas, high concentrations can reduce partial pressure and have a choking hazard. When the concentration of helium in the air increases, the patient first develops rapid breathing, inattention, and ataxia, followed by fatigue, irritability, nausea, vomiting, coma, convulsions, and death.