Liquid hydrogen description
Hydrogen is a chemical element with symbol H and atomic number 1. With a standard atomic weight of circa 1.008, hydrogen is the lightest element on the periodic table. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. Non-remnant stars are mainly composed of hydrogen in the plasma state. The most commonisotope of hydrogen, termed protium (name rarely used, symbol 1H), has one proton and no neutrons.
Physical and Chemical Properties
Appearance : Compressed gas. Colorless gas.
Odor : None.
Odor : Mixture contains one or more component(s) which have the following odor: No Hydrogen odor warning properties.
Odor threshold : No data available.
pH : Not applicable.
Melting point/range : -435 °F (-259.2 °C)
Boiling point/range : -423 °F (-252.9 °C)
Flash point : Not applicable.
Evaporation rate : Not applicable.
Upper/lower explosion/flammability limit : 75 %(V) / 4 %(V)
Vapor pressure : Not applicable.
Water solubility : 0.0016 g/l
Relative vapor density : 0.07 (air = 1)
Relative density : 0.07 (water = 1)
Partition coefficient (noctanol/water) : Not applicable.
Auto-ignition temperature : 560 °C
Decomposition temperature : No data available.
Viscosity : Not applicable.
Molecular Weight : 2.02 g/mol
Density : 0.006 lb/ft3 (0.0001 g/cm3) at 70 °F (21 °C) Note: (as vapor)
Specific Volume : 191.97 ft3/lb (11.9830 m3/kg) at 70 °F (21 °C)
Hazards & Transportation
H220:Extremely flammable gas.
H280:Contains gas under pressure; may explode if heated. May displace oxygen and cause rapid suffocation. May form explosive mixtures in air. Burns with invisible flame.
Extremely flammable gas. Contains gas under pressure; may explode if heated.
Burns with an invisible flame.
Can ignite on contact with air.
High pressure gas.
Can cause rapid suffocation.
May form explosive mixtures in air.
Immediate fire and explosion hazard exists when mixed with air at concentrations exceeding the lower flammability limit (LFL).
High concentrations that can cause rapid suffocation are within the flammable range and should not be entered.
Avoid breathing gas.
Carbon Monoxide (CO)
Carbon Dioxide (CO2)
Total Hydrocarbon as Methane (THC)
1. Are you a manufacturer, trading company or a third party?
A：We are a manufacturer, and we have builded up our company since 1995.
2. Where is your factory located?
A：Our factory address is 282 Xilu Road, Outang Shengfeng Industrial Park, Huishan District, Wuxi, Jiangsu, China (Mainland).
3. May i know which payment will be accepted by your company?
A：So far 100%T/T before shipment, and 30% deposit paid by T/T, balance paid by L/C are available.
4. Is your price competitive?
A: Only good quality gas we supply. Surely we will give you best factory price based on superior product and service.
5. All the cylinders can recycle?
A: Usually seamless steel cylinder can recycle to use in 20 years. The disposable cylinder is only for use one time.
6. Shall we send back the cylinders to China to refill gas again?
A: Yes, when you ordered our cylinders, next time, you can send back the cylinders to fill gas again. You just need to tell us before you export. We will handle all the import customs clearance formalities.
If you are looking for hydrogen gas, Yuantong H2 will be your best choice, we will provide you with the best quality products and services. Sincerely welcome you to buy our products.