High purity 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.How can i get to your factory?
A:Our factory is near shanghai Airport, we can pick you up in the airport.
2.If i will need to stay in your place for few days, is that possible to book the hotel for me?
A：It’s always my pleasure, hotel booking service is available.
3.About the after-sale service, how can you solve the problems occurred of your overseas customer in time?
A：The warranty of our machine is normally 12 months, during this period, we will arrange the international express immediately, to make sure the replace parts to be delivered as soon as possible.
4.What’s the delivery time?
A: If the cylinder is in the stock, and only need to fill gas, the delivery is about 7-10 days ex work after receive the deposit.
If the cylinder need to customize, the delivery is about 15-35 days ex work after receive the deposit. That is depends on the quantity.
5.How to check the gas quality?
A: Firstly, our cylinder will take a treatment (cleaning, drying, vacuum pumping, and replacement before filling gas. In this way, the cylinder inside is clear and dry. Secondly, we will take tests every treated cylinder to assure them inside purity. Thirdly, we will take a test for all of the gas after fill into cylinders. If the tested gas is not up to standard, we will produce it again and not release the faulty product to ex work. At last, we will supply you the gas test qualified report .
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.