Hydrogen
Hydrogen
- CAS:
- 1333-74-0
- MF:
- H2
- MW:
- 2.02
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Properties
- Melting point:
- −259.2 °C(lit.)
- Boiling point:
- −252.8 °C(lit.)
- Density
- 0.0899
- vapor density
- 0.07 (21 °C, vs air)
- vapor pressure
- Critical temperature is - 239.9 °C; noncondensible above this temperature
- Flash point:
- <-150°C
- solubility
- slightly soluble in H2O
- pka
- 35(at 25℃)
- form
- colorless gas
- color
- colorless gas; flammable
- Odor
- Odorless gas
- explosive limit
- 74.2%
- Water Solubility
- 0.00017 g/100 mL
- Merck
- 13,4813
- Dielectric constant
- 1.0（100℃）
- Stability:
- Stable. Highly flammable. Readily forms explosive mixtures with air. Upper (U.K.) composition limit for use of a nitrogen/hydrogen mixture in the open lab is 5.7% hydrogen.
Safety Information
- Symbol(GHS)
GHS02,GHS04
- Signal word
- Danger
- Hazard statements
- H220-H280
- Precautionary statements
- P210-P377-P381-P410+P403
- Hazard Codes
- F+
- Risk Statements
- 12
- Safety Statements
- 9-16-33
- RIDADR
- UN 1950 2.1
- WGK Germany
- -
- RTECS
- MW8900000
- F
- 4.5-31
- Autoignition Temperature
- 500 to 590 °C
- DOT Classification
- 2.1 (Flammable gas)
- HazardClass
- 2.1
- Toxicity
- TLV-TWA (ACGIH) None established; simple asphyxiant
Use
Hydrogen, a non-metallic element, is a colorless odorless, tasteless gas occurring in water combined with oxygen, and in all organic compounds (for example, hydrocarbons and carbohydrates). It is produced by electrolysis of water and is used in the Haber-Bosch process for producing ammonia - a major raw material for nitrogenous fertilizers. Large quantities of hydrogen are utilized in catalytic hydrogenation of unsaturated vegetable oils to make solid fats and petroleum refining. Large quantities of hydrogen are also used as a propulsion fuel for rockets in conjunction with oxygen or fluorine. Being flammable, it is used with helium for filling balloons and airships.
23 India supplier list of "Hydrogen"
- Product Name:Hydrogen
- Products Intro:Purity: 99% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Manufacturer
- Country/Region: New Delhi,INDIA
- Product Name:Hydrogen
- Products Intro:Purity: 99% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Manufacturer
- Country/Region: Gujarat,INDIA
- Product Name:Hydrogen
- Products Intro:Purity: 99% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Manufacturer
- Country/Region: AndhraPradesh,INDIA
- Product Name:Hydrogen
- Products Intro:Purity: 98% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Manufacturer
- Country/Region: New Delhi,INDIA
- Product Name:Hydrogen
- Products Intro:Purity: 98% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Reagent
- Country/Region: Gujarat,INDIA
- Product Name:Hydrogen
- Products Intro:Purity: 98% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Reagent
- Country/Region: AndhraPradesh,INDIA
- Product Name:Hydrogen
- Products Intro:Purity: 98% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Manufacturer
- Country/Region: Maharashtra,INDIA
- Product Name:Hydrogen
- Products Intro:Purity: 99% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Manufacturer
- Country/Region: Maharashtra,INDIA
- Product Name:Hydrogen
- Products Intro:Purity: 98% | Package: 1 kg,5 kg, 10 kg,25kg
- Company Type: Manufacturer
- Country/Region: Maharashtra,INDIA
- Product Name:Hydrogen
- Products Intro:Purity: 98% | Package: 1 kg,5 kg, 10 kg,25kg and 1 MT
- Company Type: Manufacturer
- Country/Region: Maharashtra,INDIA