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99.999%Hydrogen Sulfide
Product classification: Specialty Gas


CAS No.: 7783-6-4     MF: H2S
EINECS No.: 231-977-3
Package: 40L/50L seamless gas cylinder Cylinder
Certificates: DOT/ISO/GB

Dot Class: 2.3

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Product Details

Hydrogen sulfide is the chemical compound with the formula H2S. It is a colorless gas with the characteristic foul odor of rotten eggs; it is heavier than air, very poisonous, corrosive, flammable, and explosive.

Physical &Chemical Properties

Chemical formula: H2S
Appearance: Colorless gas
Odor: Rotten eggs
Molecular Volume: 34.1
UN No: UN1053
Melting point: −82 °C (−116 °F; 191 K)
Boiling point: −60 °C (−76 °F; 213 K)
Acidity (pKa): 7.0[2][3]
Basicity (pKb):12.9



1. Production of thioorganic compounds:
Several organosulfur compounds are produced using hydrogen sulfide. These include methanethiol, ethanethiol, and thioglycolic acid.
2. Analytical chemistry:

For well over a century, hydrogen sulfide was important in analytical chemistry, in the qualitative inorganic analysis of metal ions.

3. Precursor to metal sulfides: 

As indicated above, many metal ions react with hydrogen sulfide to give the corresponding metal sulfides.
4. Miscellaneous applications: 

Hydrogen sulfide is used to separate deuterium oxide, or heavy water, from normal water via the Girdler sulfide process.

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