H
AllChemicals — The Online Chemical Glossary | https://allchemicals.info/chemical/hydrogen-sulfide
Quick Reference
| Formula / Notation | H2S |
|---|---|
| CAS Number | 7783-06-4 |
| Molecular Weight | 34.08 |
| Melting Point | -121.9 °F (EPA, 1998) |
| Boiling Point | -76.59 °F at 760 mmHg (EPA, 1998) |
| Density | 0.916 at -76 °F (EPA, 1998) - Less dense than water; will float |
| Solubility | 0.4 % (NIOSH, 2024) |
| Appearance | Hydrogen sulfide appears as a colorless gas having a strong odor of rotten eggs. Boiling point -60.2 °C. Shipped as a liquid confined under its own vapor pressure. Density (liquid) 8.3 lb / gal. C... |
| Also Known As | sulfane; Hydrosulfuric acid; Dihydrogen sulfide; Dihydrogen monosulfide; Stink DAMP; Sulfur hydride; Hydrogen sulphide; Sulfureted hydrogen; 7783-06-4; Sewer gas |
| Category | Inorganic Compounds |
What is Hydrogen sulfide?
Sulfur atom is a nonmetal atom and a chalcogen. It has a role as a macronutrient.
Formula & Notation
H2S
IUPAC Name: sulfane
Other Names / Synonyms: sulfane; Hydrosulfuric acid; Dihydrogen sulfide; Dihydrogen monosulfide; Stink DAMP; Sulfur hydride; Hydrogen sulphide; Sulfureted hydrogen; 7783-06-4; Sewer gas
Properties & Characteristics
Appearance: Hydrogen sulfide appears as a colorless gas having a strong odor of rotten eggs. Boiling point -60.2 °C. Shipped as a liquid confined under its own vapor pressure. Density (liquid) 8.3 lb / gal. C.... Molecular formula: H2S. Molecular weight: 34.08 g/mol. Boiling point: -76.59 °F at 760 mmHg (EPA, 1998). Melting point: -121.9 °F (EPA, 1998). Density: 0.916 at -76 °F (EPA, 1998) - Less dense than water; will float. Solubility: 0.4 % (NIOSH, 2024). Vapor pressure: 15200 mmHg at 77.9 °F (EPA, 1998). LogP: 0.5.
Physical Data
| Property | Value |
|---|---|
| Melting Point | -121.9 °F (EPA, 1998) |
| Boiling Point | -76.59 °F at 760 mmHg (EPA, 1998) |
| Density | 0.916 at -76 °F (EPA, 1998) - Less dense than water; will float |
| Molecular Weight | 34.08 |
| Solubility | 0.4 % (NIOSH, 2024) |
| Appearance | Hydrogen sulfide appears as a colorless gas having a strong odor of rotten eggs. Boiling point -60.2 °C. Shipped as a liquid confined under its own vapor pressure. Density (liquid) 8.3 lb / gal. C... |
Uses & Applications
Used in industrial processes, materials science, semiconductor manufacture, ceramics, or as a catalyst.
Safety Information
May be corrosive, toxic, or an oxidising agent. Handle in well-ventilated area. Consult SDS before use.
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Term
Hydrogen sulfide
Formula
H2S
CAS Number
7783-06-4
Molecular Weight
34.08
Category
Inorganic Compounds
Index
All "H" terms
Synonyms
sulfane; Hydrosulfuric acid; Dihydrogen sulfide; Dihydrogen monosulfide; Stink DAMP; Sulfur hydride; Hydrogen sulphide; Sulfureted hydrogen; 7783-06-4; Sewer gas
Frequently Asked Questions
Sulfur atom is a nonmetal atom and a chalcogen. It has a role as a macronutrient.
Used in industrial processes, materials science, semiconductor manufacture, ceramics, or as a catalyst.
May be corrosive, toxic, or an oxidising agent. Handle in well-ventilated area. Consult SDS before use.
The formula or notation for Hydrogen sulfide is: H2S
More "H" Terms
1-Hexanol
C6H14O
2-Hydroxyethyl methacrylate
C6H10O3
4-Hydroxybenzaldehyde
C7H6O2
Haber Process
N₂ + 3H₂ ⇌ 2NH₃ | ΔH = −92 kJ/mol
Hafnium
Hf
Half Cell
Half Life
Half-Cell
E = E° − (RT/nF)lnQ
Half-Life
A(t) = A₀e^(−λt); t½ = ln2/λ
Half-Reaction
Halide
X⁻ (e.g., F⁻, Cl⁻, Br⁻, I⁻)
Halogen
F₂, Cl₂, Br₂, I₂, At; Group 17; ns²np⁵ valence configuration
View all "H" terms →
Editorial standards: Chemical data is sourced from peer-reviewed literature,
CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA,
and IAEA. For educational purposes only — always consult official SDS documentation and qualified
professionals before handling chemicals.