A

Arsine

IUPAC: arsane

AsH3 Inorganic Compounds CAS 7784-42-1
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Quick Reference
Formula / NotationAsH3
CAS Number7784-42-1
Molecular Weight77.946
Melting Point-179 °F (EPA, 1998)
Boiling Point-80.4 °F at 760 mmHg (EPA, 1998)
Density1.689 at 185 °F (EPA, 1998) - Denser than water; will sink
Solubility20 cc/100 cc (NTP, 1992)
AppearanceArsine appears as a chemical warfare blood agent. It is a colorless gas with a disagreeable garlic odor. Flammable. Heavier than air. Flame easily flashes back to the source of leak. Extremely toxi...
Also Known Asarsane; Arsenic trihydride; Arsenwasserstoff; AsH3; Arsenous hydride; Arsenic hydrid; trihydridoarsenic; 7784-42-1; CHEBI:47217; RefChem:560078
CategoryInorganic Compounds

What is Arsine?

Arsane is an arsine, a member of arsanes and a mononuclear parent hydride. It is a conjugate base of an arsonium. It is a conjugate acid of an arsanide.

Formula & Notation

AsH3

IUPAC Name: arsane

Other Names / Synonyms: arsane; Arsenic trihydride; Arsenwasserstoff; AsH3; Arsenous hydride; Arsenic hydrid; trihydridoarsenic; 7784-42-1; CHEBI:47217; RefChem:560078

Properties & Characteristics

Appearance: Arsine appears as a chemical warfare blood agent. It is a colorless gas with a disagreeable garlic odor. Flammable. Heavier than air. Flame easily flashes back to the source of leak. Extremely toxi.... Molecular formula: AsH3. Molecular weight: 77.946 g/mol. Boiling point: -80.4 °F at 760 mmHg (EPA, 1998). Melting point: -179 °F (EPA, 1998). Density: 1.689 at 185 °F (EPA, 1998) - Denser than water; will sink. Solubility: 20 cc/100 cc (NTP, 1992). Vapor pressure: greater than 1 atm (EPA, 1998).

Physical Data

PropertyValue
Melting Point-179 °F (EPA, 1998)
Boiling Point-80.4 °F at 760 mmHg (EPA, 1998)
Density1.689 at 185 °F (EPA, 1998) - Denser than water; will sink
Molecular Weight77.946
Solubility20 cc/100 cc (NTP, 1992)
AppearanceArsine appears as a chemical warfare blood agent. It is a colorless gas with a disagreeable garlic odor. Flammable. Heavier than air. Flame easily flashes back to the source of leak. Extremely toxi...

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 Arsine
Formula AsH3
CAS Number 7784-42-1
Molecular Weight 77.946
Synonyms arsane; Arsenic trihydride; Arsenwasserstoff; AsH3; Arsenous hydride; Arsenic hydrid; trihydridoarsenic; 7784-42-1; CHEBI:47217; RefChem:560078

Frequently Asked Questions

Arsane is an arsine, a member of arsanes and a mononuclear parent hydride. It is a conjugate base of an arsonium. It is a conjugate acid of an arsanide.

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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.