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Periodic Table/Compounds/Phosphine

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© Melvin Olsson 2025–2026
Data: IAEA & PubChem

Phosphine

PH₃·33.998 g/mol·Inorganic·CID 24404
⚠ ToxicSemiconductor

A pyramidal molecule analogous to ammonia but far more toxic. Generated in semiconductor manufacturing for doping. Its detection in Venus's atmosphere in 2020 sparked debate about possible biosignatures.

Also known as: phosphane, Hydrogen phosphide, Phosphorus trihydride, 7803-51-2, Phosphorus hydride (+14 more)

2D structure of Phosphine

Molecular Structure

Molecular Propertiesmass · H-bonds · stereo

Properties unavailable — data loading from PubChem

GHS Hazard Classification

Danger
Flammable
Flammable
Compressed Gas
Compressed Gas
Corrosive
Corrosive
Acute Toxic
Acute Toxic
Environmental Hazard
Environmental Hazard
Health Hazard
Health Hazard
Hazards
  • H220Extremely flammable gas
  • H314Causes severe skin burns and eye damage
  • H330Fatal if inhaled
  • H400Very toxic to aquatic life
  • H280Contains gas under pressure; may explode if heated
  • H370Causes damage to organs
  • H318Causes serious eye damage

Source: PubChem GHS Classification. Always consult the SDS for handling.

Constituent Elements

P
PhosphorusZ=15
H
HydrogenZ=1

External Resources

PubChem ↗Wikipedia ↗