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.
IUPAC: phosphane
Also known as: phosphane, Hydrogen phosphide, Phosphorus trihydride, 7803-51-2, Phosphorus hydride (+14 more)
Molecular Structure
Molecular Propertiesmass · H-bonds · stereo
Molecular Weight
33.998g/mol
Exact Mass
33.997237Da
Monoisotopic Mass
33.997237Da
XLogP
-0.1
Polar Surface Area
0.0Ų
Complexity
0
Formal Charge
0
H-Bond Donors
0
H-Bond Acceptors
0
Rotatable Bonds
0
Heavy Atoms
1
Stereo Centers
0
Bond Stereo
0
Drug-Likeness (Lipinski's Rule of Five)
✓ 34.0 g/mol
MW ≤ 500
✓ -0.1
LogP ≤ 5
✓ 0
H-bond donors ≤ 5
✓ 0
H-bond acceptors ≤ 10
Passes all rules — good oral bioavailability predicted
GHS Hazard Classification
Danger
Hazards
H220Extremely flammable gasH314Causes severe skin burns and eye damageH330Fatal if inhaledH400Very toxic to aquatic lifeH280Contains gas under pressure; may explode if heatedH370Causes damage to organsH318Causes serious eye damage
Source: PubChem GHS Classification. Always consult the SDS for handling.
Constituent Elements
Isomers8 compounds with formula PH₃
trideuteriophosphane
CID 139493 · 37.0 g/mol
CID 5460505
CID 5460505 · 34.0 g/mol
hydron;phosphorus(3-)
CID 22257263 · 34.0 g/mol
phosphane
CID 26751 · 35.0 g/mol
dideuteriophosphane
CID 139599 · 36.0 g/mol
phosphane
CID 161144 · 36.0 g/mol
phosphane
CID 10153977 · 34.0 g/mol
protiophosphane
CID 139504 · 34.0 g/mol