P4
123.895048 g/mol
Industrial ChemicalDanger
Tetraphosphorus
CAS12185-10-3
Category
Industrial Chemical
Compound Class
Other
Primary Use
phosphoric acid and chemical production
Tetraphosphorus (white phosphorus) is an allotrope of phosphorus discovered in 1669 by Henning Brand. It is a translucent waxy solid that yellows upon exposure to light due to conversion to red phosphorus.
production of phosphoric acidchemical production
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Controlled substances
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Relevant lists:US DEA List I Chemicals
CAS 12185-10-3
Related Compounds
ReferenceSame Category
1-CHLOROHEXANE-D13
CAS1219798-45-4
Deuterated reference compound
ReferenceSame Category
Anisyl chloride
CAS1219804-86-0
chemical intermediate for organic synthesis
ReferenceSame Category
4-PENTYLPHENOL
CAS1219805-30-7
liquid crystal intermediate
ReferenceSame Category
4-chlorobenzoyl chloride
CAS122-01-0
Fine chemical intermediate
Safety Reference
Danger
H250Catches fire spontaneously if exposed to air
H300Fatal if swallowed
H314Causes severe skin burns and eye damage
H330Fatal if inhaled
H400Very toxic to aquatic life
H318Causes serious eye damage
H410Very toxic to aquatic life with long lasting effects
H310Fatal in contact with skin
H335May cause respiratory irritation
H361Suspected of damaging fertility or the unborn child
H370Causes damage to organs
H372Causes damage to organs through prolonged or repeated exposure
Customs Tariff Classification
The international HS code for Tetraphosphorus (CAS 12185-10-3) is 2804.70.
HS code (international, 6-digit)
2804.70
EU CN code (8-digit)
2804 70 90
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
1,2,3,4-tetraphosphatricyclo[1.1.0.02,4]butane
InChIKey
OBSZRRSYVTXPNB-UHFFFAOYSA-N
SMILES
P12P3P1P23
Synonyms (22)
- P4
- Molecular phosphorus
- P (white)
- Phosphorus (white or yellow)
- Phosphorus (yellow)
- Phosphorus molecule (P4)
- Phosphorus tetramer
- Phosphorus white, moten
- Phosphorus, White
- Phosphorus, mol. (P4)
- Tetraatomic phosphorus
- Tetrameric phosphorus
- White Phosphorus
- White Phosphorus (P4)
- Yellow phosphorus
- tetrahedro-tetraphosphorus
- tetraphosphorus