C3H9O4P
140.07 g/mol
Industrial ChemicalDanger
TRIMETHYL PHOSPHATE
CAS512-56-1EC208-144-8
Category
Industrial Chemical
Compound Class
Ester
Primary Use
gasoline additive and flame retardant solvent
Trimethyl phosphate is an industrial chemical used primarily as a gasoline additive and a flame-retardant solvent for paints and polymers. The Environmental Protection Agency (EPA) has identified it as a potential human carcinogen.
gasoline additive for controlling spark plug fouling and surface ignitionflame-retardant solvent for paints and polymersmethylating agent and chemical intermediate for polymethyl polyphosphates
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.
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
Relevant lists:California Proposition 65
CAS 512-56-1
Related Compounds
ReferenceSame Category
1,2-DIBROMOPROPANE-D6
CAS51209-47-3
Deuterated solvent or reference standard
ReferenceSame Category
2,4,4-Trimethylpentan-2-yl 2-ethyl-2-methylheptaneperoxoate
CAS51240-95-0
Polymerization initiator for PVC production
ReferenceSame Category
(S)-1,2-Propanediol carbonate
CAS51260-39-0
cyclic carbonate solvent
ReferenceSame Category
Isobutyl chloride
CAS513-36-0
Organochlorine chemical intermediate
Safety Reference
Danger
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H340May cause genetic defects
H351Suspected of causing cancer
H360May damage fertility or the unborn child
H320Causes eye irritation
H361Suspected of damaging fertility or the unborn child
H371May cause damage to organs
H373May cause damage to organs through prolonged or repeated exposure
Regulatory Compliance1
- California Proposition 65USRegulation
Customs Tariff Classification
The international HS code for TRIMETHYL PHOSPHATE (CAS 512-56-1) is 2919.90.
HS code (international, 6-digit)
2919.90
EU CN code (8-digit)
2919 90 00
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
trimethyl phosphate
InChIKey
WVLBCYQITXONBZ-UHFFFAOYSA-N
SMILES
COP(=O)(OC)OC
Synonyms (18)
- TMPA
- TMPO
- TZZ
- Methyl phosphate, (MeO)3PO
- O,O,O-Trimethyl phosphate
- PO(OMe)3
- Phosphate, trimethyl-
- TMP (PHOSPHATE)
- TRIMETHYL PHOSPHATE
- Trimethoxyphosphine oxide
- Trimethyl Phosphate (TMP)
- Trimethyl orthophosphate
- Trimethylfosfat
- Trimethylfosfat [Czech]
- dimethylphosphonomethanol
- trimethylphosphoric acid