Trimethyl Phosphite

Synonym: Methyl phosphite, TMP, Trimethoxyphosphite
CAS Number 121-45-9 | MDL Number MFCD00008350 | EC Number 204-471-5

Trimethyl Phosphite Chemical Structure

Product CodeP1459
CAS Number121-45-9
Assay (purity)99.999%
Purity methodby elemental analysis
Molecular weight124.08
Appearancecolorless liquid
Sensitivitymoisture, heat
Melting point-78C
Boiling point111-112C
Molecular formulaC3H9O3P
Linear formula(CH3O)3P

Ereztech manufactures and sells this product in small and bulk volumes. Glass ampules, bottles or metal ampules or bubblers are available for packaging. For additional analytical information or details about purchasing Trimethyl Phosphite contact us at

Safety information

Signal wordDANGER
Hazard statementsH226, H302, H315, H318, H335
Precautionary statementsP210, P233, P240, P241, P242, P243, P261, P264, P270, P271, P280, P301+P312, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P310, P312, P321, P330, P332+P313, P362, P370+P378, P403+P233, P403+P235, P405, P501
Transport descriptionTRIMETHYL PHOSPHITE
Hazardous class3
Packing groupIII
In TSCA registryYes
Flash point28C

Certificates of analysis (CoA)

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External identifiers for Methyl phosphite

Pubchem CID8472
IUPAC Nametrimethyl phosphite
InchI IdentifierInChI=1S/C3H9O3P/c1-4-7(5-2)6-3/h1-3H3

Ereztech synthesizes and sells additional P-compounds.

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