Trimethyl phosphite, 99%

Name: Trimethyl phosphite, 99%
Brand: Vaqora Chemicals
SKU: VQ-011622

About Trimethyl phosphite, 99%

Listed under CAS 121-45-9, Trimethyl phosphite is an organic building block available from Vaqora Chemicals with a typical assay of ≥99%. Formula C3H9O3P, molecular weight 124.08 g/mol. Common synonyms include Methyl phosphite and P(OMe)3.

In its supplied form it is a colourless liquid. Reported physical data include a density of 1.051-1.053 g/mL. Store in a cool, well-ventilated place, away from sources of ignition, with the container tightly sealed. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

Key uses span organic synthesis and coordination chemistry. It is used across pharmaceutical manufacturing and academic and industrial research.

Available in 250 mL, 500 mL and 200 kg packs, Trimethyl phosphite is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Organic synthesis
Coordination chemistry

Industries

Specifications & identifiers

Chemical identifiers
Product name	Trimethyl phosphite, 99%
Catalogue No.	VQ-011622
CAS Number	121-45-9
IUPAC name	trimethyl phosphite
Molecular formula	C₃H₉O₃P
Molecular weight	124.08 g/mol
Exact mass	124.0289
Purity / assay	≥99%
HSN code	29202300
InChIKey	CYTQBVOFDCPGCX-UHFFFAOYSA-N
SMILES	COP(OC)OC
PubChem CID	8472

Physical properties
Physical form	Liquid
Appearance	Colourless liquid
Density	1.051-1.053 g/mL
LogP (XLogP3)	0.1
H-bond donors / acceptors	0 / 3
TPSA	27.7 Å²
UN number	UN 2329
Synonyms	Methyl phosphite, P(OMe)3, Trimethoxyphosphine, Trimethylphosphite, Phosphorous acid, trimethyl ester, Trimethoxyfosfin, Fosforyn trojmetylowy, Trimethyl ester of phosphorous acid, Methyl phosphite ((MeO)3P), P(OCH3)3, Trimethyl Ester Phosphorous Acid, TMPhite

Safety & hazard information (GHS)

Flammable

Corrosive

Harmful / irritant

Health hazard

Signal word: Danger

Hazard statements

H226Flammable liquid and vapor
H302Harmful if swallowed
H312Harmful in contact with skin
H315Causes skin irritation
H318Causes serious eye damage
H319Causes serious eye irritation
H332Harmful if inhaled
H335May cause respiratory irritation
H361Suspected of damaging fertility or the unborn child

Precautionary statements: P203, P210, P233, P240, P241, P242, P243, P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P303 + P361 + P353, P304 + P340, P305 + P351 + P338, P305 + P354 + P338, P317, P318, P319, P321, P330

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Trimethyl phosphite, 99%?

The CAS Registry Number of Trimethyl phosphite, 99% is 121-45-9. It is also known as Methyl phosphite, P(OMe)3, Trimethoxyphosphine.

What is the molecular formula and molecular weight of Trimethyl phosphite, 99%?

Trimethyl phosphite, 99% has the molecular formula C3H9O3P and a molecular weight of 124.08 g/mol. Its IUPAC name is trimethyl phosphite.

Which grade and pack sizes of Trimethyl phosphite, 99% can I order?

We supply Trimethyl phosphite, 99% in (≥99%) grade, in 250 mL, 500 mL, 200 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Trimethyl phosphite, 99%?

Yes. Every lot of Trimethyl phosphite, 99% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Trimethyl phosphite, 99% be shipped internationally?

Yes. Trimethyl phosphite, 99% is classified as hazardous (UN 2329), so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.