Diethyl phosphite, 98%

Name: Diethyl phosphite, 98%
Brand: Vaqora Chemicals
SKU: VQ-011425

About Diethyl phosphite, 98%

Listed under CAS 762-04-9, Diethyl phosphite is an organic building block available from Vaqora Chemicals, specified at 98% purity. The compound has the formula C4H10O3P+, corresponding to a molecular weight of 137.09 g/mol. Systematically, it is named diethoxy(oxo)phosphanium. Common synonyms include Diethyl phosphonate and Diethoxyphosphine oxide.

It is supplied as a colourless to light yellow liquid. Literature values give a density of 1.072 g/mL at 25 °C. Store in a cool, well-ventilated place, away from sources of ignition, with the container tightly sealed. It carries the GHS signal word “Danger” with 5 hazard statements. Review the Safety Data Sheet before use.

Typical applications include catalysis and organic synthesis. It is used across pharmaceutical manufacturing and academic and industrial research.

We offer Diethyl phosphite in 250 g and 1 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Catalysis
Organic synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	Diethyl phosphite, 98%
Catalogue No.	VQ-011425
CAS Number	762-04-9
IUPAC name	diethoxy(oxo)phosphanium
Molecular formula	C₄H₁₀O₃P⁺
Molecular weight	137.09 g/mol
Exact mass	137.0368
Purity / assay	98%
HSN code	29333990
InChIKey	LXCYSACZTOKNNS-UHFFFAOYSA-N
SMILES	CCO[P+](=O)OCC
PubChem CID	6327654

Physical properties
Physical form	Liquid
Appearance	Colourless to light yellow liquid
Density	1.072 g/mL at 25 °C
LogP (XLogP3)	0.7
H-bond donors / acceptors	0 / 3
TPSA	35.5 Å²
Synonyms	Diethyl phosphonate, Diethoxyphosphine oxide, Phosphonic acid diethyl ester, Phosphonic acid, diethyl ester, Diethyl acid phosphite, Hydrogen diethyl phosphite, O,O-Diethyl phosphonate, Phosphorous acid, diethyl ester, Ethyl phosphonate ((EtO)2HPO), O,ODiethyl phosphonate, Diethyl hydrogen phosphite, Diethylphosphonate

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Signal word: Danger

Hazard statements

H315Causes skin irritation
H317May cause an allergic skin reaction
H318Causes serious eye damage
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P272, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P305 + P354 + P338, P317, P319, P321, P332 + P317, P333 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

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 Diethyl phosphite, 98%?

The CAS Registry Number of Diethyl phosphite, 98% is 762-04-9. It is also known as Diethyl phosphonate, Diethoxyphosphine oxide, Phosphonic acid diethyl ester.

What is the molecular formula and molecular weight of Diethyl phosphite, 98%?

Diethyl phosphite, 98% has the molecular formula C4H10O3P+ and a molecular weight of 137.09 g/mol. Its IUPAC name is diethoxy(oxo)phosphanium.

Which grade and pack sizes of Diethyl phosphite, 98% can I order?

We supply Diethyl phosphite, 98% in (98%) grade, in 250 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Diethyl phosphite, 98%?

Yes. Every lot of Diethyl phosphite, 98% 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 Diethyl phosphite, 98% be shipped internationally?

Yes. Diethyl phosphite, 98% is classified as hazardous, 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.