Trimethyl phosphite

Trimethyl phosphite

Names
Preferred IUPAC name Trimethyl phosphite[1]
Other names Trimethoxyphosphine Trimethoxyphosphane
Identifiers
CAS Number	121-45-9 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:183313
ChemSpider	8159 Y
ECHA InfoCard	100.004.065
PubChem CID	8472
UNII	26Q0321ZDG Y
CompTox Dashboard (EPA)	DTXSID4026979
InChI InChI=1S/C3H9O3P/c1-4-7(5-2)6-3/h1-3H3 Y Key: CYTQBVOFDCPGCX-UHFFFAOYSA-N Y InChI=1/C3H9O3P/c1-4-7(5-2)6-3/h1-3H3 Key: CYTQBVOFDCPGCX-UHFFFAOYAO
SMILES COP(OC)OC
Properties
Chemical formula	C3H9O3P
Molar mass	124.08
Appearance	colorless liquid
Odor	distinctive, pungent[2]
Density	1.052
Melting point	−78 °C (−108 °F; 195 K)
Boiling point	111 °C (232 °F; 384 K)
Solubility in water	reacts[2]
Vapor pressure	24 mmHg (25°C)[2]
Hazards
Flash point	28 °C; 82 °F; 301 K[2]
NIOSH (US health exposure limits):
PEL (Permissible)	none[2]
REL (Recommended)	TWA 2 ppm (10 mg/m3)[2]
IDLH (Immediate danger)	N.D.[2]
Related compounds
Related compounds	Dimethyl methylphosphonate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

Trimethyl phosphite is an organophosphorus compound with the formula P(OCH₃)₃, often abbreviated P(OMe)₃. It is a colorless liquid with a highly pungent odor. It is the simplest phosphite ester and finds used as a ligand in organometallic chemistry and as a reagent in organic synthesis. The molecule features a pyramidal phosphorus(III) center bound to three methoxy groups.