Trimethyl phosphite is an important organic phosphorus intermediate, which can be used to synthesize organophosphorus insecticides dichlorvos, monocrotophos, phosphamide, phosphate, chlorothalonil, chlorfenvalerate, and other intermediates, such as O, o-dimethyl phosphoryl chloride, O, o-dimethyl sulfur (alcohol) substituted phosphate, etc. in addition, it can also be used in other organic synthesis, chemical fiber flame retardant, ionic film, pharmaceutical industry, etc.
CAS No.
121-45-9
Formula
C3H9O3P
Molecular Mass
124.07600
Exact Mass
124.02900
PSA
41.28000
Logp
1.15250
IUPAC
trimethyl phosphite
Attribute classification
Matter Classification
organic
Category
Chemical and Physical Properties
Melting Point
−78 °C(lit.)
Density
1.052 g/mL at 25 °C(lit.)
Boiling Point
111-112 °C(lit.)
Flash Point
82 °F
Appearance
Colorless transparent liquid with pungent odor, soluble in organic solvents such as methanol, ethanol and benzene, and decomposed into dimethyl phosphite in water.
Manufacturing
