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About This Item
Linear Formula:
(CH3O)3P
CAS Number:
Molecular Weight:
124.08
EC Number:
204-471-5
UNSPSC Code:
12352100
PubChem Substance ID:
Beilstein/REAXYS Number:
956570
MDL number:
vapor density
4.3 (vs air)
vapor pressure
17 mmHg ( 20 °C)
assay
97%
form
liquid
impurities
≤0.5% trimethyl phosphate
refractive index
n20/D 1.408 (lit.)
bp
111-112 °C (lit.)
mp
−78 °C (lit.)
density
1.052 g/mL at 25 °C (lit.)
SMILES string
COP(OC)OC
InChI
1S/C3H9O3P/c1-4-7(5-2)6-3/h1-3H3
InChI key
CYTQBVOFDCPGCX-UHFFFAOYSA-N
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signalword
Warning
hcodes
Hazard Classifications
Acute Tox. 4 Oral - Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
supp_hazards
Storage Class
3 - Flammable liquids
wgk
WGK 1
flash_point_f
82.4 °F - closed cup
flash_point_c
28 °C - closed cup
ppe
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
Regulatory Information
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Shinichi Yamabe et al.
The journal of physical chemistry. A, 114(43), 11699-11707 (2010-10-15)
Density functional theory calculations of the title reaction, P(OCH₃)₃ + (H₂O)(n) in CH₃CN, were conducted, where n is the number of water molecules. Two routes, the routes suggested by (A) Aksnes and (B) Arbuzov, were traced with various n values.
Tian-lin Zhang et al.
Guang pu xue yu guang pu fen xi = Guang pu, 24(11), 1334-1337 (2005-03-15)
The reactions of unsaturated chloride polyether polyol with trimethyl phosphite have been studied by FTIR, which was prepared by copolymerization of ethanediol, allyl glycidyl ether and epoxychloropropane. The experimental results showed that the reaction included ester-exchange reaction, ester-exchange polymerization and
M A Mehlman et al.
Toxicology and applied pharmacology, 72(1), 119-123 (1984-01-01)
Trimethyl phosphite (TMP) is an organophosphorus alkylating agent used primarily in the synthesis of organophosphate compounds. To evaluate teratogenic potential, TMP was administered by gavage to pregnant rats at rates of 16, 49, or 164 mg/kg/day, on gestation Days 6

