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152-18-1

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Basic Information
CAS No.: 152-18-1
Name: TRIMETHYL THIOPHOSPHATE
Article Data: 17
Molecular Structure:
Molecular Structure of 152-18-1 (TRIMETHYL THIOPHOSPHATE)
Formula: C3H9 O3 P S
Molecular Weight: 156.142
Synonyms: 7900-HC; HC7900; Methyl phosphorothioate ((MeO)3PS); O,O,O-Trimethyl phosphorothioate;O,O,O-Trimethyl phosphorothionate; O,O,O-Trimethyl thiophosphate; SD 4741;Trimethoxyphosphine sulfide; Trimethyl thionophosphate
Density: 1.208g/cm3
Melting Point: >116 °C (decomp)
Boiling Point: 131.3°Cat760mmHg
Flash Point: 33.2°C
Safety: Potentially explosive exothermic reaction with chlorine. When heated to decomposition it emits toxic fumes of POx and SOx.
PSA: 69.59000
LogP: 1.80070
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Chemistry

IUPAC Name:Trimethoxy(sulfanylidene)-λ5-phosphane (152-18-1)
Synonyms: O,O,O-Trimethyl phosphorothioate ; O,O,O-Trimethythiophosphate ; Trimethylphosphorothionate ; Trimethyl thiophosphate ; (CH3O)3PS ; 7900-HC ; HC7900 ; HC7900
CAS: 152-18-1
Molecular Formula of Trimethyl thiophosphate (152-18-1) : C3H9O3PS
Molecular Weight of Trimethyl thiophosphate (152-18-1) :156.14
 Molecular Structure Trimethyl thiophosphate (152-18-1) :
Mol File: 152-18-1.mol
Surface Tension: 39.6 dyne/cm
Density: 1.208 g/cm3 
Flash Point: 33.2 °C 
Enthalpy of Vaporization: 35.37 kJ/mol 
Boiling Point: 131.3 °C at 760 mmHg 
Vapour Pressure: 11.4 mmHg at 25°C

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intraperitoneal 900mg/kg (900mg/kg)   Actualites Pharmacologiques. Vol. 16, Pg. 7, 1963.
mouse LD50 oral 1150mg/kg (1150mg/kg)   Journal of Agricultural and Food Chemistry. Vol. 28, Pg. 599, 1980.
rat LC50 inhalation 220ppm/4H (220ppm)   "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986Vol. -, Pg. 1148, 1986.
rat LD50 oral 562mg/kg (562mg/kg)   "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986Vol. -, Pg. 1148, 1986.

Safety Profile

RIDADR  UN3278
HazardClass  6.1
PackingGroup  III