Trimethyl phosphate

Structural formula
General
Surname	Trimethyl phosphate
other names	Phosphoric acid trimethyl ester; TMP; TMPA; TMPO;
Molecular formula	C 3 H 9 O 4 P
Brief description	colorless liquid with a pleasant odor
External identifiers / databases
EC number	208-144-8
ECHA InfoCard	100.007.405
PubChem	10541
ChemSpider	10101
Wikidata	Q2623529
properties
Molar mass	140.08 g mol −1
Physical state	liquid
density	1.21 g cm −3
Melting point	-46 ° C
boiling point	197 ° C
Vapor pressure	1.133 hPa (20 ° C); 1.7 hPa (30 ° C); 5.6 hPa (50 ° C);
solubility	easily soluble in water (1000 g l −1 at 25 ° C); soluble in most organic solvents;
Refractive index	1.395 (20 ° C)
safety instructions
H and P phrases	H: 302-315-319-340-351
	P: 201-302 + 352-305 + 351 + 338
Toxicological data	840 mg kg −1 ( LD 50 , rat , oral ) ; 3440 mg kg −1 ( LD 50 , rabbit / mouse , transdermal ) ;
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Trimethyl phosphate is a chemical compound from the group of phosphoric acid esters .

Extraction and presentation

Trimethyl phosphate can be obtained by reacting phosphorus oxychloride with methanol .

properties

Trimethyl phosphate is a flammable, hardly ignitable, fire-suffocating, colorless liquid with a pleasant odor, which is easily soluble in water. It decomposes when heated. The flash point of the compound is 150 ° C.

use

Trimethyl phosphate is used as a stabilizer and antioxidant , as a gasoline additive to control surface ignition, as a methylating agent (especially for sterically hindered carboxylic acids ), as a chemical intermediate in the production of polymethyl polyphosphates, as a flame retardant solvent for paints and polymers, and as a catalyst in the production of polymers and Resins used.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o Entry on trimethyl phosphate in the GESTIS substance database of the IFA , accessed on January 9, 2019(JavaScript required) .
↑ ^a ^b ^c Jürgen Falbe, Manfred Regitz: Römpp Lexikon Chemie, 10th edition, 1996-1999 Volume 6: T - Z . Georg Thieme Verlag, 2014, ISBN 3-13-200061-2 , p. 4658 ( limited preview in Google Book search).
↑ Data sheet Trimethyl phosphate, ≥99% from Sigma-Aldrich , accessed on January 9, 2019 ( PDF ).
↑ ^a ^b Entry on trimethyl phosphate in the Hazardous Substances Data Bank , accessed January 9, 2019.

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o Entry on trimethyl phosphate in the GESTIS substance database of the IFA , accessed on January 9, 2019(JavaScript required) .

[Jürgen_Falbe,_Manfred_Regitz-2] Jürgen Falbe, Manfred Regitz: Römpp Lexikon Chemie, 10th edition, 1996-1999 Volume 6: T - Z . Georg Thieme Verlag, 2014, ISBN 3-13-200061-2 , p. 4658 ( limited preview in Google Book search).

[Sigma-3] Data sheet Trimethyl phosphate, ≥99% from Sigma-Aldrich , accessed on January 9, 2019 ( PDF ).

[HSDB-4] Entry on trimethyl phosphate in the Hazardous Substances Data Bank , accessed January 9, 2019.