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Trimethyl phosphonoacetate

Product Name
Trimethyl phosphonoacetate
CAS No.
5927-18-4
Chemical Name
Trimethyl phosphonoacetate
Synonyms
TMPA;METHYL DIMETHYLPHOSPHONOACETATE;Methyl (dimethoxyphosphoryl)acetate;NSC 84262;TRIMETHYL PHOPHONOACETATE;trimethylacetyl phosphate;TriMethyl phosphonoacetat;Trimethylphosphoroacetate;TRIMETHYL PHOSPHONACETATE;RIMETHYL PHOSPHONOACETATE
CBNumber
CB6726270
Molecular Formula
C5H11O5P
Formula Weight
182.11
MOL File
5927-18-4.mol
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Trimethyl phosphonoacetate Property

Melting point:
242 °C
Boiling point:
118 °C0.85 mm Hg(lit.)
Density 
1.125 g/mL at 25 °C(lit.)
refractive index 
n20/D 1.437(lit.)
Flash point:
>230 °F
storage temp. 
Keep in dark place,Sealed in dry,Room Temperature
form 
Liquid
Specific Gravity
approximate 1.265g/ml (20℃)
color 
Clear colorless to light yellow
Water Solubility 
Slightly miscible with water.
BRN 
1865177
LogP
-0.680 (est)
CAS DataBase Reference
5927-18-4(CAS DataBase Reference)
NIST Chemistry Reference
Trimethyl phosphonoacetate(5927-18-4)
EPA Substance Registry System
Acetic acid, (dimethoxyphosphinyl)-, methyl ester (5927-18-4)
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Safety

Safety Statements 
23-24/25
WGK Germany 
3
9
TSCA 
Yes
HS Code 
29310095
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H227Combustible liquid

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
T79758
Product name
Trimethyl phosphonoacetate
Purity
98%
Packaging
25g
Price
$105
Updated
2025/07/31
Sigma-Aldrich
Product number
T79758
Product name
Trimethyl phosphonoacetate
Purity
98%
Packaging
100g
Price
$129
Updated
2025/07/31
TCI Chemical
Product number
P1265
Product name
Trimethyl Phosphonoacetate
Purity
>96.0%(GC)
Packaging
25g
Price
$49
Updated
2025/07/31
TCI Chemical
Product number
P1265
Product name
Trimethyl Phosphonoacetate
Purity
>96.0%(GC)
Packaging
250g
Price
$231
Updated
2025/07/31
TRC
Product number
T798125
Product name
Trimethyl Phosphonoacetate
Packaging
100g
Price
$1320
Updated
2021/12/16
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Trimethyl phosphonoacetate Chemical Properties,Usage,Production

Chemical Properties

clear colorless to light yellow liquid

Uses

Trimethyl phosphonoacetate is used in the preparation of sarin A by intramolecular Mannich-type reactions. It is involved in the Horner-Wadsworth-Emmons olefination with aldehydes and ketones to give acrylic esters. It is also involved in oxa-Michael reactions, prenylation of oxindoles and heterocyclization reactions.

Application

Trimethyl phosphonoacetate is an important Wittig-horner reagent, which can be used to manufacture important intermediates of natural compounds such as vitamins, drugs, insect pheromones, etc.
Reactant involved in:
Intramolecular Mannich-type reactions to produce the sarain A diazatricyclic core
Organocatalytic oxa-Michael reactions
Prenylation and geranylation of oxindoles
Intramolecular Horner-Wadsworth-Emmons reactions
Olefin cross-metathesis / heterocyclization

Definition

ChEBI: Trimethyl phosphonoacetate is a phosphonic ester.

reaction suitability

reaction type: C-C Bond Formation

Synthesis

The trimethyl phosphonoacetate is prepared from trimethyl phosphite and methyl chloroacetate through Michael Arbuzov rearrangement reaction. The synthetic method satisfies the chemical equations that CH2ClCOOH + CH3OH → CH5ClO2 + H2O, CH5ClO2 + C3H9O3P → C5H11O5P + CH3Cl.

Trimethyl phosphonoacetate Preparation Products And Raw materials

Raw materials

Preparation Products

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Trimethyl phosphonoacetate Suppliers

Jiangxi Sunway Chemical Co., Ltd.
Tel
15888611133; 13566409786;18605760166
Email
trade@jxswchem.com
Country
China
ProdList
15
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58
Shandong Vantage Specialty Chemicals Biotechnology Co., Ltd.
Tel
13396369453 QQ3007939906 18678026865
Fax
0536-2101172
Email
sdfantai@163.com
Country
China
ProdList
906
Advantage
58
Nanjing Dilu Pharmaceutical Co., Ltd
Tel
18014482516; 18014482516
Email
977144864@qq.com
Country
China
ProdList
419
Advantage
58
IGM RESINS
Tel
021-52080993 13917193189
Fax
021-5208 0930,010-62620366,020-32008365
Email
selene.wu@igmresins.com
Country
China
ProdList
89
Advantage
57
J & K SCIENTIFIC LTD.
Tel
18210857532; 18210857532
Fax
86-10-82849933
Email
jkinfo@jkchemical.com
Country
China
ProdList
96815
Advantage
76
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
4006356688 18621169109
Fax
86-21-61259102
Email
market03@meryer.com
Country
China
ProdList
40228
Advantage
62
Beijing Donghualituo Techonlogy Development Co.,Ltd.
Tel
010-88425576
Fax
(+86)-10-88425546
Email
sales@dhltchem.com
Country
China
ProdList
793
Advantage
59
INTATRADE GmbH
Tel
+49 3493/605464
Fax
+49 3493/605470
Email
sales@intatrade.de
Country
Germany
ProdList
3572
Advantage
66
Alfa Aesar
Tel
400-6106006
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30123
Advantage
84
TAIYUAN RHF CO.,LTD.
Tel
+86 351 7031519
Fax
+86 351 7031519
Email
sales@RHFChem.com
Country
China
ProdList
2338
Advantage
56
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View Lastest Price from Trimethyl phosphonoacetate manufacturers

Shandong Vital Biotechnology Co., Ltd.
Product
Trimethyl phosphonoacetate 5927-18-4
Price
US $0.00-0.00/kg
Min. Order
1kg
Purity
98%
Supply Ability
100tons
Release date
2025-11-20
Hebei Zhuanglai Chemical Trading Co Ltd
Product
Trimethyl phosphonoacetate 5927-18-4
Price
US $10.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
20 ton
Release date
2024-12-04
Hebei Chuanghai Biotechnology Co., Ltd
Product
Trimethyl phosphonoacetate 5927-18-4
Price
US $30.00-10.00/KG
Min. Order
50KG
Purity
99%
Supply Ability
500000kg
Release date
2024-10-24

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  • 5927-18-4
  • CH3O2POCH2CO2CH3
  • C5H11O5P
  • Horner-Wadsworth-Emmons Reagents
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  • Synthetic Organic Chemistry
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  • Horner-Wadsworth-Emmons Reagents
  • Olefination
  • 5927-18-4