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152-18-1 Usage

General Description

Trimethyl thiophosphate is a colorless liquid chemical compound distinguished by its offensive odor. It is characterized by its formula (CH3O)3PS. TRIMETHYL THIOPHOSPHATE is primarily used in the manufacturing of pesticides and fungicides. It is a powerful organophosphorus insecticide and acaricide that targets a broad range of pests. However, this chemical is hazardous and requires careful handling. It can cause harm if swallowed, inhaled, or comes into contact with skin. Overexposure can lead to symptoms like nausea, headache, confusion, and in severe cases, convulsions and even death.

Check Digit Verification of cas no

The CAS Registry Mumber 152-18-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,5 and 2 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 152-18:
41 % 10 = 1
So 152-18-1 is a valid CAS Registry Number.

152-18-1 Well-known Company Product Price

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  • Alfa Aesar

  • (30395)  Trimethyl thiophosphate   

  • 152-18-1

  • 1g

  • 244.0CNY

  • Detail
  • Alfa Aesar

  • (30395)  Trimethyl thiophosphate   

  • 152-18-1

  • 5g

  • 977.0CNY

  • Detail
  • Alfa Aesar

  • (30395)  Trimethyl thiophosphate   

  • 152-18-1

  • 25g

  • 2778.0CNY

  • Detail



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017


1.1 GHS Product identifier

Product name trimethoxy(sulfanylidene)-λ<sup>5</sup>-phosphane

1.2 Other means of identification

Product number -
Other names Trimethyl thiophosphate

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:152-18-1 SDS

152-18-1Relevant articles and documents

Mononuclear versus dinuclear palladacycles derived from 1,3-bis(N,N-dimethylaminomethyl)benzene: Structures and catalytic activity

Liu, Bian-Bian,Wang, Xue-Rui,Guo, Zhi-Fo,Lu, Zhong-Lin

, p. 814 - 817 (2010)

Mononuclear and dinuclear palladacycles derived from 1,3-bis(N,N- dimethylaminomethyl)benzenes, [{Pd (Cl)}2,6-(Me2NCH2) 2C6H3] (1) and [1-{Pd(H2O)(Py)}-5- {Pd(OTf)(Py)-2,4-(Me2NCH2)2C6H 2]-(OTf) (2), were synthesized and their structures were fully characterized. Complex 1 is a pincer complex with η3-mer NCN phenyl backbone, complex 2 is a bispalladium(II) complex with 1,2- and 4,5- two C,N-ortho phenyl backbone. Whereas the pincer complex 1 acted as a poor catalyst on methanolysis of fenitrothion, complex 2 demonstrated high catalytic activity in the same reactions, but there is no synergetic effect between two palladium ions. The results clearly indicate that a dissociable co-ligand in the palladacycle compounds significantly promotes the catalytic methanolysis.



Page/Page column 36, (2018/04/11)

The invention herein describes a synthetic method for preparing thiolated oligonucleotides without needing a capping step, as the sulfurization agent caps the unreacted 5'-OH groups.

Mechanistic and computational study of a palladacycle-catalyzed decomposition of a series of neutral phosphorothioate triesters in methanol

Liu, C. Tony,Maxwell, Christopher I.,Edwards, David R.,Neverov, Alexei A.,Mosey, Nicholas J.,Brown, R. Stan

experimental part, p. 16599 - 16609 (2011/02/23)

The methanolytic cleavage of a series of O,O-dimethyl O-aryl phosphorothioates (1a-g) catalyzed by a C,N-palladacycle, (2-[N,N- dimethylamino(methyl)phenyl]-C1,N)(pyridine) palladium(II) triflate (3), at 25 °C and sspH 11.7 in methanol is reported, along with data for the methanolytic cleavage of 1a-g. The methoxide reaction gives a linear log k2-OMe vs sspKa (phenol leaving group) Bronsted plot having a gradient of βlg = -0.47 ± 0.03, suggesting about 34% cleavage of the P-OAr bond in the transition state. On the other hand, the 3-catalyzed cleavage of 1 gives a Bronsted plot with a downward break at sspKa (phenol) ~ 13, signifying a change in the rate-limiting step in the catalyzed reaction, with the two wings having βlg values of 0.0 ± 0.03 and -1.93 ± 0.06. The rate-limiting step for good substrates with low leaving group sspKa values is proposed to be substrate/pyridine exchange on the palladacycle, while for substrates with poor leaving groups, the rate-limiting step is a chemical one with extensive cleavage of the P-OAr bond. DFT calculations support this process and also identify two intermediates, namely, one where substrate/pyridine interchange has occurred to give the palladacycle coordinated to substrate through the S - P linkage and to methoxide (6) and another where intramolecular methoxide attack has occurred on the P - S unit to give a five-coordinate phosphorane (7) doubly coordinated to Pd via the S- and through a bridging methoxide linked to P and Pd. Attempts to identify the existence of the phosphorane by 31P NMR in a d4-methanol solution containing 10 mM each of 3, trimethyl phosphorothioate (a very slow cleaving substrate), and methoxide proved unsuccessful, instead showing that the phosphorothioate was slowly converted to trimethyl phosphate, with the palladacycle decomposing to Pd0 and free pyridine. These results provide the first reported example where a palladacycle-promoted solvolysis reaction exhibits a break in the Bronsted plot signifying at least one intermediate, while the DFT calculations provide further insight into a more complex mechanism involving two intermediates.

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