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1111-99-5

O-methyl dihydrogen thiophosphate, also known as O-methyl phosphorothioic acid or O-methyl ester of dihydrogen thiophosphate, is an organophosphorus compound with the chemical formula C2H7O3PS. It is a colorless liquid that is soluble in water and organic solvents. O-methyl dihydrogen thiophosphate is primarily used as a precursor in the synthesis of various organophosphorus compounds, including pesticides and flame retardants. It is also employed as a reagent in the preparation of other phosphorus-containing compounds. Due to its potential toxicity and environmental impact, handling and disposal of O-methyl dihydrogen thiophosphate must be done with proper safety measures and in accordance with local regulations.

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  • 1111-99-5 Structure

  • Basic information

    1. Product Name: O-methyl dihydrogen thiophosphate
    2. Synonyms:
    3. CAS NO:1111-99-5
    4. Molecular Formula: CH5O3PS
    5. Molecular Weight: 128.0874
    6. EINECS: N/A
    7. Product Categories: N/A
    8. Mol File: 1111-99-5.mol

  • Chemical Properties

    1. Melting Point: N/A
    2. Boiling Point: 247.3°C at 760 mmHg
    3. Flash Point: 103.3°C
    4. Appearance: N/A
    5. Density: 1.633g/cm3
    6. Vapor Pressure: 0.00424mmHg at 25°C
    7. Refractive Index: 1.567
    8. Storage Temp.: N/A
    9. Solubility: N/A
    10. CAS DataBase Reference: O-methyl dihydrogen thiophosphate(CAS DataBase Reference)
    11. NIST Chemistry Reference: O-methyl dihydrogen thiophosphate(1111-99-5)
    12. EPA Substance Registry System: O-methyl dihydrogen thiophosphate(1111-99-5)

  • Safety Data

    1. Hazard Codes: N/A
    2. Statements: N/A
    3. Safety Statements: N/A
    4. WGK Germany:
    5. RTECS:
    6. HazardClass: N/A
    7. PackingGroup: N/A
    8. Hazardous Substances Data: 1111-99-5(Hazardous Substances Data)

1111-99-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1111-99-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,1,1 and 1 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1111-99:
(6*1)+(5*1)+(4*1)+(3*1)+(2*9)+(1*9)=45
45 % 10 = 5
So 1111-99-5 is a valid CAS Registry Number.

1111-99-5SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name dihydroxy-methoxy-sulfanylidene-λ<sup>5</sup>-phosphane

1.2 Other means of identification

Product number -
Other names O-Methyl-thiophosphorsaeure

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:1111-99-5 SDS

1111-99-5Downstream Products

1111-99-5Relevant articles and documents

An Unusual Two-Step Hydrolysis of Nerve Agents by a Nanozyme

Khulbe, Kritika,Roy, Punarbasu,Radhakrishnan, Anusree,Mugesh, Govindasamy

, p. 4840 - 4845 (2018/09/27)

Organophosphate-based nerve agents irreversibly inhibit acetylcholinesterase enzyme, leading to respiratory failure, paralysis and death. Several organophosphorus hydrolases are capable of degrading nerve agents including pesticides and insecticides. Development of stable artificial enzymes capable of hydrolysing nerve agents is important for the degradation of environmentally toxic organophosphates. Herein, we describe a Zr-incorporated CeO2 nanocatalyst that can be used for an efficient capture and hydrolysis of nerve agents such as methyl paraoxon to less toxic monoesters. This unusual sequential degradation pathway involves a covalently linked nanocatalyst-phosphodiester intermediate.

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