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Diphosphoric acid α-(chloromethyl)α,β,β-trimethyl ester, also known as chloromethyl methyl phosphonate, is an organophosphorus compound with the chemical formula C3H8ClO3P2. It is a colorless liquid with a molecular weight of 200.49 g/mol. Diphosphoric acid α-(chloromethyl)α,β,β-trimethyl ester is characterized by the presence of a chloromethyl group attached to a diphosphoric acid molecule, with two methyl groups also attached to the phosphorus atoms. It is used as a reagent in organic synthesis, particularly in the preparation of various phosphorus-containing compounds. Due to its reactivity and potential toxicity, it is important to handle this chemical with care, following appropriate safety measures.

3309-75-9

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Basic information
1. Product Name: Diphosphoric acid α-(chloromethyl)α,β,β-trimethyl ester
2. Synonyms: ACR-58-26;Diphosphoric acid α-(chloromethyl)α,β,β-trimethyl ester;ENT-25561;Grace CPE
3. CAS NO:3309-75-9
4. Molecular Formula: C4H11ClO7P2
5. Molecular Weight: 268.526462
6. EINECS: N/A
7. Product Categories: N/A
8. Mol File: 3309-75-9.mol
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: 214°C at 760 mmHg
3. Flash Point: 62.8°C
4. Appearance: /
5. Density: 1.443g/cm³
6. Vapor Pressure: 0.233mmHg at 25°C
7. Refractive Index: 1.428
8. Storage Temp.: N/A
9. Solubility: N/A
10. CAS DataBase Reference: Diphosphoric acid α-(chloromethyl)α,β,β-trimethyl ester(CAS DataBase Reference)
11. NIST Chemistry Reference: Diphosphoric acid α-(chloromethyl)α,β,β-trimethyl ester(3309-75-9)
12. EPA Substance Registry System: Diphosphoric acid α-(chloromethyl)α,β,β-trimethyl ester(3309-75-9)
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: 3309-75-9(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 3309-75-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,3,0 and 9 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 3309-75:
(6*3)+(5*3)+(4*0)+(3*9)+(2*7)+(1*5)=79
79 % 10 = 9
So 3309-75-9 is a valid CAS Registry Number.

InChI:InChI=1/C4H11ClO7P2/c1-8-13(6,9-2)12-14(7,10-3)11-4-5/h4H2,1-3H3

3309-75-9SDS

SAFETY DATA SHEETS

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.Identification

1.1 GHS Product identifier

Product name	[chloromethoxy(methoxy)phosphoryl] dimethyl phosphate

1.2 Other means of identification

Product number	-
Other names	ENT 25,561

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:3309-75-9 SDS

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