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Phosphonous acid, ethyl-, also known as ethylphosphonous acid or ethylphosphonite, is an organophosphorus compound with the chemical formula C2H7O2P. It is a colorless liquid that is soluble in water and has a pungent odor. Ethylphosphonous acid is an intermediate in the synthesis of various organophosphorus compounds, such as pesticides, flame retardants, and pharmaceuticals. It is also used as a reagent in organic synthesis and as a stabilizer for chlorinated solvents. The compound is produced by the reaction of phosphorus trichloride with ethanol, and it is important to handle it with care due to its potential toxicity and reactivity.

4736-97-4

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Basic information
1. Product Name: Phosphonous acid,ethyl-
2. Synonyms:
3. CAS NO:4736-97-4
4. Molecular Formula:
5. Molecular Weight: 94.0501
6. EINECS: N/A
7. Product Categories: N/A
8. Mol File: 4736-97-4.mol
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: N/A
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: Phosphonous acid,ethyl- (CAS DataBase Reference)
10. NIST Chemistry Reference: Phosphonous acid,ethyl- (4736-97-4)
11. EPA Substance Registry System: Phosphonous acid,ethyl- (4736-97-4)
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: 4736-97-4(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 4736-97-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,7,3 and 6 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 4736-97:
(6*4)+(5*7)+(4*3)+(3*6)+(2*9)+(1*7)=114
114 % 10 = 4
So 4736-97-4 is a valid CAS Registry Number.

4736-97-4SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name	ethyl phosphinic acid

1.2 Other means of identification

Product number	-
Other names	ethyl phosphonous acid

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:4736-97-4 SDS

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