Dichloro-(2-chloroethyl)-phosphine, also known as bis(2-chloroethyl)phosphorus dichloride or DCEP, is a highly toxic organophosphorus compound with the chemical formula C2H4Cl3P. It is a colorless, oily liquid with a pungent odor and is soluble in organic solvents. DCEP is primarily used as a chemical warfare agent, specifically as a precursor in the synthesis of mustard gas. It is highly reactive and can cause severe health issues, including respiratory distress, skin burns, and damage to the eyes and mucous membranes upon exposure. Due to its hazardous nature, handling and storage of DCEP require strict safety measures and specialized equipment.

691-51-0

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Basic information
1. Product Name: dichloro-(2-chloroethyl)-phosphine
2. Synonyms: dichloro-(2-chloroethyl)-phosphine
3. CAS NO:691-51-0
4. Molecular Formula:
5. Molecular Weight: 165.387
6. EINECS: N/A
7. Product Categories: N/A
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: dichloro-(2-chloroethyl)-phosphine(CAS DataBase Reference)
10. NIST Chemistry Reference: dichloro-(2-chloroethyl)-phosphine(691-51-0)
11. EPA Substance Registry System: dichloro-(2-chloroethyl)-phosphine(691-51-0)
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: 691-51-0(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 691-51-0 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,9 and 1 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 691-51:
(5*6)+(4*9)+(3*1)+(2*5)+(1*1)=80
80 % 10 = 0
So 691-51-0 is a valid CAS Registry Number.

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691-51-0Downstream Products

690-12-0 (2-chloroethyl)phosphonic dichloride

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