CAS 503-38-8: Diphosgene
Description:Diphosgene, with the CAS number 503-38-8, is a chemical compound that serves primarily as an intermediate in organic synthesis and as a reagent in the production of various pharmaceuticals and agrochemicals. It is a colorless to pale yellow liquid with a sweet odor, reminiscent of that of chloroform. Diphosgene is classified as a toxic substance, and it is known to be a potent respiratory irritant, posing significant health risks upon inhalation or skin contact. Its chemical structure consists of two carbonyl groups linked by a carbon atom, making it a derivative of phosgene. Due to its toxicity, diphosgene must be handled with extreme caution in well-ventilated areas, using appropriate personal protective equipment. In terms of stability, it is relatively stable under normal conditions but can decompose when exposed to moisture or high temperatures. Overall, diphosgene is an important compound in synthetic chemistry, but its hazardous nature necessitates strict safety protocols during its use and handling.
Formula:C2Cl4O2
InChI:InChI=1S/C2Cl4O2/c3-1(7)8-2(4,5)6
InChI key:InChIKey=HCUYBXPSSCRKRF-UHFFFAOYSA-N
SMILES:O=C(Cl)OC(Cl)(Cl)Cl
- Synonyms:
- Carbonochloridic acid, trichloromethyl ester
- Chloroformic acid trichloromethyl ester
- Diphosgen
- Formic acid, chloro-, trichloromethyl ester
- Methanol, trichloro-, chloroformate
- Trichloromethyl Chlorocarbonate
- Trichloromethyl carbonochloridate
- Trichloromethyl chloroformate
- Diphosgene
Brand | Product data | Purity | Price range | Estimated delivery |
---|---|---|---|---|
![]() | Trichloromethyl chloroformate, 98% REF: 02-A17444CAS: 503-38-8 | 98% | To inquire | Thu 25 Sep 25 |
![]() | Trichloromethyl Chloroformate REF: TR-T773880CAS: 503-38-8 | - - - | 95.00 € | Tue 14 Oct 25 |
![]() | Trichloromethyl chloroformate REF: 10-F046973CAS: 503-38-8 | 99.0% | To inquire | Tue 14 Oct 25 |
![]() | Diphosgene REF: 3D-FD03652CAS: 503-38-8 | Min. 95% | To inquire | Wed 12 Nov 25 |
![]() | Trichloromethyl chloroformate (Diphosgene) REF: 7W-GK1925CAS: 503-38-8 | - - - | - - - | Discontinued product |
![]() | Diphosgene, 99% REF: AC-24331CAS: 503-38-8 | 99% | - - - | Discontinued product |

Trichloromethyl chloroformate, 98%
Ref: 02-A17444
10g | To inquire | ||
50g | To inquire | ||
250g | To inquire |

Trichloromethyl Chloroformate
Controlled ProductRef: TR-T773880
10g | 95.00 € |

Trichloromethyl chloroformate
Ref: 10-F046973
5g | 39.00 € | ||
25g | To inquire | ||
100g | 325.00 € |

Diphosgene
Ref: 3D-FD03652
100g | 874.00 € | ||
250g | 1,050.00 € |

Ref: 7W-GK1925
Undefined size | Discontinued | Request information |

Diphosgene, 99%
Ref: AC-24331
10ml | Discontinued | Request information | |
100ml | Discontinued | Request information |