phosgene

CAS No. 75-44-5

Formula: CCl2O
Basic Info

Phosgene is the chemical compound with the formula COCl2. This colorless gas gained infamy as a chemical weapon during World War I where it was responsible for about 85% of the 100,000 deaths caused by chemical weapons. It is also a valued industrial reagent and building block in synthesis of pharmaceuticals and other organic compounds. In low concentrations, its odor resembles freshly cut hay or grass. In addition to its industrial production, small amounts occur from the breakdown and the combustion of organochlorine compounds, such as those used in refrigeration systems. The chemical was named by combining the Greek words "phos" (meaning light) and "genesis" (birth); it does not mean it contains any phosphorus (cf. phosphine).

Formula
CCl2O
Molecular Weight
98.9161
Exact Mass
97.9326
LogP
1.584
PSA
17.07
Synonyms

Phlsgene

Phosgenegas

Fosgen

carbonic dichloride

dichloro-ketone

carbonyl chloride

combatgas

Phosgen

thionyl chloride

Fosgene

Fosgeen

PHOSGENE

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Properties
Appearance & Physical State
colourless gas
Density
1.523 g/cm3
Boiling Point
8.2ºC at 760 mmHg
Melting Point
-118ºC
Flash Point
4ºC
Refractive Index
1.419
Storage Condition
2-8ºC
Vapor Pressure
1180 mm Hg ( 20 °C)
Safety Info
RTECS
SY5600000
Safety Statements
9-26-36/37/39-45-62-28
WGK Germany
2
Risk Statements
R26; R34; R67; R65; R63; R48/20; R11
HS Code
2812103000
RIDADR
UN 3384
Hazard Class
2.3
Caution Statement
P210; P261; P280; P301 + P310; P305 + P351 + P338; P310
Hazard Codes
Spectrum
NMR Spectrum 13C NMR : Predict
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Mass Spectrum Mass spectrum (electron ionization)
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Analysis Methods
Normal alkane RI, non-polar column, temperature ramp
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Column Shape
Capillary
Active Phase(℃)
OV-101
Retention index
416.
Temperature Control
Method
temperature ramp
Comments
25. m/0.20 mm/0.10 μm, N2/He, 6. K/min; T<sub>start</sub>: 50. C; T<sub>end</sub>: 250. C
Reference
Zenkevich, I.G.Experimentally measured retention indices.2005.
Normal alkane RI, non-polar column, custom temperature program
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Column Shape
Capillary
Active Phase(℃)
Porapack Q
Retention index
425.
Temperature Control
Method
custom temperature program
Comments
Program: not specified
Reference
Zenkevich, I.G.Rodin, A.A.Gas chromatographic identification of some volatile toxic fluorine containing compounds by precalculated retention indicesJ. Ecol. Chem. (Rus.)2004, 13, 1, 22-28.

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