503-38-8

Name Diphosgene
CAS 503-38-8
EINECS(EC#) 207-965-9
Molecular Formula C2Cl4O2
MDL Number MFCD00015553
Molecular Weight 197.83
MOL File 503-38-8.mol
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Chemical Properties

Appearance clear colorless liquid
Melting point  -57 °C
Boiling point  20 °C10 mm Hg(lit.)
density  1.64
vapor pressure  13 hPa ( 20 °C)
refractive index  n20/D 1.458
Fp  >110°C
storage temp.  2-8°C
solubility  Chloroform (Soluble), Ethyl Acetate (Sparingly)
form  Liquid
color  Clear colorless
Water Solubility  may decompose
Sensitive  Moisture Sensitive
Merck  14,3334
BRN  970225
Stability: Hygroscopic, Moisture Sensitive
InChI 1S/C2Cl4O2/c3-1(7)8-2(4,5)6
InChIKey HCUYBXPSSCRKRF-UHFFFAOYSA-N
SMILES ClC(=O)OC(Cl)(Cl)Cl
CAS DataBase Reference 503-38-8(CAS DataBase Reference)
NIST Chemistry Reference Trichloromethyl chloroformate(503-38-8)
EPA Substance Registry System 503-38-8(EPA Substance)
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Safety Data

Symbol(GHS)  Corrosion (GHS05)Skull and Crossbones (GHS06)
GHS05,GHS06
Signal word  Danger
Hazard statements  H302-H314-H330
Precautionary statements  P280-P301+P312+P330-P301+P330+P331-P303+P361+P353-P304+P340+P310-P305+P351+P338
Hazard Codes  T+,Xi
Risk Statements 
R26/28:Very Toxic by inhalation and if swallowed .
R34:Causes burns.
R26/27/28:Very Toxic by inhalation, in contact with skin and if swallowed .
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S28:After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S36:Wear suitable protective clothing .
RIDADR  UN 3277 6.1/PG 2
WGK Germany  3
RTECS  LQ7350000
F  8-10-19
TSCA  Yes
HazardClass  6.1
PackingGroup  II
HS Code  29159000
Storage Class 6.1B - Non-combustible acute toxic Cat. 1 and 2
very toxic hazardous materials
Hazard Classifications Acute Tox. 2 Inhalation
Acute Tox. 4 Oral
Skin Corr. 1B
Safety Profile
Low toxicity by inhalation. A corrosive liquid. When heated to decomposition it emits toxic vapors of Cl-.
Hazardous Substances Data 503-38-8(Hazardous Substances Data)
Toxicity
LC100 in rabbits (10-20 minutes exposure to vapor): 0.9 mg/l air (Klika, Mysliveckova)

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