2,5-Dichlorophenyl isocyanate

  • 1,4-Dichloro-2-phenyl isocyanate
  • 1,4-Dichloro-2-isocyanatobenzene
Formula
C7H3Cl2NO
Structure
Description
White solid.

Registry Numbers and Inventories.
CAS
5392-82-5
EC (EINECS/ELINCS)
226-396-7
R 23/25 36/37/38 42
S 23 26 36/37/39 45
UN (DOT)
2250
Beilstein/Gmelin
388960
Beilstein Reference
4-12-00-01254
Canada DSL/NDSL
NDSL
US TSCA
Listed

Properties.
Formula
C7H3Cl2NO
Formula mass
188.01
Melting point, °C
19
Boiling point, °C
242
Vapor pressure, mmHg
0.04 (25 C)
Solubility in water
Insoluble
Partition coefficient, pKow
3.77
Heat of vaporization
47.9 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry location in a tightly sealed container.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear protective gloves and clothing and safety goggles.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
ELIMINATE all ignition sources and groumd all equipment used when handling the product. Do not touch spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. A vapor suppressing foam may be used to reduce vapors. FOR CHLOROSILANES, use AFFF alcohol-resistant medium expansion foam to reduce vapors. DO NOT GET WATER on spilled substance or inside containers. Cover with DRY earth, DRY sand, or other non-combustible material followed with plastic sheet to minimize spreading or contact with rain. Use clean non-sparking tools to collect material and place it into loosley covered plastic containers for later disposal.
Stability
No data.
Incompatibilities
Keep away from water, alcohols, strong bases, amines, acids, strong oxidizing agents and heat sources.

Fire.
Flash Point,°C
92
Fire fighting
Extinguish fire using carbon dioxide or dry chemical powder. Wear a SCBA and protective clothings.
Fire potential
Combustible material: may burn but does not ignite readily.
Hazards
Substance will react with water (some violently) releasing flammable, toxic or corrosive gases and runoff. When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapors may travel to source of ignition and flash back. Contact with metals may evolve flammable hydrogen gas.
Combustion products
Emits toxic fumes under fire conditions.

Health.
Exposure effects
   Ingestion
Toxic if swallowed.
   Inhalation
Toxic if inhaled. Causes irritation and possible sensitization.
   Skin
Causes irritation and possible sensitization.
   Eyes
Causes irritation. Lachrymator.

First aid
 
   Ingestion
If swallowed, wash out mouth with water, provided that person is conscious.
   Inhalation
Move to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
2250
Response guide
Hazard class
6.1
Packing Group
II