Isophthaloyl chloride

  • 1,3-Benzenedicarbonyl dichloride
  • Isophthalic acid dichloride
  • Isophthalic acid chloride
  • m-Benzenedicarbonyl chloride
  • m-Phthaloyl chloride
Formula
C6H4-1,3-(COCl)2
Structure
Description
Crystalline solid, lachrymator.
Uses
Intermediate, dyes, synthetic fibers, resins, films, protective coatings, laboratory reagent.

Registry Numbers and Inventories.
CAS
99-63-8
EC (EINECS/ELINCS)
202-774-7
EC Class
harmful, irritant
R 21 34
S 26 36/37/39 45
RTECS
NT2625000
RTECS class
Primary Irritant
UN (DOT)
1759
Beilstein/Gmelin
4701926
Beilstein Reference
5-18-01-00014
Swiss Giftliste 1
G-2304
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C8H4Cl2O2
Formula mass
203.03
Melting point, °C
42 - 45
Boiling point, °C
276
Vapor pressure, mmHg
0.03
Vapor density (air=1)
6.9
Density
1.3880 g/cm3 (17C)
Solubility in water
Reacts
Refractive index
1.570 (47 C)

Hazards and Protection.
Storage
Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances. Corrosives area. Store protected from moisture.
Handling
Minimize dust generation and accumulation. Keep container tightly closed. Do not get on skin or in eyes. Do not ingest or inhale. Use with adequate ventilation. Do not allow contact with water. Discard contaminated shoes. Keep from contact with moist air and steam.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation. Do not get water inside containers.
Disposal code
11
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Alcohols, strong oxidizing agents, strong bases, methanol.
Decomposition
Hydrogen chloride, phosgene, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
180
Upper exp. limit, %
6.9
Lower exp. limit, %
1.5
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Do NOT use water directly on fire. Use foam, dry chemical, or carbon dioxide. Do NOT get water inside containers.
Fire potential
Slight hazard - ignite in flame or intense heat.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
3
 
Flammability
1
 
 
Reactivity
0
 

Health.
Poison_Class
4
Exposure effects
   Ingestion
May cause severe and permanent damage to the digestive tract. Causes gastrointestinal tract burns.
   Inhalation
Causes chemical burns to the respiratory tract. Inhalation of dust may cause respiratory tract irritation.
   Skin
Causes skin burns. May cause severe irritation and possible burns. May be harmful if absorbed through the skin.
   Eyes
Causes eye burns.

First aid
 
   Ingestion
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
   Skin
Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes.
   Eyes
Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation is required (at least 30 minutes).

Transport.
UN number
1759
Response guide
Hazard class
8
Packing Group
I; II; III
 
HS Code
2917 39 40