Chloranil

  • Tetrachloro-p-quinone
  • Tetrachloro-p-benzoquinone
  • 2,3,5,6-Tetrachloro-p-Benzoquinone
  • 2,3,5,6-Tetrachloro-2,5-Cyclohexadiene-1,4-dione
Formula
1-O=C6Cl4-4=O
Structure
Description
Yellow powder with a slight odor.
Uses
In manufacture of chloranil electrodes for ph measurements, to manufacture compound used in dye industry, as reagent for pamaquine (plasmochin) in urine (blue color). Fungicide.

Registry Numbers and Inventories.
CAS
118-75-2
EC (EINECS/ELINCS)
204-274-4
EC Index Number
602-066-00-1
EC Class
Irritant; Dangerous for the Environment
R 36/38 50/53
S 37 60 61
RTECS
DK6825000
RTECS class
Agricultural Chemical and Pesticide; Tumorigen; Drug; Mutagen
UN (DOT)
3077
Merck
13,2088
Beilstein/Gmelin
393006
Beilstein Reference
4-07-00-02083
EPA OPP
79301
Swiss Giftliste 1
G-1389
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C6Cl4O2
Formula mass
245.88
Melting point, °C
194
Boiling point, °C
270
Vapor pressure, mmHg
0.007 (25 C)
Vapor density (air=1)
8.5
Density
1.97 g/cm3 (20 C)
Solubility in water
Insoluble
Partition coefficient, pKow
1.39
Heat of vaporization
50.8 kJ/mol
Heat of combustion
-2173 kJ/mol

Hazards and Protection.
Storage
Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from light.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. Store protected from light.
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 gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
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
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.
Disposal code
3
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Hydrogen chloride, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Autoignition, °C
> 400
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. Runoff from fire control or dilution water may cause pollution. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Use agent most appropriate to extinguish fire.
Fire potential
This material is probably combustible.
Health
2
 
Flammability
0
 
 
Reactivity
0
 

Health.
Poison_Class
4
Exposure effects
Prolonged or repeated exposure can cause psychic abnormalities such as anxiety, depression and excitability.
   Ingestion
May cause digestive tract disturbances. Ingestion of large amounts may cause CNS depression. Ingestion of large amounts may cause pain, constipation or diarrhea.
   Inhalation
May cause respiratory tract irritation.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
Never give anything by mouth to an unconscious person. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water. Get medical aid if irritation or symptoms occur.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
   Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Get medical aid if symptoms occur.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. If irritation develops, get medical aid.

Transport.
UN number
3077
Response guide
HS Code
2914 70 90