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DIQUAT DIBROMIDEICSC: 1363
October 2001
CAS #: 85-00-71,1'-Ethylene-2,2'-bipyridyllium dibromide
6,7-Dihydrodipyridol[1,2-a:2',1-c]pyrazinedium dibromide
9,10-Dihydro-8a-10a-diazoniaphenanthrene dibromide
UN #: 2781
EINECS #: 201-579-4

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Not combustible. Liquid formulations containing organic solvents may be flammable. Gives off irritating or toxic fumes (or gases) in a fire.        In case of fire in the surroundings, use appropriate extinguishing media.   

 PREVENT DISPERSION OF DUST! STRICT HYGIENE! IN ALL CASES CONSULT A DOCTOR! 
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Cough. Sore throat. Nosebleeds.  Use local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin Redness.  Protective gloves. Protective clothing.  First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again. Refer for medical attention . 
Eyes Redness. Pain.  Wear safety goggles or eye protection in combination with breathing protection.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Nausea. Vomiting. Ulceration in the mouth. Abdominal pain. Diarrhoea. Further see Inhalation.  Do not eat, drink, or smoke during work. Wash hands before eating.  Rinse mouth. Give one or two glasses of water to drink. Give a slurry of activated charcoal in water to drink. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 6.1; UN Pack Group: III 

STORAGE
Provision to contain effluent from fire extinguishing. Well closed. Separated from food and feedstuffs. 
PACKAGING
Do not transport with food and feedstuffs. 
DIQUAT DIBROMIDE ICSC: 1363
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS-TO-YELLOW CRYSTALS. 

Physical dangers
 

Chemical dangers
Decomposes at 335°C. This produces toxic fumes including nitrogen oxides and hydrogen bromide. 

Formula: C12H12N2Br2
Molecular mass: 344.1
Decomposes at 335°C
Density: 1.2 g/cm³
Solubility in water, g/100ml at 20°C: 70
Vapour pressure, Pa at ?°C: <0.0001
Octanol/water partition coefficient as log Pow: -4.60 (20°C) 


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of its aerosol, through the skin and by ingestion. 

Effects of short-term exposure
The substance is irritating to the eyes, skin and respiratory tract. The substance may cause effects on the kidneys, liver, cardiovascular system and gastrointestinal tract. This may result in impaired functions and tissue lesions. Exposure to high concentrations could cause death. 

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly on spraying or when dispersed, especially if powdered. 

Effects of long-term or repeated exposure
The substance may have effects on the eyes. This may result in cataract. 


Occupational exposure limits
TLV: (inhalable fraction): 0.5 mg/m3, ppm, as TWA; (skin); A4 (not classifiable as a human carcinogen); (respirable fraction): 0.1 mg/m3, ppm, as TWA; (skin); A4 (not classifiable as a human carcinogen) 

ENVIRONMENT
The substance is harmful to aquatic organisms. This substance does enter the environment under normal use. Great care, however, should be taken to avoid any additional release, for example through inappropriate disposal. 

NOTES
The toxicological information is the same for diquat dibromide monohydrate (CAS 6385-62-2) and diquat (CAS 2764-72-9).
Do NOT take working clothes home.
Carrier solvents used in commercial formulations may change physical and toxicological properties.
If the substance is formulated with solvents also consult the ICSCs of these materials. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: T+, N; R: 22-26-36/37/38-43-48/25-50/53; S: (1/2)-28-36/37/39-45-60-61 

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       Toxicological Abbreviations