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DIQUAT DIBROMIDE
ICSC: 1363
Peer-Review Status: 16.10.2001 Validated
1,1'-Ethylene-2,2'-bipyridyllium dibromide
6,7-Dihydrodipyridol[1,2-a:2',1-c]pyrazinedium dibromide
9,10-Dihydro-8a-10a-diazoniaphenanthrene dibromide 
CAS #: 85-00-7 RTECS #: JM5690000
UN #: 2781
EC #: 613-089-00-1
EINECS #: 201-579-4
    Formula: C12H12N2Br2
Molecular mass: 344.1

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE 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. 
EXPLOSION      
 
EXPOSURE   PREVENT DISPERSION OF DUST! STRICT HYGIENE!  IN ALL CASES CONSULT A DOCTOR! 
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
PACKAGING & 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.  Do not transport with food and feedstuffs. 
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 
UN Classification
UN Hazard Class: 6.1; UN Pack Group: III 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-61GT7-III.  Provision to contain effluent from fire extinguishing. Well closed. Separated from food and feedstuffs. 

IMPORTANT DATA
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. 

Occupational exposure limits
TLV (inhalable fraction): 0.5mg/m³ as TWA; (skin); A4 (not classifiable as a human carcinogen); (ACGIH 2004).
TLV (respirable fraction): 0.1mg/m³ as TWA; (skin); A4 (not classifiable as a human carcinogen); (ACGIH 2004). 

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

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 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. 

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


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
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)  
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.
Card has been partly updated in October 2004.
See sections Occupational Exposure Limits, EU classification, Emergency Response. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations