1,1'-Ethylene-2,2'-bipyridyllium dibromide
6,7-Dihydrodipyridol1,2-a2',1-cpyrazinedium dibromide
9,10-Dihydro-8a-10a-diazoniaphenanthrene dibromide
C12H12N2Br2
Molecular mass: 344.1
ICSC # 1363
CAS # 85-00-7
RTECS # JM5690000
UN # 2781
EC # 613-089-00-1
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Not combustible.
Liquid formulations containing organic solvents may be flammable.
Gives off irritating or toxic fumes (or gases) in a fire.
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In case of fire in the surroundings: use appropriate extinguishing media.
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Explosion
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Exposure
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PREVENT DISPERSION OF DUST!
STRICT HYGIENE!
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IN ALL CASES CONSULT A DOCTOR!
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•Inhalation
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Cough.
Sore throat.
Nosebleeds.
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Local exhaust or breathing protection.
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Fresh air, rest.
Refer for medical attention.
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•Skin
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Redness.
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Protective gloves.
Protective clothing.
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First rinse with plenty of water, then remove contaminated clothes and rinse again.
Refer for medical attention.
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•Eyes
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Redness.
Pain.
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Safety goggles,
or eye protection in combination with breathing protection.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Nausea.
Vomiting.
Ulcerations in the mouth.
Abdominal pain.
Diarrhoea.
(Further see Inhalation).
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Do not eat, drink, or smoke during work.
Wash hands before eating.
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Rinse mouth.
Give plenty of water to drink,
or bentonite clay in water, or
give a slurry of activated charcoal in water to drink.
Induce vomiting (ONLY IN CONSCIOUS PERSONS!).
Refer for medical attention.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting.
Carefully collect remainder,
then remove to safe place.
Do NOT let this chemical enter the environment.
Personal protection: P3 filter respirator for toxic particles.
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Provision to contain effluent from fire extinguishing.
Well closed.
Separated from food and feedstuffs.
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Do not transport with food and feedstuffs.
T+ symbol
N symbol
R: 22-26-36/37/38-43-48/25-50/53
S: 1/2-28-36/37/39-45-60-61
UN Hazard Class: 6.1
UN Packing Group: III
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Important Data
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Physical State; Appearance:
COLOURLESS
TO YELLOW
CRYSTALS
Physical Dangers:
Chemical Dangers:
The substance decomposes
on heating at 335°C,
producing
toxic fumes
including
nitrogen oxides
and
hydrogen bromide
.
Occupational Exposure Limits:
TLV: (as Diquat, inhalable fraction) 0.5 mg/m3 as TWA; TLV: (as Diquat, respirable fraction) 0.1 mg/m3 as TWA; (skin); A4; (ACGIH 2004).
OSHA PEL: none
NIOSH REL: TWA 0.5 mg/m3
NIOSH IDLH: N.D. See: IDLH INDEX
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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 sprayingorwhen dispersed.
Effects of Short-Term Exposure:
The substance
is irritating to
the eyes
,
the skin
and
the respiratory tract
.
The substance may cause effects on the
kidneys
,
liver
,
cardiovascular system
and
gastrointestinal tract
, resulting in
impaired functions
and
tissue lesions
.
Exposure to high concentrations may result in death.
Effects of Long-Term or Repeated Exposure:
The substance may have effects on the eyes
, resulting in cataract.
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Physical
Properties
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Decomposes below melting point at 335°C
Density: 1.2
g/cm3
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Solubility in water, g/100 ml at 20°C: 70
Vapour pressure, Pa at °C: <0.0001
Octanol/water partition coefficient as log Pow: -4.60 at 20 °C
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Environmental
Data
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The substance is harmful to aquatic organisms.
This substance does enter the environment under normal use. Great care, however, should be given to avoid any additional release, e.g. through inappropriate disposal.
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N O T E S
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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.
Transport Emergency Card: TEC (R)-61GT7-III
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ADDITIONAL INFORMATION
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ICSC: 1363
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DIQUAT DIBROMIDE
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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