Bromoxynil

  • 3,5-Dibromo-4-hydroxybenzonitrile
  • 2,6-Dibromo-4-cyanophenol
  • Bromoxynil
  • Toplan
Formula
C7H3Br2NO
Structure
Description
Colorless solid.
Uses
Herbicide

Registry Numbers and Inventories.
CAS
1689-84-5
EC (EINECS/ELINCS)
216-882-7
EC Index Number
608-006-00-0
EC Class
Toxic for reproduction Category 3; Toxic
R 25 63
S 36/37 45
RTECS
DI3150000
RTECS class
Agricultural Chemical and Pesticide
UN (DOT)
2811
Merck
13,1426
Beilstein/Gmelin
2364039
Beilstein Reference
4-10-00-00475
EPA OPP
35301
Swiss Giftliste 1
G-1304
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed

Properties.
Formula
C7H3Br2NO
Formula mass
276.91
Melting point, °C
191 - 192
Boiling point, °C
341
Vapor pressure, mmHg
5E-8
Critical temperature
578
Critical pressure
56.1
Solubility in water
130 mg/L
pKa/pKb
3.86 (pKa)
Partition coefficient, pKow
2.8

Hazards and Protection.
Storage
Keep containers tightly closed. Store in a cool, dry area away from incompatible substances.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Minimize dust generation and accumulation. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale. Use only in a chemical fume hood.
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 and clothing 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
Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents, strong bases.
Decomposition
Nitrogen oxides, carbon monoxide, carbon dioxide, cyanide fumes, hydrogen bromide, bromine fumes.

Fire.
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. To extinguish fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
0
 
 
Reactivity
0
 

Health.
Poison_Class
3
Exposure effects
Chronic exposure may lead to weight loss, fever, emesis, and myalgia.
   Ingestion
Harmful if swallowed. May cause gastrointestinal irritation with nausea, vomiting and diarrhea. The toxicological properties of this substance have not been fully investigated.
   Inhalation
May cause respiratory tract irritation. May cause irritation of the mucous membranes.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. Do not use mouth-to-mouth respiration if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device.
   Skin
Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
2811
Response guide
Hazard class
6.1
Packing Group
I; II; III