Triallate

  • S-(2,3,3-Trichloroallyl) diisopropylthiocarbamate
  • S-(2,3,3-Trichloro-2-propenyl) bis(1-methylethyl)carbamothioate
Formula
C10H16Cl3NOS
Structure
Description
Colorless crystals or oily amber liquid.
Uses
Herbicide.

Registry Numbers and Inventories.
CAS
2303-17-5
EC (EINECS/ELINCS)
218-962-7
EC Index Number
006-039-00-X
EC Class
Harmful; Sensitising; Dangerous for the Environment
RTECS
EZ8575000
RTECS class
Agricultural Chemical and Pesticide; Mutagen
UN (DOT)
2757
Merck
12,9726
Beilstein/Gmelin
1875853
RCRA
U389
EPA OPP
78802
Swiss Giftliste 1
G-2960
Austrailia AICS
Listed
New Zealand
Listed

Properties.
Formula
C10H16Cl3NOS
Formula mass
304.67
Melting point, °C
29-30
Boiling point, °C
322
Vapor pressure, mmHg
0.0003 (25 C)
Density
1.273 g/cm3 (25 C)
Solubility in water
Insoluble
Partition coefficient, pKow
4.6
Heat of vaporization
56.4 kJ/mol

Hazards and Protection.
Storage
Store in well-ventilated area, above freezing.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear rubber gloves and goggles when handling.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Cover solids with a plastic sheet to prevent dissolving in rain or fire fighting water. Water spill: Use natural barriers or oil spill control booms to limit spill travel. Use natural deep water pockets, excavated lagoons, or sand bag barriers to trap material at bottom. Use mechanical dredges or lifts to remove immobilized masses of pollutants and precipitates.
Stability
Indefinitely stable, insensitive to light or heat stable under normal storage conditions. Hydrolyzed by strong acids and alkalis.
Incompatibilities
Incompatible with strong acids and bases, and especially
Decomposition
When heated to decomposition it emits very toxic fumes of hydrogen chloride, nitrogen oxides and sulfur oxides.

Fire.
Flash Point,°C
95
Fire fighting
Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Use water in flooding quantities as fog. Use alcohol foam, dry chemical or carbon dioxide.
Fire potential
Non-Combustible
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Poison_Class
4
Exposure effects
Exposure to thiram or mbdt-carb (based on animal studies) may cause weakness, ataxia, ascending paralysis and hypothermia. Peripheral neuropathy (pain, numbness and weakness of the extremities) has been noted following exposure to thiuram (the ethyl analog of thiram). No adverse reproductive effects (testicular parameters) in male mice were observed following methyl thiophanate doses up to 1000 mg/kg orally for 5 consecutive days (Traina et al, 1998). Maternal toxicity was evident in female rats.
   Ingestion
Nausea, vomiting and diarrhea may occur.
   Inhalation
Respiratory failure, requiring ventilatory support, has been reported following ingestions.
   Skin
Exposure to dusts, sprays, solutions, wettable powder suspensions or emulsions of these agents may lead to skin and mucous membrane irritation.
   Eyes
See Inhalation.

First aid
 
   Ingestion
Ipecac induced vomiting is not recommended because of the potential for cns depression and seizures. Consider after ingestion of a potentially life-threatening amount of poison if it can be performed soon after ingestion (generally within 1 hour). Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents. Intravenous fluids may be useful in restoring extracellular fluid volume following severe vomiting and diarrhea. Oxygen therapy is effective in relieving the distress of antabuse-like reactions rarely associated with exposure to thiram and possibly the mbdt-carb compounds. No specific antidotes are available for poisoning by these compounds. Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method 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. Administer oxygen if breathing is difficult.
   Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
2757
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
Std. Transport #
4921586