Tralomethrin

  • (S)-alpha-Cyano-3-phenoxybenzyl (1R)-cis-2,2-dimethyl-3-tetrabromoethyl]cyclopropanecarboxylate
  • Cyano(3-phenoxyphenyl)methyl 2,2-dimethyl-3-(1,2,2,2-tetrabromoethyl)cyclopropanecarboxylate
  • (S)-alpha-Cyano-3-phenoxybenzyl (1R,3S)-2,2-dimethyl-3-tetrabromoethyl]cyclopropanecarboxylate.
Formula
C22H19Br4NO3
Structure
Description
Yellow orange resinoid.
Uses
Insecticide.

Registry Numbers and Inventories.
CAS
66841-25-6
EC (EINECS/ELINCS)
266-493-1
RTECS
GZ2009500
RTECS class
Agricultural Chemical and Pesticide; Primary Irritant
Merck
12,9700
Beilstein/Gmelin
8444068
EPA OPP
128822
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C22H19Br4NO3
Formula mass
665.01
Melting point, °C
138 - 148
Boiling point, °C
594
Vapor pressure, mmHg
4E-11 (25 C)
Density
1.70 g/cm3 (20 C)
Solubility in water
80 ug/L (20 C)
Partition coefficient, pKow
8.54
Heat of vaporization
88.6 kJ/mol

Hazards and Protection.
Storage
Pyrethrins with piperonyl butoxide topical preparations should be stored in well-closed containers at a temperature less than 40C, preferably between 15-30C.
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
Employees should be provided with and required to use dust- and splash-proof safety goggles where pyrethroids may contact the eyes. Pyrethroids.
Respirators
Use NIOSH/MSHA approved respirator appropriate for exposure of concern.
Small spills/leaks
Evacuate area and ventilate. Wear protective equipment. If required, use an inert absrobent. Sweep up and place in an appropriate container for disposal. Wash contaminated surfaces.
Stability
Stable for 6 months at 50 C. Acidic media reduce hydrolysis and epimerization. Are stable for long periods in water-based aerosols where emulsifiers give neutral water systems.
Incompatibilities
Avoid contact with strong oxidizers. Incompatible with lime and ordinary soaps because acids and alkalies speed up processes of hydrolysis.

Fire.
Flash Point,°C
313
Fire fighting
Use carbon dioxide, foam, or dry chemical on fires involving pyrethroids.

Health.
Exposure effects
   Ingestion
Nausea, vomiting and abdominal pain commonly occur and develop within 10 to 60 minutes following ingestion.
   Inhalation
Hypersensitivity reactions characterized by pneumonitis, cough, dyspnea, wheezing, chest pain, and bronchospasm may occur. Rare cases of respiratory failure and cardiopulmonary arrest have been reported.
   Skin
Irritant and contact dermatitis may develop. Erythema which mimics sunburn has also been noted after prolonged repeated exposure.

First aid
 
   Ingestion
Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended.
   Inhalation
If symptoms develop, move individual away from exposure and into fresh air. If symptoms persist, seek medical attention. If breathing is difficult, administer oxygen. Keep person warm and quiet; seek immediate medical attention.
   Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists. Vitamin e topical application is highly effective in relieving paresthesias.
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Transport.