Tetramethrin

  • 3,4,5,6-Tetrahydrophthalimidomethyl (1RS)-cis-trans-chrysanthemate
  • (1,3,4,5,6,7-Hexahydro-1,3-dioxo-2H-isoindol-2-yl)methyl 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate
Formula
C19H25NO4
Structure
Description
Colorless crystals with slight odor.
Uses
Insecticide.

Registry Numbers and Inventories.
CAS
7696-12-0
EC (EINECS/ELINCS)
231-711-6
RTECS
GZ1730000
RTECS class
Agricultural Chemical and Pesticide; Mutagen; Primary Irritant
Merck
12,9362
Beilstein/Gmelin
1547173
EPA OPP
69003
Swiss Giftliste 1
G-55299
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C19H25NO4
Formula mass
331.41
Melting point, °C
65
Boiling point, °C
140 (12 torr)
Vapor pressure, mmHg
<1
Density
1.108 g/cm3 (20 C)
Solubility in water
Insoluble
Refractive index
1.5175 (20 C)
Partition coefficient, pKow
4.73

Hazards and Protection.
Storage
Ventilate well. Store in closed drum in a cool, dry place. 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
No data.
Incompatibilities
Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products.
Decomposition
When heated to decomposition it emits toxic fumes of nitrogen oxides.

Fire.
Fire fighting
Use carbon dioxide, foam, or dry chemical on fires involving pyrethroids.

Health.
Poison_Class
4
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.
   Eyes
A stuffy, runny nose and scratchy throat following inhalational exposure may be noted.

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.