trans-(+)-Chrysanthemic acid

  • (1R-trans)-Chrysanthemic acid
  • Cyclopropanecarboxylic acid, 2,2-dimethyl-3-(2-methylpropenyl)-, (1R,3R)-(+)
  • Cyclopropanecarboxylic acid, 2,2-dimethyl-3-(2-methyl-1-propenyl)-, (1R-trans)-
  • (+)-(1R,3R)-2,2-Dimethyl-3-(2-methylpropenyl)cyclopropanecarboxylic acid
Formula
C10H16O2
Structure
Description
Colorless liquid.
Uses
Pyrethroid insecticide.

Registry Numbers and Inventories.
CAS
4638-92-0
EC (EINECS/ELINCS)
225-067-5
RTECS
GZ1280000
RTECS class
Drug
Beilstein/Gmelin
2043419
Beilstein Reference
4-09-00-00169
Canada DSL/NDSL
NDSL
US TSCA
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C10H16O2
Formula mass
168.12
Melting point, °C
17-21
Boiling point, °C
80 (0.5 torr)
Refractive index
1.476 (20 C)
pKa/pKb
5.31 (pKa)

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a dry area. Refrigerator (approx 4 C).
Handling
Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
Protection
Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear a chemical apron.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: Use foam, dry chemical, or carbon dioxide.

Health.
Exposure effects
   Ingestion
The toxicological properties of this substance have not been fully investigated.
   Inhalation
Dust is irritating to the respiratory tract.
   Skin
Causes skin irritation.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
Get medical aid. Wash mouth out with water.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.