Carbaryl

  • Sevin
  • 1-Naphthyl n-methyl carbamate
  • 1-Naphthalenol methylcarbamate
  • 1-Napthyl methylcarbamate
  • Methyl carbamic acid 1-Napthyl ester
Formula
C12H11NO2
Structure
Description
A white crystalline solid.
Uses
Insecticide for corn, alfalfa, livestock, poultry, other non-agricultural uses (eg, home use), gardens, lawns, & for commercialindustrial use, acaricide & molluscicide.

Registry Numbers and Inventories.
CAS
63-25-2
EC (EINECS/ELINCS)
200-555-0
EC Index Number
006-011-00-7
EC Class
Carcinogenic Category 3; Harmful; Dangerous for the Environment
RTECS
FC5950000
RTECS class
Agricultural Chemical and Pesticide; Tumorigen; Mutagen; Reproductive Effector; Human Data; Primary Irritant
UN (DOT)
2757
Merck
12,1831
Beilstein/Gmelin
1875862
Beilstein Reference
4-06-00-04219
RCRA
U279
EPA OPP
56801
Swiss Giftliste 1
G-1358
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C12H11NO2
Formula mass
201.22
Melting point, °C
138 - 140
Boiling point, °C
315
Vapor pressure, mmHg
0.0002 (25 C)
Vapor density (air=1)
1.232
Density
1.23 g/cm3 (20 C)
Solubility in water
Insoluble
pKa/pKb
12.02 (pKa)
Partition coefficient, pKow
2.36
Heat of vaporization
57.2 kJ/mol

Hazards and Protection.
Storage
Keep in well ventilated area.
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 appropriate protective gloves, clothing and goggles.
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. Dike surface flow using soil, sand bags, foamed polyurethane, or foamed concrete. 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. Remove trapped material with suction hoses.
Stability
Stable.
Incompatibilities
Incompatible with strong acids and bases, and especially
Decomposition
When heated to decomposition it emits toxic fumes of oxides of nitrogen.

Fire.
Flash Point,°C
153
Fire fighting
Fire Extinguishing Agents: Solution fires; Water, foam, dry chemical, CO 2
Fire potential
Nonflammable.
Hazards
Containers may explode when heated. Runoff may pollute waterways.
Combustion products
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.

Health.
Exposure limit(s)
TLV: ppm; 5 mg/m3 (as TWA) (ACGIH 1993-1994). MAK: ppm; 5 mg/m3; (1992). OSHA PEL: TWA 5 mg/m3 NIOSH REL: TWA 5 mg/m3 NIOSH IDLH: 100 mg/m3
Poison_Class
3
Exposure effects
In severe poisoning, respiratory depression, mental confusion, unconsciousness, brain hemorrhages, and seizures may occur. Children may be more susceptible to seizures than adults. Headache, blurred vision, tremor, paresis, mental depression, coma, delayed neuropathies, various dystonias, weakness, muscle twitching may be noted.
   Ingestion
Nausea, vomiting, diarrhea, and abdominal cramping have been reported and are common.
   Inhalation
Dyspnea, wheezing, rales, increased bronchial secretions, respiratory muscle weakness and respiratory failure may occur. Usual cause of death is respiratory failure.
   Skin
A possible occupational effect is contact dermatitis. Diaphoresis may be seen after exposure. Cellulitis was seen after injection of household spray.
   Eyes
Constriction of the pupil and blurred vision are common. Mydriasis may occur.

First aid
 
   Ingestion
Do not induce emesis. 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 jewelry. Wash the skin, including hair and nails, vigorously; do repeated soap washings. Discard contaminated clothing.
   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.
UN number
2757
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
USCG CHRIS Code
CBY
 
Std. Transport #
4921446