Oxamyl

  • Caswell No. 561a
  • 2-(Dimethylamino)-N acid methyl ester
  • N,N-Dimethyl-alpha-methylcarbamoyloxyimino-alpha-(methylthio)acetamide
  • N,N-Dimethyl-2-methylcarbamoyloxyimino-2-(methylthio)acetamide
  • Ethanimidothioic acid, 2-(dimethylamino)-N-(((methylamino)carbonyl)oxy)-methyl ester
  • Ethanimidothioic acid, 2-(dimethylamino)-N-(((methylamino)carbonyl)oxy)-2-oxo, methyl ester
Formula
C7H13N3O3S
Structure
Description
White, crystalline solid, with slight sulfurous odor.
Uses
insecticide, nematicide, acaricide.

Registry Numbers and Inventories.
CAS
23135-22-0
EC (EINECS/ELINCS)
245-445-3
EC Index Number
006-059-00-9
EC Class
Very toxic; Harmful; Dangerous for the Environment
RTECS
RP2300000
RTECS class
Agricultural Chemical and Pesticide; Reproductive Effector
UN (DOT)
2588
Merck
12,7052
Beilstein/Gmelin
2050910
RCRA
P194
EPA OPP
103801
Swiss Giftliste 1
G-4865
Austrailia AICS
Listed
New Zealand
Listed

Properties.
Formula
C7H13N3O3S
Formula mass
219.26
Melting point, °C
100-102
Density
0.97 g/cm3 (25 C)
Solubility in water
Soluble
pKa/pKb
12.39 (pKa)
Partition coefficient, pKow
-0.47

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
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
This is a solid carbamate pesticide. Keep unnecessary people away; isolate hazard areas and deny entry. Stay upwind, keep out of low areas. Do not touch spilled material, or breathe the vapors, dusts or fumes from burning materials. Do not handle broken packages without protective equipment. Wash away any material that may have contacted the body with soap and water.
Stability
Decompostion is increased by aeration, sunlight, alkalinity and higher temperatures.
Incompatibilities
Incompatible with strong acids and bases, and especially

Fire.
Fire fighting
This is a solid carbamate pesticide. Move container from fire area. Fight fire from maximum distance. Dike fire control water for later disposal; do not scatter the material. Wear positive pressure breathing apparatus and special protective clothing.Extinguish fire using agent suitable for type of surrounding fire, as the material itself does not burn or burns with difficulty. Use water in flooding quantities as a fog. Use alcohol foam, carbon dioxide or dry chemical.
Fire potential
Non-Combustible
Hazards
When heated to decomposition, it emits toxic fumes of nitrogen oxides and sulfur oxides. This is a solid carbamate pesticide. Container may explode in heat of fire.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Poison_Class
2
Exposure effects
Blurred vision, miosis, tremor, muscle twitching, convulsions, mental confusion, and coma may occur. Delayed peripheral neuropathy similar to that seen with organophosphates has been described in one case. Dystonic reaction may occur following parenteral injection. Oxamyl produced lower birth weights and smaller litter sizes in rats. <br>No data were available to assess the potential effects of exposure to this agent during pregnancy or lactation.
   Ingestion
Nausea, vomiting, diarrhea, and abdominal cramping may be noted.
   Inhalation
Dyspnea, rales, and pulmonary edema may occur.
   Skin
Avoid any skin contact. See Inhalation.
   Eyes
See Inhalation.

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
2588
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
USCG CHRIS Code
OXL