- m-Cresyl methylcarbamate
- DRC 3341
- 3-Methylphenyl methylcarbamate
Colorless crystalline solid.
An insecticide used to control sucking insects on rice such as leafhoppers and planthoppers. Used for control of citrus mealybugs, onion thrips, mediterranean fruit flies, pink bollworms and cotton aphids.
Registry Numbers and Inventories.
EC Index Number
Harmful; Dangerous for the Environment
Agricultural Chemical and Pesticide; Mutagen; Human Data
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
78 - 82
Vapor pressure, mmHg
Solubility in water
2.6 g/L @ 30 C
Partition coefficient, pKow
Hazards and Protection.
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.
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.
When handling metolcarb, a respirator with gas absorbent should be used. Protective clothing includes gloves, gas mask or respiratory, goggles, and clothing. When handling, wear a respiratory with gas absorbent. Avoid skin and eye contact.
Use NIOSH/MSHA approved respirator appropriate for exposure of concern.
Avoid inhalation. For solid carbamate pesticides, use the following procedures. For small spills, take up with sand or other noncombustible absorbent material and place in containers for later disposal. For small dry spills, with clean shovel place material into clean, dry container and cover; move container from spill area. For large spills, dike far ahead of spill for later disposal. Do not touch spilled material. Use water spray to reduce vapors.
Incompatible with strong acids and bases, and especially
Procedures for carbamate pesticides, solid, include the following. Stay upwind and keep out of low areas. Wear positive pressure breathing apparatus and special protective clothing. Move container from fire area if you can do it without risk. Fight fire from maximum distance. Dike fire control water for later disposal; do not scatter the material.Metolcarb is a carbamate insecticide.Solid carbamate pesticides may burn but do not ignite readily. For small fires, use dry chemical, carbon dioxide, water spray, and foam. For large fires, use water spray, fog or foam. Dike fire control water for later disposal.
Neither flammable nor autoignitible.
As for other solid carbamate pesticides, container may explode in heat of fire. Fire and runoff from fire control water may produce irritating or poisonous gases. Emits toxic fumes of nitrogen oxides when heated to decomposition. Avoid decomposing heat.
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. Metolcarb was fetotoxic in rats, crossed the placenta in rats and ewes, and was detectible in ewe's milk.
Nausea, vomiting, diarrhea, and abdominal cramping may be noted.
Dyspnea, rales, and pulmonary edema may occur.
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.
Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.
Remove contaminated clothing and jewelry. Wash the skin, including hair and nails, vigorously; do repeated soap washings. Discard contaminated clothing.
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.
USCG CHRIS Code