- Methyl 1-(Butylcarbamoyl)benzimidazol-2-ylcarbamate
- Methyl 1-(Butylcarbamoyl)-2-Benzimidazolecarbamate
Colorless to white crystals or off-white powder. Faint acrid odor.
Registry Numbers and Inventories.
EC Index Number
Mutagenic Category 3
Agricultural Chemical and Pesticide; Mutagen; Reproductive Effector; Primary Irritant
Swiss Giftliste 1
Melting point, °C
328 - 334
Vapor pressure, mmHg
Solubility in water
Partition coefficient, pKow
Hazards and Protection.
Store in the dry state. Do not contaminate water, food, or feeds by storage or disposal. Keep benlate dry during storage to avoid certain chemical changes affecting fungicidal effectiveness. Keep container tightly closed when not in use.
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.
Wear appropriate protective gloves, clothing and goggles.
Wear positive pressure self-contained breathing apparatus (SCBA).
Should a spill occur while you are handling this chemical, FIRST REMOVE ALL SOURCES OF IGNITION, then you should dampen the solid spill material with 60-70% ethanol and transfer the dampened material to a suitable container. Use absorbent paper dampened with 60-70% ethanol to pick up any remaining material. Seal the absorbent paper, and any of your clothes, which may be contaminated, in a vapor-tight plastic bag for eventual disposal. Solvent wash all contaminated surfaces with 60-70% ethanol followed by washing with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.
Subject to decomp on storage in presence of moisture. Non-volatile @ room temperature.
Incompatible with strong acids, peroxides and strong oxidizers.
Fires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher. A water spray may also be used.
This material is nonflammable
Fire may produce irritating, corrosive and/or toxic gases.
TLV: 0.84 ppm; 10 mg/m3 (as TWA) (ACGIH 1997). OSHA PEL: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp) NIOSH REL: See Appendix D
Benomyl has produced brain, eye and systemic malformations in rats, as well as adverse efffects on the male reproductive system of the rat.
Benomyl is a potential mild respiratory irritant.
Skin irritation, eczema and contact dermatitis has been described.
Rare eye irritation has been noted.
DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, administer a slurry of activated charcoal in water and simultaneously call a hospital or poison control center. IMMEDIATELY transport the victim to a hospital.
IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used.
IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.
First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.
I; II; III