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BENOMYL
ICSC: 0382
Peer-Review Status: 08.06.2012 Validated
Methyl 1-((butylamino)carbonyl)-1H-benzimidazol-2-ylcarbamate
Carbamic acid, ((1-(butylamino)carbonyl)-1H-benzimidazol-2-yl), methyl ester
1-(Butylcarbamoyl)-2-benzimidazol-methylcarbamat
Methyl 1-(butylcarbamoyl)benzimidazol-2-ylcarbamate 
CAS #: 17804-35-2 RTECS #: DD6475000
UN #: 3077
EC #: 613-049-00-3
EINECS #: 241-775-7
    Formula: C14H18N4O3
Molecular mass: 290.3

TYPES OF HAZARD
/ EXPOSURE
ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE-FIGHTING
FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.  NO open flames.  Use water spray, powder, alcohol-resistant foam, carbon dioxide. 
EXPLOSION Finely dispersed particles form explosive mixtures in air.  PREVENT DISPERSION OF DUST.   
 
EXPOSURE   PREVENT DISPERSION OF DUST!   
Inhalation Cough.  Use local exhaust or breathing protection.  Fresh air, rest. 
Skin Redness.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes Redness.  Wear safety goggles.  Rinse with plenty of water for several minutes (remove contact lenses if easily possible). 
Ingestion No acute symptoms expected.  Do not eat, drink, or smoke during work. Wash hands before eating.  Rinse mouth. 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. If appropriate, moisten first to prevent dusting. Sweep spilled substance into covered containers. Carefully collect remainder. Then store and dispose of according to local regulations.  Do not transport with food and feedstuffs. 
EC Classification
Symbol: T, N; R: 46-60-61-37/38-43-50/53; S: 53-45-60-61 
UN Classification
UN Hazard Class: 9; UN Pack Group: III 
GHS Classification
Signal: Danger
Causes mild skin irritation
May cause an allergic skin reaction
May cause genetic defects
May damage fertility or the unborn child
Very toxic to aquatic life with long lasting effects 
excl mark;warncancer;health hazenviro;aqua

EMERGENCY RESPONSE SAFE STORAGE
  Separated from food and feedstuffs. Dry. Well closed. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing. 

IMPORTANT DATA
Physical State; Appearance
WHITE CRYSTALLINE POWDER WITH CHARACTERISTIC ODOUR. 

Physical dangers
Dust explosion possible if in powder or granular form, mixed with air. 

Chemical dangers
Decomposes on heating. This produces toxic fumes including nitrogen oxides. Reacts with strong oxidants and peroxides. This generates fire and explosion hazard. 

Occupational exposure limits
TLV: 1mg/m³ as TWA; (SEN); A3 (confirmed animal carcinogen with unknown relevance to humans); (ACGIH 2011).
MAK: Germ cell mutagen group: 3A; Sensitization of skin (SH); (DFG 2011). 

Routes of exposure
The substance can be absorbed into the body by inhalation, by ingestion and through the skin. 

Inhalation risk
A nuisance-causing concentration of airborne particles can be reached quickly when dispersed. 

Effects of short-term exposure
The substance is irritating to the skin, eyes and respiratory tract. 

Effects of long-term or repeated exposure
Repeated or prolonged contact may cause skin sensitization. Animal tests show that this substance possibly causes toxic effects upon human reproduction. May cause genetic damage in humans. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Melting point: No melting point; decomposes at 140°C
Solubility in water, mg/l at 25°C: 3.8 (very poor)
Vapour pressure, Pa at 25°C: (negligible)
Density: 0.38 g/cm³
Octanol/water partition coefficient as log Pow: 2.12
Explosive limits, vol% in air: 0.05 - ?
Auto-ignition temperature: 220°C  
The substance is very toxic to aquatic organisms. This substance does enter the environment under normal use. Great care, however, should be taken to avoid any additional release, for example through inappropriate disposal. 

NOTES
Do NOT take working clothes home.
If the substance is formulated with solvents also consult the ICSCs of these materials. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations
       Benomyl (EHC 148, 1993)
       Benomyl (HSG 81, 1993)
       Benomyl (WHO Pesticide Residues Series 3)
       Benomyl (WHO Pesticide Residues Series 5)
       Benomyl (Pesticide residues in food: 1983 evaluations)
       Benomyl (JMPR Evaluation 1995 Part II Toxicological and environmental)