IPCS INCHEM Home
METHIOCARBICSC: 1766
3,5-dimethyl-4-(methylthio)phenylmethylcarbamate
4-methylthio-3,5-xylylmethylcarbamate
Phenol,3,5-dimethyl-4-(methylthio)methylcarbamate
mercaptodimethur
June 2012
CAS #: 2032-65-7
UN #: 2757 (carbamate pesticide)
EC Number: 217-991-2

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible.  Finely dispersed particles form explosive mixtures in air.  NO open flames.  Prevent deposition of dust.  In case of fire in the surroundings, use appropriate extinguishing media.   

 AVOID EXPOSURE OF BREASTFEEDING WOMEN! AVOID EXPOSURE OF ADOLESCENTS AND CHILDREN!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough.  Avoid inhalation of dust.  Fresh air, rest. Refer for medical attention. 
Skin MAY BE ABSORBED!  Protective clothing. Protective gloves.  Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer immediately for medical attention. 
Eyes Pupillary constriction. Watering of the eyes.  Wear face shield.  Rinse with plenty of water (remove contact lenses if easily possible). 
Ingestion Excessive salivation. Blurred vision. Sweating. Headache. Vomiting. Diarrhoea. Convulsions. Unconsciousness.  Do not eat, drink, or smoke during work. Wash hands before eating.  Rinse mouth. Refer immediately for medical attention. 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into sealable containers. If appropriate, moisten first to prevent dusting. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

skull;toxiccancer;health hazenviro;aqua
DANGER
Fatal if swallowed
Toxic in contact with skin
May cause damage to the nervous system
May cause damage to nervous system through prolonged or repeated exposure
May cause harm to breast-fed children
Very toxic to aquatic life 

Transportation
UN Classification
UN Hazard Class: 6.1; UN Pack Group: II 

STORAGE
Separated from food and feedstuffs. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing. 
PACKAGING
 
METHIOCARB ICSC: 1766
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE CRYSTALS OR FLAKES WITH CHARACTERISTIC ODOUR. 

Physical dangers
 

Chemical dangers
Decomposes on heating and on burning. On combustion, forms irritating and toxic fumes and gases of sulfur oxides including sulfur dioxide (see ICSC 0074). 

Formula: C11H15NO2S
Molecular mass: 225.3
Melting point: 119°C
Solubility in water, mg/l: 27
Vapour pressure, Pa at 20°C: 0.000015
Octanol/water partition coefficient as log Pow: 3.08  


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
Cholinesterase inhibition. The substance may cause effects on the nervous system. The effects may be delayed. 

Inhalation risk
A harmful concentration of airborne particles can be reached quickly on spraying or when dispersed, especially if powdered. 

Effects of long-term or repeated exposure
Cholinesterase inhibition. See Acute Hazards/Symptoms. 


OCCUPATIONAL EXPOSURE LIMITS
 

ENVIRONMENT
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. This substance may be hazardous to the environment. Special attention should be given to birds. 

NOTES
Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: T, N; R: 25-50/53; S: (1/2)-22-37-45-60-61 

All rights reserved. The published material is being distributed without warranty of any kind, either expressed or implied. Neither ILO nor WHO nor the European Commission shall be responsible for the interpretation and use of the information contained in this material.
    See Also:
       Toxicological Abbreviations
       Methiocarb (Pesticide residues in food: 1981 evaluations)
       Methiocarb (Pesticide residues in food: 1983 evaluations)
       Methiocarb  (JMPR Evaluations 1998 Part II Toxicological)