International Chemical Safety Cards

DEMETON METHYLE ICSC: 0862

DEMETON METHYLE
Methyl demeton
Phosphorothioic acid O-(2-(ethylthio)ethyl) O,O-dimethyl ester (O compound) mixed with S-(2-(ethylthio)-ethyl) O,O-dimethyl phosphorothioate (S compound)
Methyl mercaptophos
C6H15O3PS2
Molecular mass: 230.3
CAS # 8022-00-2
ICSC # 0862
TYPES OF
HAZARD/
EXPOSURE 		ACUTE HAZARDS/
SYMPTOMS 		PREVENTION FIRST AID/
FIRE FIGHTING
FIRE


EXPLOSION


EXPOSURE
PREVENT GENERATION OF MISTS! STRICT HYGIENE! AVOID EXPOSURE OF ADOLESCENTS AND CHILDREN!
IN ALL CASES CONSULT A DOCTOR!
  • INHALATION
    		• dizziness, convulsions, laboured breathing, Nausea, unconsciousness. vomiting, pupillary constriction, muscle cramps, hypersalivation
    		Ventilation, local exhaust, or breathing protection.
    		Fresh air, rest, and refer for medical attention.
  • SKIN
    		• MAY BE ABSORBED! Muscle twiching at first (further see Inhalation).
    		Protective gloves, protective clothing.
    		Remove contaminated clothes, rinse and then wash skin with water and soap, and refer for medical attention.
  • EYES
    		• Liquid, aerosol will be absorbed. Redness, pain, pupillary constriction.
    		Face shield or eye protection in combination with breathing protection.
    		First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
  • INGESTION
    		• abdominal cramps, diarrhoea, laboured breathing, Nausea, unconsciousness. vomiting, pupillary constriction, muscle cramps,
    		Do not eat, drink, or smoke during work.
    		Induce vomiting (ONLY IN CONSCIOUS PERSONS!), rest, and refer for medical attention.
    SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
    Collect leaking and spilled liquid in sealable containers as far as possible, absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT let this chemical enter the environment (extra personal protection: complete protective clothing including self-contained breathing apparatus).
    		Separated from bases and acids; cool.

    T symbol
    R: 23/24/25-36
    S: 2-13-26-44
    SEE IMPORTANT INFORMATION ON BACK
    ICSC: 0862 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1990 No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and IDLH values.

    International Chemical Safety Cards

    DEMETON METHYLE ICSC: 0862

    I
    M
    P
    O
    R
    T
    A
    N
    T

    D
    A
    T
    A
    PHYSICAL STATE; APPEARANCE
     YELLOW VISCOUS LIQUID, WITH UNPLEASANT ODOUR.

    PHYSICAL DANGERS:

    CHEMICAL DANGERS:
     The substance decomposes under influence of alkalies and acids.

    OCCUPATIONAL EXPOSURE LIMITS:
     TLV: ppm; 0.5 mg/m3 (skin) (ACGIH 1989-1990).
    OSHA PEL: none
    NIOSH REL: TWA 0.5 mg/m3 skin
    NIOSH IDLH: No data


    		ROUTES OF EXPOSURE:
     The substance can be absorbed into the body by inhalation of its aerosol, through the skin, and by ingestion.

    INHALATION RISK:
     Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly by spraying.

    EFFECTS OF SHORT-TERM EXPOSURE:
     The substance and the aerosol irritates the eyes and the nasal mucosa. The substance may cause effects on the nervous system by cholinesterase inhibitting effect , resulting in convulsions respiratory failure and death. Exposure above OEL may result in unconsciousness. Exposure above OEL may result in death. The effects may be delayed. Medical observation is indicated.

    EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
     The substance may have effects on cholinesterase , resulting in significant depression of blood cholinesterase. Repeated or prolonged exposure may cause irritation of the respiratory tract and the inner ear. Cumulative effect is possible resulting in an important depression of blood cholinesterase (see acute hazard symptoms).
    PHYSICAL
    PROPERTIES
    Boiling point: at 20 Pa 74°C (O), 89°C (S)°C
    Relative density (water = 1): 1.19 (O), 1.2 (S)
    		Solubility in water: None
    ENVIRONMENTAL
    DATA
         		This substance may be hazardous to the environment; special attention should be given to bees and fishes. It is strongly advised not to let the chemical enter into the environment.
    NOTES
    Depending on the degree of exposure, periodic medical examination is indicated. Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available. Do NOT take working clothes home.
    The recommendations of this card apply to pure form. Commercial formulations are often mixtures including impurities, solvents or other agents which modify toxic and physico-chemical properties.
    ADDITIONAL INFORMATION


    ICSC: 0862 DEMETON METHYLE
    © IPCS, CEC, 1990
    IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and IDLH values.