THIOMETON (ICSC)

THIOMETON	ICSC: 0580

Date of peer-review: April 1997

S-2-Ethylthioethyl O,O-dimethyl phosphorodithioate
Phosphorodithioic acid, S-(2-(ethylthio)ethyl)O,O-dimethyl ester
Dithiomethon

CAS #

640-15-3

C₆H₁₅O₂PS₃ / (CH₃O)₂P(S)SCH₂CH₂SCH₂CH₃

RTECS #

TE4375000

Molecular mass: 246.3

UN #

3018

EC #

015-050-00-9

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRST AID / FIRE FIGHTING
FIRE	Combustible. Liquid formulations containing organic solvents may be flammable. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames.	Powder, water spray, foam, carbon dioxide.
EXPLOSION	Risk of fire and explosion if formulations contain flammable/explosive solvents.

EXPOSURE		PREVENT GENERATION OF MISTS! AVOID EXPOSURE OF ADOLESCENTS AND CHILDREN!	IN ALL CASES CONSULT A DOCTOR!
Inhalation	Dizziness. Sweating. Laboured breathing. Nausea. Pupillary constriction, muscle cramp, excessive salivation.	Ventilation, local exhaust, or breathing protection.	Fresh air, rest. Refer for medical attention.
Skin	MAY BE ABSORBED! (Further see Inhalation).	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.
Eyes		Safety spectacles, 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. Vomiting. Diarrhoea. Weakness. Twitching. Convulsions. Unconsciousness. (Further see Inhalation).	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Give a slurry of activated charcoal in water to drink. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Rest. Refer for medical attention.

SPILLAGE DISPOSAL

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 wash away into sewer. (Extra personal protection: chemical protection suit including self-contained breathing apparatus).

Do not transport with food and feedstuffs.
EU Classification
Symbol: T
R: 21-25
S: (1/2-)36/37-45
UN Classification
UN Hazard Class: 6.1
UN Pack Group: III

EMERGENCY RESPONSE

STORAGE

Transport Emergency Card: TEC (R)-61G43c

Provision to contain effluent from fire extinguishing. Separated from food and feedstuffs. Keep in a well-ventilated room.

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities © IPCS, CEC 2001

SEE IMPORTANT INFORMATION ON BACK

THIOMETON

ICSC: 0580

IMPORTANT DATA

PHYSICAL STATE; APPEARANCE:
COLOURLESS OILY LIQUID, WITH CHARACTERISTIC ODOUR.

CHEMICAL DANGERS:
The substance decomposes on heating or on burning producing toxic fumes including phosphorous oxides, sulfur oxides.

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.

ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation, 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 on spraying.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance may cause effects on the nervous system. The effects may be delayed. Medical observation is indicated.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact with skin may cause dermatitis. Cholinesterase inhibitor; cumulative effect is possible: see acute hazards/symptoms.

PHYSICAL PROPERTIES

Boiling point at O.013 kPa: 110°C
Relative density (water = 1): 1.2
Solubility in water, g/100 ml at 25°C: 0.02
Vapour pressure, Pa at 20°C: 0.02
Relative vapour density (air = 1): 8.5

Relative density of the vapour/air-mixture at 20°C (air = 1): 1.00
Octanol/water partition coefficient as log Pow: 0.51

ENVIRONMENTAL DATA

The substance is toxic to aquatic organisms. This substance may be hazardous to the environment; special attention should be given to bees. Avoid release to the environment in circumstances different to normal use.

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. If the substance is formulated with solvent(s) also consult the card(s) (ICSC) of the solvent(s). Carrier solvents used in commercial formulations may change physical and toxicological properties. Ekatin, Medrin, Unimeton are trade names.

ADDITIONAL INFORMATION

LEGAL NOTICE

Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information

    See Also:
       Toxicological Abbreviations
       Thiometon (PDS)
       Thiometon (FAO/PL:1969/M/17/1)
       Thiometon (WHO Pesticide Residues Series 3)
       Thiometon (Pesticide residues in food: 1976 evaluations)
       Thiometon (Pesticide residues in food: 1979 evaluations)