ICSC 0861 - DEMETON (MIXED ISOMERS)

[List of Chemicals] [Risk Notes] [Risk Phrases] [Safety Phrases] [Danger Symbols]

DEMETON (MIXED ISOMERS)

ICSC: 0861
_{October 2002}

CAS No: 8065-48-3
RTECS No: TF3150000
UN No: 3018
EC No: 015-118-00-8

(C₂H₅O)₂PS.OCH₂CH₂SC₂H₅ and (C₂H₅O)₂PO.SCH₂CH₂SC₂H₅
Molecular mass: 258.34

TYPES OF HAZARD / EXPOSURE	ACUTE HAZARDS / SYMPTOMS	PREVENTION	FIRE FIGHTING
FIRE	Combustible. Gives off irritating or toxic fumes (or gases) in a fire. Liquid formulations containing organic solvents may be flammable.	NO open flames.	Water spray, foam, carbon dioxide, alcohol-resistant foam, dry powder.
EXPLOSION

EXPOSURE		PREVENT GENERATION OF MISTS! AVOID ALL CONTACT!	IN ALL CASES CONSULT A DOCTOR!
Inhalation	Convulsions. Dizziness. Laboured breathing. Nausea. Vomiting. Pupillary constriction, muscle cramp, excessive salivation. Sweating. Unconsciousness.	Ventilation, local exhaust, or breathing protection.	Fresh air, rest. Artificial respiration may be needed. Refer for medical attention.
Skin	MAY BE ABSORBED! (Further see Inhalation).	Protective clothing. Protective gloves.	Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.
Eyes	LIQUID OR AEROSOL WILL BE ABSORBED! Redness. Pain.	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. Vomiting. (See Inhalation).	Do not eat, drink, or smoke during work. Wash hands before eating.	Give a slurry of activated charcoal in water to drink. See Notes. 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 let this chemical enter the environment. Chemical protection suit including self-contained breathing apparatus.	T+ Symbol N Symbol R: 27/28-50 S: (1/2-)28-36/37-45-61 UN Hazard Class: 6.1 UN Subsidiary Risks: 3 UN Pack Group: I	Do not transport with food and feedstuffs.

EMERGENCY RESPONSE	STORAGE
Transport Emergency Card: TEC (R)-61GT6-I	Separated from strong oxidants, food and feedstuffs. Keep in a well-ventilated room.

IMPORTANT DATA

Physical State; Appearance
COLOURLESS LIQUID

Chemical dangers
The substance decomposes on burning producing toxic fumes including phosphorous oxides and sulfur oxides. Reacts violently with strong oxidants. Attacks plastic.

Occupational exposure limits
TLV: 0.05 mg/m³ as TWA; (skin); BEI issued; (ACGIH 2002).
MAK: IIb (see Notes); H; (DFG 2002).

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

Inhalation risk
A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20°C; on spraying or dispersing, however, much faster.

Effects of short-term exposure
The substance may cause effects on the nervous system, resulting in cardiac disorders, convulsions, cyanosis and respiratory failure. Cholinesterase inhibition. Exposure may result in death. Medical observation is indicated. The effects may be delayed.

Effects of long-term or repeated exposure
Cholinesterase inhibitor; cumulative effect is possible: see acute hazards/symptoms.

PHYSICAL PROPERTIES	ENVIRONMENTAL DATA
Boiling point at 0.27kPa: 134°C Relative density (water = 1): 1.1 Solubility in water: poor Vapour pressure, Pa at 20°C: <10 Auto-ignition temperature: 464°C	The substance is very toxic to aquatic organisms. This substance may be hazardous in the environment; special attention should be given to birds, honey bees and mammals. This substance does enter the environment under normal use. Great care, however, should be given to avoid any additional release, e.g. through inappropriate disposal.

NOTES

This substance is a mixture of two isomers: Demeton-O and Demeton-S (see ICSC 0864).
Do NOT take working clothes home.
Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available.
Depending on the degree of exposure, periodic medical examination is suggested.
Carrier solvents used in commercial formulations may change physical and toxicological properties.
MAK value not established but full documentation is available (MAK IIb).

IPCS
International
Programme on
Chemical Safety

Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2002

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.

Updated by AS. Approved by EC. Last update: 21.03.2003