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NIOSH

DEMETON-S

ICSC: 0864

O,O-Diethyl S-2-ethylthioethyl phosphorothioate
Demethonthiol
C8H19O3PS2
Molecular mass: 258.3
ICSC # 0864 		CAS # 126-75-0
RTECS # TF3130000
UN # 3018
EC # 015-029-00-4
April 04, 2006 Validated

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.
Foam, powder, carbon dioxide.
EXPLOSION


EXPOSURE
PREVENT GENERATION OF MISTS! AVOID ALL CONTACT! AVOID EXPOSURE OF ADOLESCENTS AND CHILDREN!
IN ALL CASES CONSULT A DOCTOR!
•INHALATION Dizziness. Nausea. Vomiting. Pupillary constriction, muscle cramp, excessive salivation. Laboured breathing. Convulsions. Unconsciousness.
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Artificial respiration may be needed. Refer for medical attention. See Notes.
•SKIN MAY BE ABSORBED! Muscle twitching. Further (see Inhalation).
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.
•EYES Redness. Pain.
Face shield.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION Abdominal cramps. Diarrhoea. Further (see Inhalation).
Do not eat, drink, or smoke during work. Wash hands before eating.
Give a slurry of activated charcoal in water to drink. Rest. Refer for medical attention. See Notes.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Chemical protection suit including self-contained breathing apparatus. 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.
Separated from food and feedstuffs. Dry. Keep in a well-ventilated room. Store in an area without drain or sewer access.
Do not transport with food and feedstuffs.
T+ symbol
R: 27/28
S: 1/2-28-36/37-45
UN Hazard Class: 6.1
UN Packing Group: I
Signal: Danger
Skull-Health haz
Fatal if swallowed
Causes damage to nervous system
ICSC: 0864 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

DEMETON-S

ICSC: 0864

I

M

P

O

R

T

A

N

T


D

A

T

A

PHYSICAL STATE; APPEARANCE:
COLOURLESS OILY LIQUID.

PHYSICAL DANGERS:


CHEMICAL DANGERS:
The substance decomposes on heating, producing toxic and corrosive fumes including phosphorus oxides and sulfur oxides

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.
MAK not established.


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

INHALATION RISK:
No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20°C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance may cause effects on the central nervous system , resulting in convulsions and respiratory depression . Cholinesterase inhibition. Exposure may result in death. The effects may be delayed. Medical observation is indicated. See Notes.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

Boiling point at 0.1kPa: 128°C
Relative density (water = 1): 1.13
Solubility in water, g/100 ml at 20°C: 0.2
Vapour pressure, Pa at 20°C: 0.035
Relative vapour density (air = 1): 8.92

ENVIRONMENTAL
DATA

This substance may be hazardous to the environment; special attention should be given to fish and honey bees. 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.

N O T E S

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. Carrier solvents used in commercial formulations may change physical and toxicological properties. Do NOT take working clothes home.
Transport Emergency Card: TEC (R)-61 GT6-I
Card has been partially updated in March 2008: see Occupational Exposure Limits, Storage.

ADDITIONAL INFORMATION



ICSC: 0864 DEMETON-S
(C) IPCS, CEC, 1994
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 NIOSH IDLH values.
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