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FENSULFOTHION ICSC: 1406
Date of Peer Review: October 2001

O,O-Diethyl O-(p-(methylsulfinyl)phenyl) phosphorothioate
O,O-Diethyl O-p-(methylsulfinyl)phenyl thiophosphate
CAS # 115-90-2 C11H17O4PS2
RTECS # TF3850000 Molecular mass: 308.36
UN # 3018
EC Index # 015-090-00-7
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


EXPOSURE
AVOID ALL CONTACT!
IN ALL CASES CONSULT A DOCTOR!
Inhalation Pupillary constriction, muscle cramp, excessive salivation. Sweating. Nausea. Laboured breathing. Dizziness. Convulsions. Unconsciousness.
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.
Skin EASILY ABSORBED! (See Inhalation).
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.
Eyes
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. (Further see Inhalation).
Do not eat, drink, or smoke during work. Wash hands before eating.
Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Ventilation. 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. Personal protection: chemical protection suit including self-contained breathing apparatus.
Do not transport with food and feedstuffs. Marine pollutant.
EU Classification
Symbol: T+, N
R: 27/28-50/53
S: (1/2-)-23-28-36/37-45-60-61
UN Classification
UN Hazard Class: 6.1
UN Pack Group: I
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-61GT6-I
Provision to contain effluent from fire extinguishing. Separated from food and feedstuffs. Well closed.
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 2005

SEE IMPORTANT INFORMATION ON BACK
FENSULFOTHION ICSC: 1406
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
OILY, YELLOW OR BROWN LIQUID

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

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 0.01 mg/m as TWA; (skin); A4 (not classifiable as a human carcinogen); BEI issued; (ACGIH 2005).
MAK not established.
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 20C 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, resulting in convulsions and respiratory failure. Cholinesterase inhibitor. Exposure above the OEL may result in death. The effects may be delayed. Medical observation is indicated.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Cholinesterase inhibitor; cumulative effect is possible: see acute hazards/symptoms.
PHYSICAL PROPERTIES
Boiling point at 0.0013 kPa: 138-141 C
Relative density (water = 1): 1.202
Solubility in water, g/100 ml at 25C: 0.15
Vapour pressure, Pa at 25C: 0.0067
Octanol/water partition coefficient as log Pow: 2.23
ENVIRONMENTAL DATA
The substance is toxic to aquatic organisms. This substance may be hazardous in the environment; special attention should be given to birds 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.
NOTES
Depending on the degree of exposure, periodic medical examination is suggested. 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. Do NOT take working clothes home. Card has been partly updated in April and October 2005. See section Occupational Exposure Limits.
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
IPCS, CEC 2005
See Also:
        Fensulfothion (PIM 779)