ICSC 0655 - FENTHION

« back to the search result list

FENTHION	ICSC: 0655 (October 2006)
Phosphorothioic acid, O,O-dimethyl O-(3-methyl-4-(methylthio)phenyl) ester O,O-Dimethyl-O-(4-methylthio-m-tolyl) phosphorothioate

CAS #: 55-38-9

UN #: 3018

EC Number: 200-231-9

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible. Liquid formulations containing organic solvents may be flammable. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames.	Use water spray, foam, powder, carbon dioxide.

PREVENT GENERATION OF MISTS! STRICT HYGIENE! IN ALL CASES CONSULT A DOCTOR!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Dizziness. Nausea. Vomiting. Sweating. Pupillary constriction, muscle cramp, excessive salivation. Laboured breathing. Convulsions. Unconsciousness.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Refer immediately 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 . Wear protective gloves when administering first aid.
Eyes	Blurred vision.	Wear 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 refer for medical attention.
Ingestion	Abdominal cramps. Diarrhoea. Nausea. Vomiting. Further see Inhalation. Pupillary constriction. Muscle cramps. Excessive salivation.	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Give a slurry of activated charcoal in water to drink. Refer immediately for medical attention.

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Personal protection: chemical protection suit, protective gloves and filter respirator for organic gases and particulates adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in dry sand or inert absorbent. Then store and dispose of according to local regulations.	According to UN GHS Criteria DANGER Toxic if swallowed or in contact with skin Causes damage to nervous system Very toxic to aquatic life Transportation UN Classification UN Hazard Class: 6.1; UN Pack Group: III
STORAGE
Separated from strong oxidants and food and feedstuffs. Well closed. Keep in a well-ventilated room. Provision to contain effluent from fire extinguishing. Store in an area without drain or sewer access.
PACKAGING
Do not transport with food and feedstuffs. Severe marine pollutant.

FENTHION

ICSC: 0655

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS OILY LIQUID WITH CHARACTERISTIC ODOUR. PALE YELLOWISH BRONZE LUMPS WITH METALLIC LUSTRE. Physical dangers Chemical dangers Decomposes on heating. This produces toxic fumes including phosphorus oxides and sulfur oxides. Reacts with oxidants.	Formula: C₁₀H₁₅O₃PS₂ / (H₃CO)₂PSOC₆H₃(CH₃)SCH₃ Molecular mass: 278.3 Decomposes when heated Melting point: 7.5°C Relative density (water = 1): 1.25 Solubility in water at 20°C: none Vapour pressure at 25°C: negligible Relative vapour density (air = 1): 9.6 Flash point: 170°C Auto-ignition temperature: 365°C Octanol/water partition coefficient as log Pow: 3.17-4.8

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS OILY LIQUID WITH CHARACTERISTIC ODOUR. PALE YELLOWISH BRONZE LUMPS WITH METALLIC LUSTRE.

Physical dangers

Chemical dangers
Decomposes on heating. This produces toxic fumes including phosphorus oxides and sulfur oxides. Reacts with oxidants.

Formula: C₁₀H₁₅O₃PS₂ / (H₃CO)₂PSOC₆H₃(CH₃)SCH₃
Molecular mass: 278.3
Decomposes when heated
Melting point: 7.5°C
Relative density (water = 1): 1.25
Solubility in water at 20°C: none
Vapour pressure at 25°C: negligible
Relative vapour density (air = 1): 9.6
Flash point: 170°C
Auto-ignition temperature: 365°C
Octanol/water partition coefficient as log Pow: 3.17-4.8

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body in hazardous amounts by inhalation, through the skin and by ingestion. Effects of short-term exposure Cholinesterase inhibition. The substance may cause effects on the nervous system. This may result in convulsions and respiratory failure. The effects may be delayed. Medical observation is indicated.	Inhalation risk A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C; on spraying or dispersing, however, much faster. Effects of long-term or repeated exposure Cholinesterase inhibition. Cumulative effects are possible. See Acute Hazards/Symptoms.

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body in hazardous amounts by inhalation, through the skin and by ingestion.

Effects of short-term exposure
Cholinesterase inhibition. The substance may cause effects on the nervous system. This may result in convulsions and respiratory failure. The effects may be delayed. Medical observation is indicated.

Inhalation risk
A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C; on spraying or dispersing, however, much faster.

Effects of long-term or repeated exposure
Cholinesterase inhibition. Cumulative effects are possible. See Acute Hazards/Symptoms.

OCCUPATIONAL EXPOSURE LIMITS
TLV: 0.05 mg/m³, as TWA; (skin); A4 (not classifiable as a human carcinogen); BEI issued. MAK: (inhalable fraction): 0.2 mg/m³; peak limitation category: II(2); skin absorption (H)

ENVIRONMENT
The substance is very toxic to aquatic organisms. This substance does enter the environment under normal use. Great care, however, should be taken to avoid any additional release, for example through inappropriate disposal.

NOTES
The technical grade (95-98% pure) is a yellow to brown oil with a weak garlic-like odour. Carrier solvents used in commercial formulations may change physical and toxicological properties. Do NOT take working clothes home. 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.

NOTES

The technical grade (95-98% pure) is a yellow to brown oil with a weak garlic-like odour.
Carrier solvents used in commercial formulations may change physical and toxicological properties.
Do NOT take working clothes home.
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.

ADDITIONAL INFORMATION

EC Classification
Symbol: T, N; R: 21/22-23-48/25-50/53-68; S: (1/2)-36/37-45-60-61

All rights reserved. The published material is being distributed without warranty of any kind, either expressed or implied. Neither ILO nor WHO nor the European Commission shall be responsible for the interpretation and use of the information contained in this material.