- O-2-Ethylthioethyl O,O-dimethyl phosphorothioate
Pale yellow to colorless liquid with a characteristic odor.
Registry Numbers and Inventories.
EC Index Number
Agricultural Chemical and Pesticide
Swiss Giftliste 1
Boiling point, °C
Vapor pressure, mmHg
0.02 (25 C)
Vapor density (air=1)
1.1848 g/cm3 (20 C)
Solubility in water
1.498 (20 C)
Partition coefficient, pKow
Heat of vaporization
Hazards and Protection.
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protective gloves and clothing. Face shield or eye protection in combination with breathing protection.
Wear positive pressure self-contained breathing apparatus (SCBA).
Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Cover with plastic sheet to prevent spreading. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS.
Small Fires: Dry chemical, carbon dioxide or water spray. Large Fires: Water spray, fog or regular foam.
Combustible material: may burn but does not ignite readily.
Containers may explode when heated.
Fire may produce irritating, corrosive and/or toxic gases.
Abdominal cramps, vomiting, diarrhea, convulsions and unconsciousness. See inhalation.
Acute effects - pupillary constriction, muscle cramps, excessive salivation, sweating, nausea, dizziness, labored breathing, weakness. May affect the nervous system. Cholinesterase inhibitor. Effects may be delayed.
See Inhalation. May be absorbed through the skin.
Pupillary constriction, blurred vision.
Seek medical assistance.
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
Immediately flush with running water for at least 20 minutes.
I; II; III