Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information
Home > Phenyl-1,2,4-triazolyl-3-(O,O-diethyl thionophosphate) > Phenyl-1,2,4-triazolyl-3-(O,O-diethyl thionophosphate)(24017-47-8)

Phenyl-1,2,4-triazolyl-3-(O,O-diethyl thionophosphate)(24017-47-8)

Supplier Product Identification Physical and Chemical Properties First Aid Measures Handling and Storage Hazards Identification Exposure Controls/Personal Protection Fire Fighting Measures Accidental Release Measures Stability and Reactivity Transport Information

Product Identification

Product Name
Phenyl-1,2,4-triazolyl-3-(O,O-diethyl thionophosphate)
Synonyms
Diethoxy-[(1-phenyl-1,2,4-triazol-3-yl)oxy]-sulfanylidenephosphorane
Hostathion
O,O-Diethyl O-(1-phenyl-1H-1,2,4-triazol-3-yl) phosphorothioate
Triazophos
CAS
24017-47-8
Formula
C12H16N3O3PS
Molecular Weight
313.32
EINECS
245-986-5
RTECS
TF5635000
RTECS Class
Agricultural Chemical and Pesticide
Merck
12,9736
Beilstein/Gmelin
682554
EC Index Number
015-140-00-8
EC Class
Toxic; Harmful; Dangerous for the Environment

Physical and Chemical Properties

Appearance
Yellowish oil.
Solubility in water
39 mg/L (23 C)
Melting Point
0 - 8
Boiling Point
418
Vapor Pressure
4E-7 (25 C)
Density
1.247 g/cm3 (20 C)
pKa/pKb
9.15 (pKb)
Partition Coefficient
3.55
Heat Of Vaporization
67.1 kJ/mol
Usage
It is a broad spectrum insecticide and acaricide with some nematicidal properties. It controls aphids on cereals and fruit.

First Aid Measures

Ingestion
Seek medical assistance.
Inhalation
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.
Skin
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.
Eyes
Immediately flush with running water for at least 20 minutes.

Handling and Storage

Storage
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.
Handling
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.

Hazards Identification

Inhalation
Dyspnea, rales, bronchorrhea, bronchospasm, or tachypnea may be noted. Noncardiogenic pulmonary edema may occur in severe cases. Chemical pneumonitis may be seen.
Skin
Sweating is a consistent but not universal sign.
Eyes
Constriction of the pupil, tearing, and blurred vision are common. Prolonged dialation of the pupils may occur in severe poisonings. Opsoclonus has been reported in one case. Salivation commonly occurs.
Ingestion
Vomiting, hypersalivation, diarrhea, fecal incontinence and abdominal pain may occur.
Hazards
This is an organophosphate pesticide. Some of these materials may burn but none of them ignite readily. Container may explode in heat of fire. Degraded by acids and alkalis.
UN (DOT)
3018

Exposure Controls/Personal Protection

Personal Protection
Workers. Must be given personal protective equipment comprising overalls made of a tight fabric or polyvinyl chloride, gloves and rubber boots. The eyes should be protected by goggles.
Respirators
Must wear a respirator with an activated-carbon gas filter cartridge affording protection for a determined number of hours.
Exposure Effects
Fever, low heart rate and abnormally low blood pressure, or rapid heart rate and elevated blood pressure may occur. Headache, dizziness, muscle spasms and profound weakness are common. Alterations of level of consciousness, anxiety, paralysis, seizures and coma may occur. Seizures may be more common in children.
Poison Class
3

Fire Fighting Measures

Flash Point
135
Fire Fighting
This is an organophosphate pesticide. Keep unnecessary people away; isolate hazard area and deny entry. Stay upwind; keep out of low areas. Ventilate closed spaces before entering them. Wear positive pressure breathing apparatus and special protective clothing. Remove and isolate contaminated clothing at the site. Move container from fire area if you can do it without risk. Fight fire from maximum distance. Dike fire control water for later disposal; do not scatter the material.Extinguish with dry chemical, carbon dioxide, water spray, fog, or foam.
Fire Potential
Combustible material: may burn but does not ignite readily.

Accidental Release Measures

Small spills/leaks
Avoid inhalation and skin contact. This is an organophosphate pesticide. Do not touch spilled material; stop leak if you can do so without risk. Use water spray to reduce vapors. Small spills: absorb with sand or other noncombustible absorbent material and place into containers for later disposal. Small dry spills: with clean shovel, place material into clean, dry container and cover; move containers from spill area. Large spills: dike far ahead of spill for later disposal.

Stability and Reactivity

Stability
Stable to sunlight.
Combustion Products
Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number
3018
Hazard Class
6.1
Packing Group
I; II; III
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