| Product Identification | Back to Contents | 【Product Name】
Terbufos | 【Synonyms】
Contraven
Counter
S-(((1,1-Dimethylethyl)thio)methyl) O,O-diethyl phosphorodithioate
S-((1,1-Dimethylethyl)thio)methyl) O,O-diethyl phosporodithioate
S-tert-Butylthiomethyl O,O-diethyl phosphorodithioate
tert-Butylsulfanylmethylsulfanyl-diethoxy-sulfanylidenephosphorane | 【CAS】
13071-79-9 | 【Formula】
C9H21O2PS3 | 【Molecular Weight】
288.44 | 【EINECS】
235-963-8 | 【RTECS】
TD7200000 | 【RTECS Class】
Agricultural Chemical and Pesticide | 【Merck】
12,9301 | 【Beilstein/Gmelin】
1710115 | 【Beilstein Reference】
4-01-00-03092 | 【EC Index Number】
015-139-00-2 | 【EC Class】
Very toxic |
| Physical and Chemical Properties | Back to Contents | 【Appearance】
Technical product is a clear, colorless to pale yellow liquid. | 【Solubility in water】
15 mg/L | 【Melting Point】
-29 | 【Boiling Point】
320 | 【Vapor Pressure】
0.0006 (25 C) | 【Density】
1.1125 g/cm3 (20 C) | 【Partition Coefficient】
3.68 | 【Heat Of Vaporization】
53.9 kJ/mol | 【Usage】
Soil insecticide, nematicide. | 【Refractive Index】
1.5255 (20 C) |
| First Aid Measures | Back to Contents | 【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. Remove material from skin immediately. 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 | Back to Contents | 【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 | Back to Contents | 【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 a liquid organophosphorus pesticide. Hydrolyzes under alkaline conditions. | 【UN (DOT)】
2783 |
| Exposure Controls/Personal Protection | Back to Contents | 【Personal Protection】
Wear appropriate protective gloves, clothing and goggles. | 【Respirators】
Wear positive pressure self-contained breathing apparatus (SCBA). | 【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. |
| Fire Fighting Measures | Back to Contents | 【Flash Point】
88 | 【Fire Fighting】
This is a liquid organophosphorus pesticide. Wear positive pressure breathing apparatus and special protective clothing. Move container from fire area if you can do so without risk. Fight fire from maximum distance. Dike fire control water for later disposal; do not scatter the material.For small fires, use dry chemical, carbon dioxide, water spray, or foam. For large fires, use water spray, fog, or foam. | 【Fire Potential】
Moderate fire risk. |
| Accidental Release Measures | Back to Contents | 【Small spills/leaks】
This is a liquid organophosphorus pesticide. Keep unnecessary people away; isolate hazard area and deny entry. Stay upwind; keep out of low areas. Ventilate closed spaces before entering them. Remove and isolate contaminated clothing at the site. 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. Large spills: dike far ahead of spill for later disposal. |
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