21452-14-2
AMICARTHIAZOL
CAS: 21452-14-2
Molecular Formula: C11H11N3OS
21452-14-2 - Names and Identifiers
21452-14-2 - Physico-chemical Properties
| Molecular Formula | C11H11N3OS |
| Molar Mass | 233.29 |
| Density | 1.375±0.06 g/cm3(Predicted) |
| Melting Point | 270-285 °C (decomp)(Solv: ethanol (64-17-5)) |
| Boling Point | 354.5±30.0 °C(Predicted) |
| Water Solubility | 999mg/L(temperature not stated) |
| pKa | 12.07±0.70(Predicted) |
| Storage Condition | Keep in dark place,Inert atmosphere,2-8°C |
| Physical and Chemical Properties | Chemical properties white crystalline powder. Melting point 222-224 ℃,275-285 ℃ decomposition, soluble in DMF, insoluble in water and general organic solvents. It is easy to decompose in alkaline medium. |
| Use | Use systemic fungicides, and the role of plant hormones. Soaking seeds with 0.25% to control kenaf anthracnose has a control effect of up to 100% for two consecutive years, and the seed dressing effect is also above 98%; the control effect of cereal smut and cotton corner spot is equivalent to Cyrite and Lianglisheng. It also has a control effect on rice bacterial blight and peanut rust. The main use of this product is seed dressing or soaking, and the general use amount is 0.3-0.5% of the seed weight. |
21452-14-2 - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | 26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| RTECS | XJ2700000 |
21452-14-2 - Uses and synthesis methods
Production method
the technological process is carried out according to the following steps:(1) synthesis (chlorination) of α-chloroacetanilide acetanilide and toluene are added into the reactor, thioyl chloride is added dropwise at about 20 ℃ under stirring, the reaction temperature is controlled at 25-30 ℃, the dropwise addition is completed in half an hour, and the heat preservation reaction is continued for 2.5h, I .e. toluene suspension of α-chloroacetanilide. (2) Seed dressing synthesis (condensation): the toluene suspension obtained in the first step is added with thiourea and water, the temperature is raised to reflux, and the reaction is half an hour. After the reaction is completed, let it stand and delaminate, the upper layer is a toluene layer, which can be recycled and applied, and the lower layer is an aqueous solution of seed dressing. Divide out the water layer, add water to dilute, add ammonia water under stirring and neutralize until pH 8. The precipitate generated by filtration is washed with water to be nearly neutral, and dried to obtain a white powdery product with a content of about 96%. The yield of p-acetanilide is about 8%. Raw material consumption quota: acetanilide (>98)880kg/t, thioyl chloride (100%)700kg/t, thiourea (>95%)410kg/t, ammonia water (25%)520kg/t.
category
Pesticides
Toxicity classification
Poisoning
Acute toxicity
oral-rat LD50: 1410 mg/kg
flammability hazard characteristics
Combustible; combustion produces toxic nitrogen oxides and sulfur oxide smoke
storage and transportation features
Warehouse ventilation low temperature drying
Fire extinguishing agent
Dry powder, foam, sand, carbon dioxide, mist water
Last Update：2024-04-09 21:01:54
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CAS: 21452-14-2
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
CAS: 21452-14-2
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
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