Molecular Formula | C17H19N5O6S |
Molar Mass | 421.43 |
Density | 1.532±0.06 g/cm3(Predicted) |
Melting Point | 162.0℃ |
Water Solubility | Solubility in water (g/l at 25 °C): 0.001 (pH 5) 0.003 (pH 6) 0.006 (pH 7) 0.032 (pH 8). |
Solubility | Solubility in organic solvents (g/l at 20 °C) Acetone 21.0 Ethyl acetate 5.0 Dichloromethane 50.0 n‐Hexane <0.001 Methanol 1.5 Toluene 1 |
Appearance | neat |
BRN | 9011949 |
pKa | Dissociation constant (pKa at 20 °C) 5.04 |
Storage Condition | 0-6°C |
Physical and Chemical Properties | Pure product is gray solid. Melting point 160.9~162.9 ℃, vapor pressure 2.2 × 10-5Pa (20 ℃), relative density 0.64 (20 ℃). The solubility in water is 0.17mg/L (pH = 5),6.52mg/L (pH = 7) and 549mg/L (pH = 9). The partition coefficient (n-octanol/fire) lgp at 20 ℃ is 3.36 (pH = 3),2.045 (pH = 5),1.69 (pH = 6), 1.41 (pH = 7) and 0.7 (pH = 8). Stable for 18 months at room temperature, stable for 12 months at 36 ℃ and stable for 3 months at 45 ℃. The half-lives in water are: 2.2d (pH = 5),5.1d (pH = 6),40d (pH = 7),91d (pH = 8). pK a5.04. |
Hazard Symbols | N - Dangerous for the environment |
Risk Codes | 50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
Safety Description | S60 - This material and its container must be disposed of as hazardous waste. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
UN IDs | UN 3077 9 / PGIII |
WGK Germany | 3 |
toxicity | rat acute oral LD50>5000mg/kg, rabbit acute percutaneous LD50>4000mg/kg, rats with acute inhalation of LC50>5.2mg/L (4H). It has no irritation to rabbit skin and mild irritation to rabbit eyes. Carp LC50>50mg/L, Trout LC50>7.7mg/L (72h). Daphnia LC50>9.1mg/L (48h). Wild duck acute oral LD50>1800mg/kg. |
Use | sulfonylurea herbicide, acetolactate synthase inhibitor. After the agent is absorbed by the weeds, it is transmitted in the plant body, and the weeds stop growing, the leaves are green, and the leaves are completely dead after a few weeks. For rice, wheat, barley and turf control of annual and perennial broadleaf weeds and Cyperaceae weeds. Such as the third floor of paddy field perennial water, water chestnut, wild water chestnut, dwarf Arrowhead, ehrgrass; Annual Cyperus papyrifera, flocks, not on the grass, duck tongue grass, node and the mother grass weeds; pre-treatment of wheat field seedlings to control the blue-glass traces, water spinach, medicinal cone corydalis, one year off the mountain Indigo, just Mao Mao Lotus, arabina, etc, medicinal cone corydalis, Ivy, bornata, etc. In spring, the post-treatment of seedlings was used to control the blue glass, wild European white mustard, water spinach, medicinal cone corydalis, pig, and the stem of the stem. The control effect on pig is better. For paddy field in the rice transplant after 2 ~ 15d application, the dose of 45~60g/hm2; Direct sowing rice field after 12d application, the dose of 10~40G/hm2; Wheat field seedling post-treatment, the dosage is 25~50g/hm2, the application in spring is better than that in autumn, and the application effect in late spring is better than that in early spring. In the post-treatment of seedlings in spring, some vegetable oils should be used as adjuvants, and the dosage is 25g/hm2. In the autumn application, the dose of 75~100g/hm2. It has been temporarily registered for the application of rice fields in China. |