关键词：标准 GB 生活饮用水 饮用水 生活饮用水卫生标准
1.名称
中文名称：灭草松；排草丹；苯达松；噻草平；百草克；
英文名称： bentazone; basagran; bentazone
2. 理化特性
化学式： C10H12N2O3S
分子质量：
性状：纯品为无色晶体
沸点：
熔点： 137-139℃
相对密度： 1.47
蒸气压： 0.46mPa (20℃)
挥发性：
溶解度： (g/kg/20℃) 丙酮 1507，苯 33；乙酸乙酯 650；乙醚 616； 环己烷 0.2；
三氯甲烷 180；乙醇 861； 水 570mg/L (PH 7, 20℃)
闪点：
自燃温度：
爆炸极限：
油水分配系数：
3.危险性
4.毒理
属低毒类。
急性毒性：
慢性毒性：
诱变性：
致癌性：
致畸性：
体内转归：
中毒机制：
| Synonyms |
Bentazon |
| Basagran |
| 3-(1-methylethyl)-1H-2,1,3-benzothiadiazin-4(3H)-one-2,2-dioxide |
| Analytical Methods |
EPA Method 515.1
EPA Method 515.2
EPA Method 555
EPA Method 643
EPA Method 8151 |
| |
| Molecular Formula |
C10H12N2O3S |
| Use |
CONTACT HERBICIDE Bentazon selectively controls many sedge weeds. SELECTIVE POSTEMERGENCE CONTROL OF MANY BROADLEAF WEEDS IN ALFALFA, ASPARAGUS, CEREALS, CLOVER, DIGITALIS, FLAX, GARLIC, GRASSES, LAWNS, NARCISSUS, ONIONS, ORNAMENTAL TURF, POTATOES, SORGHUM, SUGARCANE, SOYBEANS, RICE, CORN, PEANUTS, DRY BEANS, DRY PEAS, SNAP BEANS FOR SEED, GREEN (SUCCULENT) LIMA BEANS, & MINT. Controls a number of broadleaved and sedge weeds primarily by contact actionin most graminous and many large seeded leguminous crops. A post-emergence herbicide with activity against a wide range of broadleaf weeds, as well as yellow nutsedge. All types of beans, including soybeans, corn, sorghum, peanuts, peas, established alfalfa, lawns, rice are tolerant to bentazon/, while soybean and Canada thistle show differential activity. |
| Apparent Color |
COLORLESS CRYSTALLINE POWDER; WHITE CRYSTALLINE |
| Odor |
ODORLESS |
| Melting Point |
137-139 DEG C |
| Molecular Weight |
240.30 |
| Sensitivity Data |
Irritating to eyes and mucous membranes. Moderately irritating to skin, eyes, respiratory tract |
| Environmental Fate |
TERRESTRIAL FATE: HERBICIDAL ACTIVITY IS BRIEF, GIVING NO RESIDUAL PROBLEMS. TERRESTRIAL FATE: The aromatic ring of bentazon was hydroxylated in soil. At concentrations of 2 to 10 ppm, bentazon half-life = 2 to 5 weeks in soil. The hydroxybentazons could not be detected, possibly because they were immediately incorporated into the humic substances and fulvic acids. When soil was treated with bentazon, the major metabolite identified was 2-amino-N-isopropyl benzamide. TERRESTRIAL FATE: Bentazon does not persist in loamy sand soil. Within 15 wk, bentazon broke down quantitatively at room temperature and 15% soil moisture. Anthranilic acid-isopropylamide was identified. This broke down quickly. |
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