Name | benazolin |
Synonyms | ben-30 benazalox benazolin benasalox 4-chloro-2-oxobenzothiazol-3-ylaceticacid 4-chloro-2-oxo-3-benzothiazolineaceticaci 4-chloro-2-oxo-3-benzothiazolineaceticacid (4-chloro-2-oxobenzothiazol-3-yl)-aceticaci 4-chloro-2-oxo-3(2h)-benzothiazoleaceticaci (4-chloro-2-oxo-1,3-benzothiazol-3(2H)-yl)acetic acid 4-chloro-2,3-dihydro-2-oxo-1,3-benzothiazol-3-ylacetic acid |
CAS | 3813-05-6 |
EINECS | 223-297-0 |
InChI | InChI=1/C9H6ClNO3S/c10-5-2-1-3-6-8(5)11(4-7(12)13)9(14)15-6/h1-3H,4H2,(H,12,13) |
Molecular Formula | C9H6ClNO3S |
Molar Mass | 243.67 |
Density | 1.3274 (rough estimate) |
Melting Point | 192-196°C |
Boling Point | 468.4±55.0 °C(Predicted) |
Flash Point | 100°C |
Water Solubility | 0.6g/L(20 ºC) |
Vapor Presure | 1.42E-09mmHg at 25°C |
Color | White, crystalline solid |
pKa | 3.50±0.10(Predicted) |
Storage Condition | 0-6°C |
Refractive Index | 1.6300 (estimate) |
Physical and Chemical Properties | Colorless crystals. Melting point 193 °c. The solubility in water at 20 °c is 0.06%, and the alkali metal salts and amine salts of the acid are readily soluble in water. Rat acute oral LD50>3000mg/kg. Post-emergence conductive herbicide. |
Use | This is a kind of specific post-emergence conductive herbicide, which is used in rape field to control and propagate pig, and the dosage is 140 ~ 420g/ha. |
Risk Codes | R36/38 - Irritating to eyes and skin. R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
Safety Description | S22 - Do not breathe dust. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
UN IDs | UN 3077 |
RTECS | AF9700000 |
HS Code | 29342000 |
Toxicity | LD50 orl-rat: 3000 mg/kg 85ARAE 2,26,77 |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
toxicity | acute oral LD50>3000 mg/kg in rats. the non-effective dose of rats fed for 3 months was 300~1000 mg/kg per day. when fed with high dose, the liver was slightly enlarged after 30 days. Its potassium salt solution has a slight irritating effect on rabbit skin and eyes. Its ethyl ester is non-toxic to bees for acute oral LD50>5000mg/kg in rats, acute oral LD50>4000mg/kg in mice, acute percutaneous LD50>2100mg/kg, rainbow trout LC505.4 mg/L. |
use | selective post-bud herbicide with systemic conduction. It is mainly used for rape, grains, beans and other crops to prevent and remove broad-leaved weeds such as Stellaria, Swine, Passerine, field mustard, amaranth, dolphin, Xanthium and so on, with an amount of 2.25~4.5g of effective ingredients/100 m2, which is especially effective to cicamba and increase efficiency and control mother chrysanthemum and smelly chamomile. This agent is safe for subsequent crops. used to control broad-leaved weeds in rape fields this is a specific post-bud conductive herbicide, which is used to control pig calamity and strands in rape fields with an dosage of 140~420g/ha. suitable for weeding in sensitive crop rape field |
Production method | The reaction of o-chlorophenyl thiourea with ammonium thiocyanate to produce o-chlorophenyl thiourea, and then the chlorine gas cyclization to produce 2-amino -4-Chlorobenzothiazole, and then diazotization and hydrolysis to produce 2-hydroxy-4-chlorobenzothiazole, and finally react with ethyl chloroformate to form oxazole ethyl ester, which is hydrolyzed to obtain oxazole. |
category | pesticide |
toxicity classification | poisoning |
acute toxicity | oral-rat LD50: 3000 mg/kg; Oral-mouse LD50: 3200 mg/kg |
flammability hazard characteristics | combustible; combustion produces toxic nitrogen oxides, sulfur oxides and chloride gases |
storage and transportation characteristics | warehouse ventilation and low temperature drying; separate from food raw materials storage and transportation |
fire extinguishing agent | dry powder, foam, sand |