Structural formula
 

Common name Chlorbenzuron
Product name 2-Chlorobenzoic acid 2-(4-chlorobenzoyl)hydrazide
CAS number 196791-54-5
Molecular weight 309.147
Density 1.4±0.1 g/cm3
Boiling point 560.0±50.0 ? at 760 mmHg
Molecular formula C14H10Cl2N2O2
Melting point N/A
MSDS N/ A
Flash point 292.5±30.1 °C

Uses
1. Benzoylurea insecticides inhibit chitin synthesis in insects, hinder larvae from peeling, and cause the insects to develop abnormally and die. It is mainly gastric poisoning, but also has contact killing effects. It has the advantages of high efficiency, low toxicity, long residual effect and no environmental pollution. It has good treatment effect on wheat armyworm, pine caterpillar, cabbage caterpillar, American white moth, mosquitoes and flies and other pests. Use 25% suspension agent to spray 500-1000 times liquid for cabbage caterpillar fungus, and 2500-5000 times liquid spray to control citrus leaf miner. Not suitable for use near mulberry gardens.

NameProduct

name Chlorbenzuron

Physical and chemical properties Density 1.4±0.1 g/cm3 Boiling point 560.0±50.0 °C at 760 mmHg Molecular formula C14H10Cl2N2O2 Molecular weight 309.147 Flash point 292.5±30.1 °C Accurate mass 308.011932 LogP 3.15 Vapor pressure 0.0±1.5 mmHg at 25°C Refractive index 1 .623 stability No obvious irritation to rabbit eyes and skin. Animal tests have found no teratogenic, carcinogenic, or mutagenic effects. There is no cumulative effect in animals. Safe for fish, birds, predators, bees.

Molecular structure
1. Molar refractive index: 78.22

2. Molar volume (cm3/mol): 221.9

3. Isotonic specific volume (90.2K): 600.8

4. Surface tension (dyne/cm): 53.7

5. Polarizability (10-24cm3): 31.01

1. Physical property data

1. Properties: The original drug is white crystal.

2. Density (g/mL, 25/4?): Uncertain

3. Relative vapor density (g/mL, air=1): Uncertain

4. Melting point (ºC): 19~201

5. Boiling point (ºC, 0.67kpa or 5 mmHg): Unsure

6. Refractive index: 1.5221

7. Flash point (ºC): Unsure

8. Specific rotation (ºC): Uncertain

9. Autoignition point or ignition temperature (ºC) is uncertain

10. Vapor pressure (kPa, 25ºC): Unsure

11. Saturated vapor pressure (kPa, 60ºC): Uncertain

12. Heat of combustion (KJ/mol): Unsure

13. Critical temperature (ºC): Uncertain

14. Critical pressure (KPa): Uncertain

15. Log value of oil-water (octanol/water) partition coefficient: Uncertain

16. Explosion upper limit (%, V/V): Unsure

17. Lower explosion limit (%, V/V): Uncertain

18. Solubility: Its original solubility in acetone is 10g/L. It is soluble in organic solvents such as dimethylformamide and pyrrole, but is insoluble in water. It is easy to decompose when exposed to alkali or strong acid. It is relatively stable when stored under normal conditions and is also stable to light and heat.

Toxicity and ecology 

Toxicological data:

No obvious irritation to rabbit eyes and skin. Animal tests have found no teratogenic, carcinogenic, or mutagenic effects. There is no cumulative effect in animals. Safe for fish, birds, predators, bees.

The acute oral LD50 of the original drug in rats is >20000mg/kg (15000mg/kg)