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3615-21-2

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Basic Information
CAS No.: 3615-21-2
Name: 4,5-dichloro-2-trifluoromethylBenzimidazole
Molecular Structure:
Molecular Structure of 3615-21-2 (4,5-dichloro-2-trifluoromethylBenzimidazole)
Formula: C8H3 Cl2 F3 N2
Molecular Weight: 255.026
Synonyms: 1H-Benzimidazole,4,5-dichloro-2-(trifluoromethyl)- (9CI); Benzimidazole, 4,5(or6,7)-dichloro-2-(trifluoromethyl)- (7CI); Benzimidazole,4,5-dichloro-2-(trifluoromethyl)- (8CI);4,5-Dichloro-2-trifluoromethylbenzimidazole; Chlorflurazole; Chloroflurazole;NC 3363
Density: 1.672g/cm3
Melting Point: 213.5°C
Boiling Point: 337.8°Cat760mmHg
Flash Point: 158.1°C
Solubility: 60mg/L(temperature not stated)
Safety: Poison by ingestion and intraperitoneal routes. A pesticide. When heated to decomposition it emits very toxic fumes of Cl−, NOx, and F−.
PSA: 28.68000
LogP: 3.88850
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Chemistry

IUPAC Name: 4,5-Dichloro-2-(trifluoromethyl)-1H-benzimidazole
Synonyms of 4,5-Dichloro-2-trifluoromethyl-benzimidazole (CAS NO.3615-21-2) : 1H-Benzimidazole, 4,5-dichloro-2-(trifluoromethyl)- ; 4,5-Dichloro-2-(trifluoromethyl)benzimidazole ; Chlorflurazole ; Benzimidazole, 4,5-dichloro-2-(trifluoromethyl)-
CAS NO:3615-21-2
Molecular Formula:C8H3Cl2F3N2
Molecular Weight :255.024030 g/mol
Molecular Structure :
Index of Refraction: 1.588 
Surface Tension: 44.4 dyne/cm
Density: 1.672 g/cm3
Flash Point: 158.1 °C
Enthalpy of Vaporization: 55.8 kJ/mol
Boiling Point: 337.8 °C at 760 mmHg
Vapour Pressure: 0.000201 mmHg at 25°C
Appearance: 4,5-Dichloro-2-trifluoromethyl-benzimidazole (CAS NO.3615-21-2) is fine white needles when pure; the commercial material is brownish.

Uses

 4,5-Dichloro-2-trifluoromethyl-benzimidazole (CAS NO.3615-21-2) is used as an herbicide.

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
chicken LD50 oral 34mg/kg (34mg/kg)   Guide to the Chemicals Used in Crop Protection. Vol. 6, Pg. 101, 1973.
mouse LD50 intraperitoneal 14mg/kg (14mg/kg)   Biochemical Pharmacology. Vol. 18, Pg. 1389, 1969.
rat LD50 oral 13080ug/kg (13.08mg/kg)   Pesticide Science. Vol. 15, Pg. 31, 1984.

Consensus Reports

EPA Extremely Hazardous Substances List.

Safety Profile

Poison by ingestion and intraperitoneal routes. A pesticide. When heated to decomposition it emits very toxic fumes of Cl−, NOx, and F−.

RIDADR :2588
HazardClass: 6.1(a)
PackingGroup: II

Specification

1.Reactivity Profile: 4,5-Dichloro-2-trifluoromethyl-benzimidazole (CAS NO.3615-21-2) is a halogenated amine. Neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen may be generated in combination with strong reducing agents, such as hydrides.
2.Health Hazard :(Non-specific -- Pesticide, solid, n.o.s.) Poisonous if swallowed. Inhalation of dust poisonous.
3.Fire Hazard: (Non-Specific -- Pesticide, solid, n.o.s.) Fire may produce irritating or poisonous gases. Runoff from fire control or dilution water may cause pollution. Avoid amine salts of hormone herbicides, alkali-unstable fungicides or insecticides.