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Chlorflurazole. EPA Chemical Profile. November 30, 1987


CAS Registry Number: 3615-21-2

EPA CHEMICAL PROFILE
Date: June 22, 1987
Revision: November 30, 1987

CHEMICAL IDENTITY -- BENZIMIDAZOLE, 4,5-DICHLORO-2-(TRIFLUOROMETHYL)-

CAS Registry Number: 3615-21-2

Synonyms:
Chlorflurazole;
Chloroflurazole;
4,5-Dichloro-2-Trifluoromethylbenzimidazole;
1H-Benzimidazole, 4,5-dichloro-2-(Trifluoromethyl)-;
NC 3363;
4,5-Dichloro-2-(Trifluoromethyl)-1H-Benzimidazole;
4,5-Dichloro-2-(Trifluoromethyl)benzimidazole

Chemical Formula: C8H3Cl2F3N2
Molecular Weight: 255.03

SECTION I -- REGULATORY INFORMATION
CERCLA (SARA) 1986:
Toxicity Value Used for Listing Under Section 302: LD50 oral (rat) 13.08 mg/kg (*NIOSH/RTECS 1985)

TPQ: 500/10,000 (pounds)

RQ: 1 (pounds) (statutory, for notification under SARA Section 304(a)(2))
Section 313 Listed (Yes or No): No

SECTION II -- PHYSICAL/CHEMICAL CHARACTERISTICS
Physical State: Solid
Boiling Point: Not Found
Specific Gravity (H2O=1): Not Found
Vapor Pressure (mmHg): 0.00004 mmHg (5.3 mPa) at 22.5C (*Spencer 1982)
Melting Point: 415-417F, 213-214C (*Spencer 1982)
Vapor Density (AIR=1): Not Found
Evaporation Rate (Butyl acetate=1): Not Found
Solubility in Water: 69 ppm @ 25C (*Spencer 1982)
Appearance and Odor: Crystalline solid, fine white needles when pure; brownish commercial material (*Spencer 1982)

SECTION III -- HEALTH HAZARD DATA
OSHA PEL: Not Found
ACGIH TLV: Not Found
IDLH: Not Found
Other Limits Recommended: Not Found

Routes of Entry: Inhalation: (Non-Specific -- Pesticide, solid, n.o.s.)
Yes (DOT 1984, Guide 53)

Skin: Not Found

Ingestion: (Non-Specific -- Pesticide, solid, n.o.s.) Yes (DOT 1984, Guide 53)

Health Hazards (Acute, Delayed, and Chronic): (Non-specific -- Pesticide, solid, n.o.s.) Poisonous if swallowed. Inhalation of dust poisonous (DOT 1984, Guide 53).

SECTION IV -- FIRE AND EXPLOSION HAZARD DATA
Flash Point (Method Used): (Non-Specific -- Pesticide, solid, n.o.s.) May burn, but does not ignite readily (DOT 1984, Guide 53).
Flammable Limits:
LEL: Not Found
UEL: Not Found

Extinguishing Methods: (Non-Specific -- Pesticide, solid, n.o.s.) Small fires: dry chemical, carbon dioxide, water spray, or foam. Large fires: water spray, fog, or foam (DOT 1984, Guide 53).

Special Fire Fighting Procedures: (Non-Specific -- Pesticide, solid, n.o.s.) Keep unnecessary people away; isolate hazard area and deny entry. Stay upwind; keep out of low areas. Wear self-contained (positive pressure if available) breathing apparatus and full protective clothing (DOT 1984, Guide 53).

Unusual Fire and Explosion Hazards: (Non-Specific -- Pesticide, solid, n.o.s.) Fire may produce irritating or poisonous gases. Runoff from fire control or dilution water may cause pollution (DOT 1984, Guide 53).

NFPA Flammability Rating: Not Found

SECTION V -- REACTIVITY DATA
Stability: Unstable:
Stable: Yes (*Spencer 1982)

Conditions to Avoid: Not Found
Incompatibility (Materials to Avoid): Amine salts of hormone herbicides, alkali-unstable fungicides or insecticides (*Spencer 1982)

Hazardous Decomposition or Byproducts: Not Found
Hazardous Polymerization: May Occur: Not Found May Not Occur: Not Found
Conditions to Avoid: Not Found

SECTION VI -- USE INFORMATION
This material is used as an herbicide (*Farm Chemicals Handbook 1984).

SECTION VII -- PRECAUTIONS FOR SAFE HANDLING AND USE (Steps to be Taken in Case Material is Released or Spilled)

(Non-Specific -- Pesticide, solid, n.o.s.) Do not touch spilled material; stop leak if you can do it without risk. Small spills: take up with sand or other noncombustible absorbent material and place into containers for later disposal. Small dry spills: with clean shovel place material into clean, dry container and cover; move containers from spill area. Large spills: dike far ahead of spill for later disposal (DOT 1984, Guide 53).

SECTION VIII -- PROTECTIVE EQUIPMENT FOR EMERGENCY SITUATIONS
For emergency situations, wear a positive pressure, pressure-demand, full facepiece self-contained breathing apparatus (SCBA) or pressure- demand supplied air respirator with escape SCBA and a fully-encapsulating, chemical resistant suit. See the introductory information section at the beginning of the profiles for additional information.

SECTION IX -- EMERGENCY TREATMENT INFORMATION
Signs and Symptoms of Exposure: Not Found Emergency and First Aid Procedures: (Non-Specific -- Pesticide, solid, n.o.s.) Move victim to fresh air; call emergency medical care. Remove and isolate contaminated clothing and shoes at the site. In case of contact with material, immediately flush skin or eyes with running water for at least 15 minutes (DOT 1984, Guide 53).