BENZIMIDAZOLE
Safety Data Sheet
Emergency Telephone Number: CHEMTREC 1-800-424-9300       For Information call: DUDLEY 732-886-3100     
    DUDLEY CORPORATION        
                      125 Kenyon Drive
       				          	    Lakewood, New Jersey 08701
Effective Date: January 1, 2025
1. PRODUCT ID: Syn: 3-Azaindole; o-Benzimidazole; 1,3-Benzodiazole; Benzoimidazole 
CAS No.: 51-17-2    EC-No.: 200-081-4	Weight: 118.14	Formula: C7H6N2

2.HAZARDS ID: GHS:  Acute Toxicity, Oral (Cat. 4), Acute Aquatic Hazard (Cat. 3)
Pictogram					
Signal word: WARNING
Haz. Statement: H302: Harmful if swallowed. H402: Harmful to aquatic life. 
Precautionary Statement: P264: Wash skin thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P273: Avoid release into environment. P301+P330+P312: IF Swallowed: Call a Poison Center / Doctor if you feel unwell. Rinse mouth. P501: Dispose of contents/container to an approved waste disposal plant. 
HMIS Classification:  Health Hazard:  1,    Flammability:  0    Physical Hazards:  0
NFPA Rating:   Health Hazard:   0    Fire:  0   Reactivity Hazard:  0

Potential Effects: Chronic: No information found. Eyes: No information Skin: No information Ingestion: The toxicological properties of this substance have not been fully investigated. Inhalation:  The toxicological properties of this material have not been fully investigated.
2.3: Other Hazards: none

3.  COMPOSITION: 
Chemical Name			CAS No.           Percent                    Hazardous
Benzimidazole                                           51-17-2                98                               No

4. FIRST AID: Eyes: Flush eyes with plenty of water as precaution. Skin: flush skin with plenty of soap & water. Ingestion: If victim is conscious and alert, give water to rinse mouth. NEVER give anything by mouth to an unconscious person.  Do NOT induce vomiting.  Inhalation: Remove to fresh air. If not breathing, give respiration.  Physician: Treat symptomatically and supportively.

5. FIRE FIGHTING: Info: wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH, & full PPE. Irritating & highly toxic gases may be generated by thermal decomp/combustion. Extinguishing: dry chemical, carbon dioxide or alcohol-resistant foam. Hazards:  Carbon & nitrogen oxides. Flash Pt: N/A Auto-ignition Temp: N/A Explosion, N/A.
  
6. ACCIDENTAL RELEASE: Info: Use proper PPE as indicated in Section 8. Spills: Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Provide ventilation. 

7. HANDLING & STORAGE: Handling: Wash thoroughly after handling. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Storage: Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.  

8. EXPOSURE: Facilities storing or utilizing this material should be equipped with an eyewash facility and safety shower.  Use adequate ventilation to keep airborne concentrations low.
Chemical 			ACGIH		NIOSH		OSHA - Final / Vacated PEL’s
Benzimidazole			None listed	None listed	 None listed

PPE: Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA’s eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure 0.11mm nitrile. Clothing: Wear appropriate protective clothing to prevent skin exposure. 
Respirators: Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary. 

9. PHYSICAL & CHEM: Slightly beige brown powder Melting Pt: 169 – 171 ° C (336 - 340° F)     
Boiling Pt: > 360°C Solubility: Freely soluble in alcohol, sparingly soluble in ether.  Practically insoluble in benzene.

10. STABILITY & REACTIVITY: Avoid: Not available. Stability: Stable at room temp in closed containers under normal storage & handling. Incompatibilities: Strong oxidizing agents. Haz Decomp:  see section 5

11. TOXICOLOGICAL INFO: RTECS:: DD5425000    LD50: Oral, mouse: 2910 mg/kg:
Carcinogenicity: CAS# 51-17-2: Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA. 

12. ECOLOGICAL INFO: Environmental Fate & Toxicity: water flea – 55.5mg/l – 48h, fresh water algae >200 mg/l – 72h , Bacteria >500 - < 1,000 mg/l – 192 H
	
13. DISPOSAL CONSIDERATIONS: Chemical waste generators must determine whether a discarded chemical is classified as a hazardous waste. US EPA guidelines for the classification determination are listed in 40 CFR Parts 261.3. Additionally, waste generators must consult state and local hazardous waste regulations to ensure complete and accurate classification.         RCRA P-Series: None listed.         RCRA U-Series: None listed. 

14. TRANSPORT INFO: Not regulated.

15. REGULATORY INFO: Section 313    No chemicals are reportable under Section 313. 
 SARA Section 302 Extremely Hazardous Substances: None of the chemicals in this product have RQ/TPQ
STATE CAS# 51-17-2 is not present on state lists from CA, MN, FL. 
Pa Right to Know:  Benzimidazole  NJ Right to Know:  Benzimidazole.
California No Significant Risk Level: None of the chemicals in this product are listed. 

EUROPEAN/INTERNATIONAL REGULATIONS European Labeling in Accordance with EC Directives 
WGK (Water Danger/Protection) CAS# 51-17-2: No information available. 
Canada - DSL/NDSLCAS# 51-17-2  is listed on Canada’s NDSL List.  Canada - WHMIS: Not available. 
CAS# 51-17-2   is not listed on Canada’s Ingredient Disclosure List. 

16. DISCLAIMER INFO: DUDLEY CORPORATION provides the information herein in good faith but makes no representation as to its comprehensiveness or accuracy. This document is intended only as a guide to the appropriate precautionary handling of the material by a properly trained person using this.  Individuals receiving the information must exercise their independent judgment in determining its appropriateness for a particular purpose. DUDLEY CORPORATION makes no representations or warranties, either expressed or implied, including without limitation and warranties of merchantability, fitness for a particular purpose with respect to the information set forth herein or to the product to which the information refers. Accordingly, DUDLEY CORPORATION will not be responsible for damages resulting from the use of or reliance upon this information.