4-(2-PYRIDYLAZO)RESORCINOL

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:  PAR 	CAS No.: 1141-59-9     E-C No.:214-528-6 Weight:  215.21g/mol 	Formula: C11H9N3O2

2. HAZARDS ID: GHS Class:  	Not a hazardous substance or mixture.

HMIS: Health hazard  0, Flammability   0,  Physical hazards   0			
NFPA Rating: Health hazard  0, Fire     0, Reactivity hazard   0
2.3: Other Hazards: none

3. COMPOSITION / INFO: 
Chemical				 CAS No.	 	Percent		
4-(2-PYRIDYLAZO)RESORCINOL          1141-59-9               90-100%                  

4. FIRST AID: Eyes: rinse with water Skin: Rinse with plenty of soap & water Ingestion: Do not induce vomiting without medical advice. Rinse with water. Inhalation: Move to fresh air.   Physician: Treat symptomatically and supportively. 

5. FIRE FIGHTING: Info: wear as self-contained breathing apparatus in pressure-demand, MSHA/NIOSH, & full PPE. Irritating & highly toxic gases may be generated by thermal decomp/combustion. Runoff from fire control or dilution water may cause pollution. Haz: Carbon & nitrogen oxides. Extinguishing: Use water spray, dry chem, CO2, or alcohol-resistant foam. 

6. ACCIDENTAL RELEASE:  Info: Use proper PPE as indicated in Sect 8. Spills/Leaks: Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the PPE Section. Avoid generating dusty conditions. Provide ventilation. 

7. HANDLING & STORAGE: Handling: Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation & accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Storage: Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatibles. 

8. EXPOSURE: Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low. 
Chemical  		       ACGIH 		 NIOSH 		OSHA - Final / Vacated PELs 
4-(2-Pyridylazo) Resorcinol    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 EN 166. Skin: Wear appropriate protective gloves to prevent skin exposure. 0.11mm thick nitrile. Clothing: Wear appropriate protective clothing to minimize contact with skin. Respirators: Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 Approved respirators when necessary.

9. PHYSICAL & CHEM:  Appearance: Orange powder. Melting Pt: 187˚C (369˚F) 

10. STABILITY & REACTIVITY: Stability: Stable under normal temp/pressures. Avoid: Incompatibles, dust generation, excess heat, strong oxidants. Incompatibilities: Oxidizing agents.   Haz Decomp: see section 5

11. TOXICOLOGICAL INFO:  RTECS#: unlisted. LD50/LC50: N/A. Carcinogenicity: Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA. 

12. ECOLOGICAL INFO: No info. 

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 REGULATIONS:  No info. 

15. REGULATORY INFO: SARA 311/312/313: None
Section 302 (RQ) & Section 302 (TPQ) None of the chemicals in this material have an RQ or TPQ. 
STATE  is not present on state lists from CA, MN, MA, FL. 
PA & NJ Right to Know:	4-(2-Pyridylazo)resorcinol  CAS#1141-59-9
California Prop.65: None of the chemicals are known to cause cancer, birth defects, or any other reproductive harm.

EUROPEAN/INTERNATIONAL REGULATIONS European Labeling in Accordance with EC Directives 
Hazard Symbols: Not available. WGK (Water Danger/Protection) CAS# 1141-59-9: No information available. 
Canada - DSL/NDSL CAS# 1141-59-9 is listed on Canada’s NDSL List. 
Canada - WHMIS WHMIS: Not available.  Canadian 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.