Α-NAPHTHOLPHTHALEIN

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: Syn:  3,3-Bis(4-hdyroxy-1-naphthyl)phthalide CAS No.: 596-01-0 E-C No.:209-875-5  Weight:  418.44g/mol 	 Formula: C28H18O4

2. HAZARDS ID: GHS Classification:	Not a hazardous substance.

HMIS Class: 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 ON INGREDIENTS: 
Chemical						 CAS No.	 	Percent		
3,3-Bis(4-hdyroxy-1-naphthyl)phthalide	                  596-01-0                90-100%                  

4. FIRST AID: Eyes: Rinse with plenty of 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 & supportively. 

5. FIRE FIGHTING: Info: Wear self-contained breathing apparatus in pressure-demand, MSHA/NIOSH & full PPE. Irritating & highly toxic gases may be generated by thermal decomp/combustion. Hazards: Carbon oxides. Extinguishing: Use water spray, dry chem, carbon dioxide, or alcohol-resistant foam. 

6. ACCIDENTAL RELEASE: Info: Use proper PPE as indicated in Section 8. Spills/Leaks: Clean up spills immediately, observing precautions in the PPE section. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. 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 and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.  Storage: Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed. 

8. EXPOSURE: Facilities storing or utilizing this material should be equipped with any eyewash facility and safety shower.  Use adequate ventilation to keep airborne concentrations low.
Chemical 			ACGIH 			NIOSH		OSHA – Final/Vacated PEL’s
Alpha-naphtholphthalein		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 thick 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 respirators when necessary. 

9. PHYSICAL & CHEM: Appearance: Dark pink-brown powder. Vapor Density: 14.44 (Air=1.0) Melting Pt: 238-240°C

 10.  STABILITY & REACTIVITY: Stability: Stable under normal temp/pressures. Avoid: Incompatibles, dust generation, strong oxidants. Incompatibilities: Strong 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 Other: May cause respiratory irritation 

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 class. RCRA P-Series: None listed. RCRA U-Series: None listed. 

14. TRANSPORT INFO: Not regulated. 

15. REGULATORY INFO:  SARA 311/312: None
Section 302 (TPQ/RQ) None of the chemicals in this product have a TPQ/RQ. 
Section 313 No chemicals are reportable under Section 313. 
STATE: CAS# 596-01-0 is not present on state lists from CA, MN, MA, FL. 
PA & NJ Right to Know:	3,3-Bis(4-hydroxy-1-naphthyl)phthalide  CAS#596-01-0
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 
WGK (Water Danger/Protection) CAS#596-01-0:  No information available.
Canada – DSL/NDSL: None of the chemicals in this product are listed on DSL or NDSL list.
Canada – WHMIS:  Not available. CAS#596-01-0  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.