EOSIN B CERTIFIED

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: Acid Red 91; 4', 5'-Dibromo-2', 7'-Dinitrofluorescein, Disodium Salt; Eosin Bluish; C.I. 45400. 
CAS No.: 548-24-3. Weight: 624.05. Formula: C20H6Br2Na2O9.  

2. HAZARDS ID: GHS:  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

Potential Health Effects: Eye: Risk of serious damage to eyes.	Skin: Harmful in contact with skin. 
Ingestion: Harmful if swallowed. 		Inhalation: Harmful by inhalation. 
2.3: Other Hazards: none

3. COMPOSITION / INFO: 
Chemical Name				CAS No.		Percent	     Hazardous
Eosin B                                               		548-24-3            	85%                  No. 

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

5. FIRE FIGHTING: Info: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH,& full PPE. Irritating and highly toxic gases may be generated by thermal decomp or combustion.  Hazards: Carbon, nitrogen & sodium oxides, Hydrogen bromide gas. Extinguishing: Use water spray, dry chemical, carbon dioxide, or alcohol-resistant foam. Flash Pt: N/A. Auto-ignition Temp: N/A. Explosion Limits: N/A

6. ACCIDENTAL RELEASE:  Info: Use proper PPE as indicated in Section 8. Spills/Leaks: Reduce airborne dust and prevent scattering by moistening with water. Clean up spills immediately, observing precautions in the Protective Equipment 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. Use only in a well-ventilated area. Minimize dust generation and accumulation. Avoid contact with eyes, and clothing. 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 / PPE: Use adequate ventilation to keep airborne concentrations low. 
Chemical Name              ACGIH                           NIOSH                    OSHA – Final/Vacated PELs 
Eosin B                              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 29 CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator, when necessary. 				

9. PHYSICAL & CHEM: Appearance: Brown to dark green or red powder. Odor: Odorless. 

10. STABILITY & REACTIVITY: Stability: Stable under normal temp & pressures. Avoid: Incompatibles. Incompatibilities: Oxidizing agents.  Hazardous 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 information available. 

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 information available. 

15. REGULATORY INFO: SARA 311/312: None
Section 302 (RQ) & Section 302 (TPQ) None of the chemicals in this material or products have a RQ or TPQ. 
Section 313 No chemicals are reportable under Section 313. 
STATE: CAS# 548-24-3 is not present on state lists from CA, PA, MN, FL, or NJ. 
California No Significant Risk Level: None of the chemicals in this product are listed. 

EUROPEAN/INTERNATIONAL REGULATIONS:  European Labeling in Accordance with EC Directives 
Hazard Symbols: Not available. WGK (Water Danger/Protection) CAS# 548-24-3: No information available. 
Canada - DSL/NDSL CAS# 548-24-3 is listed on Canada’s DSL List. 
Canada WHMIS: Not available. 

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.