TOLUIDINE BLUE O 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: Syn: Basic Blue 17; C.I. 52040; Tolonium Chloride. CAS No.: 92-31-9. Weight: 305.82 
	              Formula: C15H16CIN3S. EC No.: 202-146-2

2. HAZARDS: GHS Class:  Not a hazardous substance

HMIS: Health hazard  0, Flammability   0,  Physical hazards   0			
NFPA Rating: Health hazard 0, Fire     0, Reactivity hazard   0

Potential 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 / INGREDIENTS:
Chemical 				         CAS No.	  Percent		Hazardous
Toluidine Blue O                                                   92-31-9                                       	      No 

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. Consult physician.
Inhalation: Move to fresh air.  Consult a physician. Physician: Treat symptomatically and supportively. 

5. FIRE FIGHTING: Info: Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH & full PPE. Irritating & toxic gases may be generated by thermal decomp/combustion.  Hazards: Carbon, nitrogen, Sulfur oxides, hydrogen chloride gas. Extinguishing: Use water spray, dry chem, carbon dioxide, or alcohol-resistant foam. 
Flash Pt: Not available. Auto-ignition Temp: N/A. Explosion Limits: N/A

6. ACCIDENTAL RELEASE: Info: Use proper PPE as indicated in Section 8.  Spills/Leaks: 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 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 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 a safety shower. Use adequate ventilation to keep airborne concentrations low. 
Chemical 	                ACGIH                       NIOSH                  OSHA - Final / Vacated PELs 
Toluidine Blue O                      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. Clothing: Wear appropriate protective clothing to prevent skin exposure. Respirators: Follow the OSHA respirators 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: Appearance: 	Dark green powder 

10. STABILITY & REACTIVITY: Stability: Stable under normal temperatures & pressures. Avoid: Incompatibles, dust generation, excess heat. Incompatibilities: Oxidizing agents. Hazardous Decomposition Products: see section 5

11. TOXIC INFO: RTECS#: SP5670000. LD50: Intraperitoneal – rat – 215mg/kg
Carcinogenicity: Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA. Mutagenicity: Cytogenetic analysis 

12 ECOLOGICAL INFO: N/A  

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: Not regulated. 

15. REGULATORY INFO: SARA 311/312; None
Section 302 (RQ) & Section 302 (TPQ) None of the chemicals in this material/product have an RQ or TPQ. 
Section 313 No chemicals are reportable under Section 313. 
STATE CAS# 92-31-9 is not present on state lists from CA, MN, MA, FL. 
PA Right to Know:	Tolonium chloride  CAS#92-31-9  NJ Right to Know: Tolonium chloride  CAS#92-31-9
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# 92-31-9: No information available. 
Canada - DSL/NDSL CAS# 92-31-9 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.