THYMOL BLUE SODIUM SALT ACS
Safety Data Sheet
Emergency Telephone Number: CHEMTREC 1-800-424-9300	For Information call: DUDLEY 732-886-3100        
DUDLEY CORPORATION
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Effective Date: January 1, 2025
1. PRODUCT: Syn: Thymol blue sodium salt; Thymol blue sodium. CAS No.: 62625-21-2. Weight: 488.58.  
                            EC-No.: 263-650-6    Formula: C27H29NaO5S. 

2. HAZARDS: GHS Class: None

HMIS Class: 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 / INFO ON INGREDIENTS: 
Chemical 				          CAS No.		Percent		Hazardous
Thymol blue sodium salt                                                  62625-21-2       	100%                         No

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

5. FIRE FIGHTING: Info: Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH & full PPE. Water mist may be used to cool closed containers. Extinguishing: Use dry chemical, CO2, water spray or alcohol resistant foam.  Hazards:  Carbon oxides, Sulphur & sodium oxides.       

6. ACCIDENTAL RELEASE: Info: Use proper PPE as indicated in Section 8. Spills/Leaks: Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. 

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

8. EXPOSURE: Controls: Use adequate ventilation to keep airborne concentrations low. 
Chemical 	               	ACGIH               	NIOSH                        OSHA - Final /Vacated PELs 
Thymol blue sodium salt     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 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: Melting Pt: 283-285˚C 

10. STABILITY & REACTIVITY: Avoid: High temp, incompatibles. Stability: Materials containing similar functional groups can decompose at elevated temps. Incompatibilities: Strong oxidizers. Haz Decomp: see section 5

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

12. ECOLOGICAL INFO: No data. 

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: None Section 302 None of the chemicals in this product have a TPQ/RQ
Section 313 No chemicals are reportable under Section 313. 
STATE CAS# 62625-21-2 s not present on state lists from CA, MN, MA, FL. 
PA/NJ Right to Know: Sodium hydrogen 4,4’-(3H-2,1-benzoxathiol-3-ylidene)bis[5-methyl-2-(1-methylethyl)phenolate] S,S-dioxide  CAS#62625-21-2
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# 62625-21-2: No information available. 
Canada - DSL/NDSL CAS# 62625-21-2 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.