CRESOL RED SODIUM SALT
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: o-Cresolsulfonephthalein Sodium Salt CAS No.: 62625-29-0.  EC-No.: 263-654-8   Weight: 404.42.  Formula: C21H17NaO5S

2 .HAZARD ID: GHS:  Not a hazardous substance. 	

HMIS Classification: Health hazard:  0, Flammability:  0, Physical hazard:  0
NFP Rating:  Health hazard:  0, Fire:  0, Reactivity hazard:  0
2.3: Other Hazards: none

3. COMPOSITION/INFO
Name         		CAS No. 		               Percent		
Cresol Red Sodium Salt          62625-29-0                   	100%                        

4. FIRST AID: Eyes: Flush eyes with plenty of water as a precaution.   Skin: If contact flush skin with plenty of soap & water.  Ingestion: If victim is conscious and alert, give water to rinse mouth. Never give anything by mouth to an unconscious person. Do Not induce vomiting.  Inhalation:  Remove to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.    Physician: Treat symptomatically and supportively.

5. FIREFIGHTING: Info: Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH & full PPE. Irritating & highly toxic gases may be generated by thermal decomp or combustion. Extinguishing:  use water spray to cool fire expose containers. Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide. Hazards:  Carbon, Sulphur, & Sodium oxides. 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: Vacuum or sweep up material and place into a suitable disposal container. 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, skin, and clothing. Avoid breathing dust.  
Storage: Store in a cool, dry place. Store in a tightly closed container away from incompatible substances. 

8. EXPOSURE CONTROLS, PPE:  Facilities storing or utilizing this material should be equipped with an eyewash facility and safety.  Use adequate ventilation to keep airborne concentrations low.

Chemical Name		ACGIH			NIOSH		OSHA-Final PEL’s
Cresol Red 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 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary. 

9.  PHYSICAL & CHEM: Red-brown powder.   Melting Pt: 249-251° C (482°F) (dec.) Solubility: Soluble, 

10. STABILITY & REACTIVITY: Stability: Stable at room temp in closed containers under normal storage & handling conditions.  Avoid: Dust generation. Incompatibilities: Strong oxidizing agents Hazardous Decomp Products: section 5

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

12. ECOLOGICAL INFO: No data available.

13.  DISPOSAL CONSIDERATIONS: Chemical waste generators must determine whether a discarded chemical is classified as a hazardous waste. U.S. 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 information.  RCRA P-Series: None listed.  RCRA U-Series: None listed. 

14.  TRANSPORT INFO: Not dangerous goods.

15.  REGULATORY INFO: SARA 311/312 Hazards:  No SARA Hazard 
SARA Section 302 (RQ) and Section 302 (TPQ) None of the chemicals in this material have an RQ/TPQ.
Section 313 No chemicals are reportable under Section 313.

STATE   CAS# 62625-29-0 is 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(2-methylphenolate) S.,S-dioxide     CAS#62625-29-0
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# 62625-29-0:1 
Canada - DSL/NDSL   CAS# 62625-29-0 is listed on Canada’s DSL List.
Canada -WHMIS:   This product has a WHMIS classification of not controlled.
Canadian Ingredient Disclosure List 
CAS# 62625-29-0 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.