SPADNS

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:  1,8-Dihydroxy-2-(4-sulfophenylazo)naphthalene-3,6-disulfonic acid trisodium salt,  2-(4-Sulfophneylazo)chromotropic acid trisodium salt. Sulfanilin acid azochromotrop
CAS No.: 23647-14-5 E-C No.:245-803-9   Weight:  570.41g/mol 	Formula: C16H9N2Na3O11S3

2. HAZARDS ID: GHS Classification: 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 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									 CAS No.	 	Percent		
Trisodium 4,5-dihydroxy-3(4-sulphonatophenylazo)naphthalene-2,7-disulphonate 	23647-14-5             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. FIREFIGHTING: Info: Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH and full PPE. Irritating and highly toxic gases may be generated by thermal decomposition or combustion. Hazards: Carbon, sulfur, nitrogen, & sodium oxides. Extinguishing: Use water spray, dry chemical, 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 container for disposal.  Provide ventilation.

7. HANDLING & STORAGE: Handling: Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.     Use with adequate ventilation.  Storage: Keep container tightly closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

8. EXPOSURE CONTROLS: Facilities storing or utilizing this material should be equipped with an eyewash facility 
and safety shower. Use adequate ventilation to keep airborne concentrations low.
Chemical		ACGIH			NIOSH		OSHA Final /Vacated PELs
SPADNS		None listed		None listed		None listed

PPE: Eyes: Wear appropriate protective eyeglasses or safety goggles as described by OSHA’s eye and face
 protection regulations in 29CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure 0.11 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 whenever workplace conditions warrant a respirators.

9. PHYSICAL & CHEM: Appearance: Red to dark brown powder Bulk Density: ca.810 kg/m3

10. STABILITY & REACTIVITY: Stability: Stable under normal temps/pressures. Avoid: Incompatibles, excess heat, strong oxidants. Incompatibilities: Strong oxidizing agents. Haz Decomp: see 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 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 INFO: No information available.

15. REGULATORY INFO: SARA311/312: None Section 302: None of the chemicals in this product have an RQ or a TPQ.
Section 313: No chemicals are reportable under Section 313.

State: CAS# 23647-14-5 is not present on state lists from CA, MN, MA, FL. 
PA Right to Know:	Trisodium 4,5-dihydroxy-3(4-sulphonatophenylazo)naphthalene-2,7-disulphonate CAS#23647-14-5
NJ Right to Know: Trisodium 4,5-dihydroxy-3(4-sulphonatophenylazo)naphthalene-2,7-disulphonate CAS#23647-14-5
California Prop.65 components: 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:  XI              WGK (Water Danger/Protection): CAS# 23647-14-5: No information available.
Canada DSL/NDSL List: CAS# 23647-14-5 is listed on Canada’s DSL List.
Canada WHMIS: This product has a WHMIS classification of D2B.

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.