NITROSO-R-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:  1-Nitroso-2-naphthol-3,6-disulfonic acid 	CAS No.: 525-05-3 
E-C No.:208-369-1     Weight:  377.26g/mol 	Formula: C10H5NNa2O8S2

2. HAZARDS ID: GHS Class: Acute toxicity, Inhalation (Category 2) Acute toxicity, Dermal (Category 2)
Acute toxicity, Oral (Category 2)   Skin Corrosion (Cat 2)   Serious Eye Damage (Cat. 2)  Specific Target organ                                      toxicity (single exposure) Respiratory System (Cat 3)		
Pictogram: 					
Signal Word:         WARNING
HAZARD STATEMENT(S): H302 + H312 + H332: Harmful if swallowed, in contact with skin or inhaled	
PRECAUTIONARY STATEMENT(S): P261: Avoid breathing dust/spray/ fume/gas/ mist/ vapors. P264: wash skin thoroughly after handling P270: Do not drink, eat, smoke, when using this product. P271: Use only outdoors or in well-ventilated area.  P280: Wear protective gloves/eye & face protection P330: Rinse mouth P301 + P312: If Swallowed: Call Poison Center or doctor/physician if you feel unwell P302 + P352: If on skin gently wash with plenty of soap & water. P304 + P340: If inhaled: remove to fresh air and keep at rest in a position comfortable for breathing. P312: Call Poison Center or doctor/physician if you feel unwell P322: Specific measures (see supplemental first aid instructions) P363: Wash contaminated clothing before reuse.  P501: Dispose of contents/container to an approved waste disposal plant.

HMIS Classification: Health hazard  2, Flammability   0,  Physical hazards   0			
NFPA Rating: Health hazard  2, Fire     0, Reactivity hazard   0
2.3: Other Hazards: none

3. COMPOSITION / INFO ON INGREDIENTS: 
Chemical Name			 CAS No.	 	Percent		
Nitroso R-Salt	               		 525-05-3                   ~100%                  

4. FIRST AID: Eyes: Rinse immediately with plenty of water for 15 min. 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. Irritating & highly toxic gases may be generated by thermal decomposition or combustion. Runoff from fire control or dilution water cause pollution. Special Hazards: Carbon, nitrogen, sodium & sulphur oxides. Extinguishing: Use water spray, dry chemical, CO2, 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 Sec 8. Spills/Leaks: Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment Section. Avoid generating dusty conditions. Provide ventilation.  

7. HANDLING & STORAGE: Handling: Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation & accumulation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. Storage: Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatibles. 

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 
1-Nitroso-2-Naphthol-3,6- Disulfonic Acid Disodium Salt HY           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 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: Yellow crystalline powder Melting Pt: 300˚C (572˚F) 

10. STABILITY & REACTIVITY: Stability: Stable under normal temp/pressures. Avoid: Incompatibles, dust generation, excess heat, strong oxidants. Incompatibilities: Oxidizing agents.  Haz Decomp: see section 5

11. TOXIC INFO: RTECS#: QJ6480000 LD50/LC50: N/A Carcinogenicity: Not by ACGIH, IARC, NIOSH, NTP, or OSHA. 

12. ECOLOGICAL INFO: Environmental Fate/ toxicity: 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: Not Regulated

15. REGULATORY INFO:  SARA 311/312:  Acute Health Hazard. 
Section 302 (RQ) & Section 302 (TPQ) None of the chemicals/materials have a RQ or TPQ. 
Section 313 No chemicals are reportable under Section 313. 
 
STATE CAS# 525-05-3 is not present on state lists from CA, MN, MA, FL. 
PA/NJ Right to Know: Disodium 3-hdyroxy-4-nitrosonaphthalene-2,7-disulphonate  CAS#525-05-3
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# 252-05-3: No information available. 
Canada - DSL/NDSL CAS# 525-05-3 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.