NAPHTHOL GREEN B
Safety Data Sheet
                  For Information call: DUDLEY 732-886-3100        Emergency Telephone Number:  1-800-424-9300    

DUDLEY CORPORATION
         	        125 Kenyon Drive
       				                 Lakewood, New Jersey 08701
                                                                                       Effective Date: January 1, 2025

1. PRODUCT: Syn: Acid Green 1; C.I. 10020; Pigment Green 12; D and C Green 1
CAS No.: 19381‑50‑1  EC No.: 243-010-2 	Weight: 878.47 	Formula: C30H15N3O15S3FeNa3

2. HAZARDS:  GHS Class:  Not a hazardous substance. 

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

3. COMPOSITION, INFO:
Chemical 				CAS No.			                Percent		Hazardous
Naphthol Green B			19381-50-1		                90-100		     No

4. FIRST AID: Eyes: Rinse with water Skin: Rinse with soap & water Ingestion: Do not induce vomiting without medical advice. Rinse with water. Inhalation: Move to fresh air.  Physician: Treat symptomatically & supportively. 

5. FIRE FIGHTING: Fire: Fire is possible at elevated temp or by contact with an ignition source. Explosion: May form a flammable/explosive dust cloud on mixing with air in the presence of a source of ignition. Extinguishing: Water spray, foam, CO2, dry powders, alcohol-resistant foam. Hazards: Carbon, nitrogen, Sulphur, sodium & iron oxides. Info: wear full PPE & NIOSH approved self‑contained breathing apparatus with full face-piece operated in the pressure demand or other positive pressure mode.

6. ACCIDENTAL RELEASE: Info: Remove all sources of ignition.  Ventilate area of leak or spill.  Clean‑up personnel may require protection from inhalation of dust.    Spills: Clean up spills in a manner that does not disperse dust into the air.  Use non‑sparking tools.  Pick up spill for recovery or disposal and place in a closed container.   

7. HANDLING & STORAGE: Handling: Avoid inhalation. Avoid contact with eyes, skin, and clothing.  Avoid prolonged or repeated exposure. Storage: Keep tightly closed containers.

8. EXPOSURE: 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 PELs
Naphthol Green B			                 None listed	None listed	None listed
		
PPE: Eyes: Use chemical safety goggles. Contact lenses should not be worn when working with this material.  Maintain eye wash fountain and quick‑drench facilities in work area. Skin: Wear protective gloves and clean body‑covering clothing 0.11mm thick nitrile.  Clothing: Wear appropriate protective clothing.  Respirators: For conditions where exposure to the dust is apparent, a dust/mist respirator may be worn.  For emergencies, a self‑contained breathing  apparatus may be necessary

9. PHYSICAL & CHEM: Appearance: Dark green powder. Solubility: Soluble Bulk Density: ca.620 kg/m3

10. STABILITY & REACTIVITY: Stability: Stable under ordinary conditions of use & storage. Haz Decomp: see section 5 Incompatibilities: Strong oxidizing agents.

11. TOXICOLOGICAL INFO: RTECS#: LJ8930000   Acute Oral Toxicity LD50: 8,200 mg/kg tested in rats.
Carcinogenicity:  Not listed by ACGIH, IARC, NTP, or CA Prop 65.

12. ECOLOGICAL INFO: LC50-Oryzias latipes -1,000 mg/l-48h

13. DISPOSAL CONSIDERATIONS: Disposal: Whatever cannot be saved for recovery may be burned in an approved incinerator or disposed in an approved waste facility. Ensure compliance with local. state, and federal regulations. Keep in a tightly closed container, stored in a cool, dry, ventilated area.  Protect against physical damage. Isolate from incompatible substances and sources of ignition. 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: Not regulated. 

15. REGULATORY INFO: SARA 311/312: None
SARA Section 302 Extremely Hazardous Substances None of the chemicals in this product have a TPQ/RQ.
Section 313 No chemicals are reportable under Section 313. 
STATE CAS# 19381-50-1 is not present on state lists from CA, MN, MA, FL. 
Pa & NJ Right to Know: Acid green 1  CAS#19381-50-1  
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 
Hazardous Symbols: Not available.	WGK (Water Danger/Protection) CAS# 19381-50-1: 1 
Canada - DSL/NDSL is listed on Canada’s DSL List. 
Canada – WHMIS:  This product has been classified in accordance with the hazard criteria of the CPS, and the SDS contains all the information required by the CPR.
CAS# 19381-50-1 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.