SUDAN BLACK B 

Safety Data Sheet
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    DUDLEY CORPORATION
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Effective Date: January 1, 2025
1. PRODUCT: Syn: CI 26150, Flat Black HB, Solvent Black 3. CAS No.: 4197-25-5. EC-No.: 224-087-1  Weight: 456.54. Formula: C29H24N6. 

2. HAZARDS: GHS:  Germ Cell Mutagenicity (Cat. 2)
PictoGram
Signal Word: WARNING				
Hazard Statement: H341: Suspected of causing genetic defects. 
Precautionary Statement: P201: Obtain special instructions before use. P202: Do no handle until all safety precautions have been read and understood. P280 Wear PPE P308 + P313: If exposed or concerned Get medical attention P405: Store locked up. P501: Dispose of contents / container to an approved waste disposal plant. 

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		Hazardous
Sudan Black B                                                               4197-25-5       >99%                                       No 

4. FIRST AID: Eyes: Rinse with plenty of water as precaution. Skin: Rinse with plenty of soap & water. 
Ingestion: Do not induce vomiting without medical advice. Rinse with water. Consult physician.
Inhalation: Move to fresh air.  Consult a physician. Physician: Treat symptomatically and supportively. 

5. FIRE FIGHTING: Info: Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH & full PPE. Dusts at sufficient concentrations can form explosive mixtures with air. Irritating & highly toxic gases may be generated by thermal decomp or combustion.  Hazards: Carbon & Nitrogen oxides Extinguishing: Use water spray, dry chemical, carbon dioxide, or alcohol-resistant foam. Flash Pt: N/A Autoignition Temp: N/A   Explosion Limits: N/A  

6. ACCIDENTAL RELEASE: Info: Use proper PPE as indicated in Section 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. Remove all sources of ignition. Provide ventilation.  

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

8. EXPOSURE: Use adequate ventilation to keep airborne concentrations low. 
Chemical		ACGIH		NIOSH		OSHA – Final/Vacated PELs 
Sudan Black                               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: A respiratory protection program that meets OSHA’s 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator’s use. 

9. PHYSICAL & CHEM: Appearance: Very dark-brown to black. Melting Pt: 120-124 deg C. 

10. STABILITY & REACTIVITY: Stability: Stable under normal temp/pressure. Avoid: High temps, incompatibles, dust generation, excess heat. Incompatibilities: Oxidizing agents. Hazardous Decomp Products: see sec 5

11. TOXICOLOGICAL INFO: RTECS#: SD4431500. LD50/LC50: N/A  Carcinogenicity: Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA. 

12. ECOLOGICAL INFO: No information. 

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 as 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 information.

15. REGULATORY INFO: SARA 311/312: None
Section 302 (RQ) & Section 302 (TPQ) None of the chemicals in this material have an RQ or TPQ. 
Section 313 No chemicals are reportable under Section 313.
 STATE CAS# 4197-25-5 is not present on state lists from CA, MN, MA, FL. 
PA Right to Know:	2,3-dihydro-2,2-dimethyl-6-[[1-naphthyl-4-(phenylazo)]azo]-1H-perimidine  CAS#4197-25-5
NJ Right to Know: 2,3-dihydro-2,2-dimethyl-6-[[1-naphthyl-4-(phenylazo)]azo]-1H-perimidine  CAS#4197-25-5
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:   F. 	WGK (Water Danger/Protection) CAS# 4197-25-5: 2 
Canada - DSL/NDSL CAS# 4197-25-5 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.