4-AMINOANTIPYRINE

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:  4-Amino-2,3-dimethyl-1-phenyl-3-pyrazolin-5-one 	CAS No.: 83-07-8 E-C No.:201-452-3	
                              Weight:  203.24g/mol 	      Formula: C11H13N3O

2. HAZARDS ID: GHS: Acute toxicity, Oral (Cat 4) 
 Pictogram: 				                  
Signal Word:         WARNING
HAZARD STATEMENT(S): H302: Harmful if swallowed.	
PRECAUTIONARY STATEMENT(S) : P264: Wash skin thoroughly after handling.  P270: Do not drink, eat, smoke, 
when using this product.   P330: Rinse mouth. P301 + P312: If Swallowed: Call Poison Center or doctor/physician 
if you feel unwell. P501: Dispose of contents/container to an approved waste disposal plant.

HMIS Classification: Health hazard  1, Flammability   0,  Physical hazards   0			
NFPA Rating: Health hazard  1, Fire     0, Reactivity hazard   0
2.3: Other Hazards: none

3. COMPOSITION: 
Chemical Name			 CAS No.	 	Percent		
4-Aminoantipyrine	                 		 83-07-8                     90-100%                  

4. FIRST AID: Eyes: Rinse with plenty of water as precaution. Skin: Rinse w/ soap & water. Ingestion: Do not induce vomiting w/o medical advice. Rinse w/ water. Inhalation: Move to fresh air.  Consult physician. Physician: Treat symptomatically & supportively. 

5. FIRE FIGHTING: Info: Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH, & full PPE. Irritating 
and highly toxic gases may be generated by thermal decomposition/combustion.  Runoff may cause pollution. Extinguishing: Use water spray, dry chemical, CO2, or alcohol-resistant foam. Special Haz:  Carbon & nitrogen oxides

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. 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. Use with adequate ventilation. Minimize dust generation and accumulation.  Avoid contact Keep container tightly closed. Avoid ingestion & inhalation. Storage: Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatibles.  Store protected from light. 

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 Name		ACGIH 	       	 NIOSH		OSHA – Final & Vacated PEL’s
4-Aminoantipyrine		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.  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.	Melting Pt: 105-110˚C (221-230˚F).	

10. STABILITY & REACTIVITY: Stability: Stable at room temp in closed containers under normal storage/handling. Incompatibilities:   Strong oxidizing agents, strong acids, acid chlorides, acid anhydrides. 
Haz Decomp.: see section 5

11. TOXICOLOGICAL INFO: RTECS: CAS# 83-07-8: CD2480000	LD50:   Oral, rat: LD50 = 1700 mg/kg; Carcinogenicity: CAS#83-07-8: Not listed by ACGIH, IARC, NTP, or CA Prop 65.          Mutagenicity:   Histidine reversion (Ames)
Other Studies:   May cause respiratory irritation

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 INFO: Not regulated.

15. REGULATORY INFO: SARA 311/312: Acute Health Hazard
CERCLA 302 Hazardous Substance & corresponding RQ & TPQ: None of the chemicals have an RQ or TPQ. 
Section 313 No chemicals are reportable under Section 313. 
STATE CAS# 83-07-8 is not present on state lists from CA, PA, MA, MN, FL, or NJ. 
Pa Right to Know:	4-Amino-2,3-dimethyl-1-phenyl-3-pyrazolin-5-one  CAS#83-07-8 Rev. Date: 2-16-1993
NJ Right to Know:	4-Amino-2,3-dimethyl-1-phenyl-3-pyrazolin-5-one  CAS#83-07-8 Rev. Date: 2-16-1993
California No Significant Risk Level: None of the chemicals in this product are listed. 

EUROPEAN/INTERNATIONAL REGULATIONS - European Labeling in Accordance with EC Directives 
Hazardous Symbols:   XN.   WGK (Water Danger/Protection):  CAS#   83-07-8: 1 
Canada - DSL/NDSL:  CAS# 83-07-8  is listed on Canada’s DSL List. 
Canada – WHMIS: This product does not have a WHMIS classification. 
CAS# 83-07-8   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.  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.