IODONITROTETRAZOLIUM VIOLET FORMAZAN
 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: Syn: INT; 2-(4-Iodophenyl)-3-(4-nitrophenyl)-5-phenyltetrazolium chloride; 2-(p-Iodophenyl)-3-(nitrophenyl)-5-phenyltetrazolium chloride; 2HTetrazolium, 2-(4-iodophenyl)-3-(4-nitrophenyl)-5-phenyl-, chloride; CAS No.: 7781-49-9.  EC-No.: 231-950-6 Weight: 471.25. Formula: C19H14IN5O2 

2. HAZARDS: GHS Class:   Respiratory sensitization (Category 1)   
						
Signal word: 	Danger
Hazard Statement: H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled. 
Precautionary Statement: P261: Avoid breathing dust/fume/gas/mist/vapors/spray. P285: In case of inadequate ventilation wear respiratory protection. P304 +P341: IF INHALED: If Breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing. P342 + P311: If experiencing respiratory symptoms: Call a POISON center /Doctor. P501: Dispose of contents/container to an approved waste disposal plant. 

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 ON INGREDIENTS: 
Chemical 					CAS No.		Percent	        Hazardous
2-(4-Iodophenyl)-3-(4-nitrophenyl)-5-		146-68-9	  	99%                  No 
phenyltetrazolium chloride hydrate. 

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.  Consult a physician. Physician: Treat symptomatically and supportively. 

5. FIRE FIGHTING: Info: Wear a self-contained breathing apparatus if necessary. Extinguishing: Use dry chemical, CO2, water spray or alcohol resistant foam.  Haz:  Carbon & Nitrogen oxides, Hydrogen chloride gas, Hydrogen iodide. 

6. ACCIDENTAL RELEASE: Info: Use proper PPE as indicated in Section 8. Spills/Leaks: Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation. Do not get water inside containers. 

7. HANDLING & STORAGE: Handling: Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. Store protected from light. Keep from contact with moist air and steam. Storage: Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Temp 2-8°C.  Store protected from moisture & light.

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-(4-Iodophenyl)-5-(4-Nitrophenyl)-     	None listed            None listed     None listed
3-phenylformazan

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 European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. 0.11mm nitrile. 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: Brown-red powder Melting Pt: 187°C 

10. STABILITY & REACTIVITY: Stability: Stable under normal temperatures and pressures. Light sensitive. 
Avoid: Incompatibles, light, dust and generation, strong oxidants, exposure to moist air or water. 
Incompatibilities: Moisture, direct light, strong oxidizing agents.  Haz Decomp: see section 5

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

12. ECOLOGICAL INFO: No data.

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 dangerous goods. 

15. REGULATORY INFO: SARA 311/312: Acute Health Hazard
Section 302 (RQ) & Section 302 (TPQ) None of the chemicals in this material/product have a RQ or TPQ. 
Section 313 No chemicals are reportable under Section 313. 
STATE is not present on state lists from CA, MN, MA, FL. 
PA & NJ Right to Know: Iodonitrotetrazolium violet formazan  CAS#7781-49-9
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                       
WGK (Water Danger/Protection) CAS# 146-68-9: 2. Canada - DSL/NDSL CAS# 146-68-9 is listed on Canada’s DSL List. 
Canada – WHMIS This product has a WHMIS classification of not controlled.

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.