TIRON

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: CAS No.: 149-45-1 	E-C No.:205-741-5   Weight:  332.22g/mol 	Formula: C6H4Na2O8S2.H2O

2. HAZARDS: GHS:  Skin irritation (Cat 2)  Eye irritation (Cat 2A)  Specific target organ toxicity – single exposure (Cat 3) Respiratory system
 Pictogram: 					
Signal Word:         WARNING
HAZARD STATEMENT: H319: Causes serious eye irritation. H315: Causes skin irritation. H335: May cause respiratory irritation.	
PRECAUTIONARY STATEMENT: P264: Wash skin thoroughly after handling. P405: Store locked up. P280: Wear protective gloves/eye & face protection. P302 + P352: If on skin gently wash with plenty of soap & water. P305 + P351 + P338: If in Eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present & easy to do so. Continue rinsing P332 + P313: If skin irritation occurs: consult physician.  P337 + P313: If eye irritation occurs: consult physician. P362: Take off contaminated clothing and wash before reuse. P501: Dispose of contents/container to an approved waste disposal plant.

HMIS Class: Health hazard  2, Flammability   0,  Physical hazards   0			
NFPA Rating: Health hazard  2, 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 Name						CAS No		Percent		
Disodium 4,5-dihydroxybenzene-1,3-disulphonate		149-45-1		~ 100%	

4. FIRST AID: Eyes: Rinse thoroughly for 15 min with plenty of water 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. FIREFIGHTING: Info: Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH & full PPE. Irritating & toxic fumes and gases may be generated by thermal decomp/combustion. Runoff from fire control or dilution may cause pollution. Extinguishing: Use water, dry chemical, chemical foam, or alcohol- resistant foam. Hazards: Carbon, sodium & sulfur oxides. Flash Pt: N/A. Auto-ignition 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 suitable container for disposal. Clean up spills immediately, observing precautions in the PPE 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. Keep container tightly closed. Avoid ingestion and inhalation. Storage: Keep container tightly closed when not in use. 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
Tiron  			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 29 CFR 1910.134 or European Standard EN 149. Always use NIOSH or European Standard EN149 approved respirator when necessary.

9. PHYSICAL & CHEM: Appearance: Off-white crystalline powder    Melting Pt: >300˚C (>572˚F) pH: 5.0 at 10g/l at 20°C Water Solubility: ca.1,350 g/l at 20°C Partition coefficient:n-octanol/water log Pow: -5.65 Bioaccumulation is not expected. Bulk density ca 465 kg/m3

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

11. TOXIC INFO: RTECS#: CZ9263000 LD50/LC50: N/A Carcinogenicity: Not in ACGIH, IARC, NTP, NIOSH, or OSHA.

12. ECOLOGICAL INFO: No information available.

13. DISPOSAL CONSIDERATION: 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: No information available.

15. REGULATORY INFO: SARA311/312: Acute Health Hazard
Section 302 (RQ) and Section 302 (TPQ): None of the chemicals in this product have an RQ or a 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:	Disodium 4,5-dihydroxybenzene-1,3-disulphonate CAS#149-45-1
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
Hazard Symbols: Not available.  WGK (Water Danger/Protection): CAS# 149-45-1: No information available.
Canada DSL/NDSL: CAS# 149-45-1 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.