POTASSIUM NITRATE

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:   CAS No.: 7757-79-1 E-C No.:231-818-8 Weight: 101.10g/mol 	 Formula: KNO3

2. HAZARDS ID: GHS Class:  Oxidizing solids (Category 3)
Pictogram: 				                   
Signal Word:         WARNING
HAZARD STATEMENT(S): H272: May intensify with fire; oxidizer     
PRECAUTIONARY STATEMENT(S): P210: Keep away from heat P220: Keep/Store away from clothing/combustible materials.
P221: Take any precaution to avoid mixing with combustibles.  P280: Wear protective gloves/eye & face protection P370+P378: Use dry sand, dry chemical or alcohol-resistant foam for extinction. P501: Dispose of contents/container to an approved waste disposal plant.

Potential Health 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 / INGREDIENTS: 
Chemical Name			 CAS No.	 	Percent		
Potassium Nitrate		                  7757-79-1                90-100%                  

4. FIRST AID: Eyes: Rinse with plenty of water as precaution. 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 and supportively. 
Inhalation:  May cause respiratory tract irritation.  May be harmful if inhaled.  The toxicity of nitrates is due to their in-vivo conversion to nitrites which may lead to methemoglobinemia.

5. FIRE FIGHTING: Info:  Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH & full PPE. This oxidizing material can increase the flammability of adjacent combustible materials. Emits toxic fumes under fire conditions. Extinguishing:  Use dry powder/sand.  Hazards: Nitrogen & Potassium oxides. Flash Pt:  N/A.   Auto-ignition Temp: N/A. Explosion Limits, Lower: Not available.

6. ACCIDENTAL RELEASE: Info: Use appropriate PPE as specified 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.  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. Avoid prolonged or repeated exposure.
Storage: Store container in a cool, dry, ventilated area. Keep container closed when not in use. Hygroscopic

8. EXPOSURE CONTROLS / PERSONAL PROTECTION: Facilities storing or utilizing this material should be equipped with an eyewash facility and safety shower.  Use adequate ventilation to keep airborne concentrations lows.
Chemical Name			ACGIH			NIOSH		OSHA-Final / Vacated PEL’s
Potassium Nitrate 			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 EN 166.0.11mm thick nitrile. 
Skin:  Wear appropriate protective clothing to prevent skin exposure. 0.11 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 a NIOSH or European Standard EN 149 approved respirator, when necessary.

9. PHYSICAL & CHEM:  Appearance:   Colorless White crystals. Relative Gravity:  2.109g/cm3  pH:  5.5-8 at 50g/l at 20˚C (68˚F) Melting Pt:  334°C (633F).  Decomposition temp.: 400 C Bulk Density: 800 kg/m3

10. STABILITY & REACTIVITY: Avoid:  Moisture, heat, flames, ignition sources. Stability:  Stable at room temp in closed containers under normal storage & handling conditions.  Hygroscopic absorbs moisture or water from air.   Hazardous Decomp:  see sec 5   Incompatibilities:  Strong reducing agents, finely powdered metals, strong acid, organic material.

11. TOXICOLOGICAL INFO:  RTECS:  TT3700000	LD50/LC50:    Oral rat:  LD50 = >2,000 mg/kg
Reproductive Toxicity: effects on embryo, behavioral, stillborn
Carcinogenicity: CAS#7757-79-1: Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA. 

12. ECOLOGICAL INFO: Environmental Fate:  Harmful to aquatic life. 
Environmental Toxicity:  LC50-Mosquito fish-22.5mg/l-96h  LC50-guppy-1,378-96h  EC50Water flea-226 mg/l-72h

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.  Additional, 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:  Domestic: UN 1486, Potassium nitrate, 5.1, III, ERG 140

IMDG: UN 1486, POTASSIUM NITRATE, 5.1, III	

IATA: UN 1486, Potassium nitrate, 5.1, III

15. REGULATORY INFO: SARA: Reactivity hazard, acute & Chronic health hazard. 
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#7757-79-1 can be found on the following states right to know lists:  New Jersey, Pennsylvania, Massachusetts. Rev. Date: 3/1/2007
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:  O   WGK (Water Danger/Protection) CAS#7757-79-1:  1
Canada – DSL/NDSL CAS#7757-79-1 is listed on Canada’s DSL List.
Canada – WHMIS This product has a WHMIS classification of   C
CAS#7757-79-1 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.