POTASSIUM IODIDE 
Safety Data Sheet         
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Effective Date:  January 1, 2025
1. PRODUCT ID: CAS No.: 7681-11-0   Weight:   166.00 g/mol   Formula:  Kl  EC-No.: 231-659-4

2. HAZARDS ID: GHS: Specific Target Organ Toxicity-repeated exposure Oral  (Category 1) Thyroid H372
Pictogram                                                       		   
Signal Word                             Danger
Hazards: H372: Causes damage to organs (Thyroid) through prolonged or repeated exposure if swallowed.
Precautionary statement(s): P260: Do not breathe dust/fume/gas/mist/vapors/spray.	
P270: Do not drink, eat, smoke, when using this product.  P264: Wash skin thoroughly after handling.	P314: Get medical advice/attention if you feel unwell. P501: Dispose of contents/container to an approved waste disposal plant.

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
Potassium Iodide	          	  7681-11-0                      ~99%	                              No

4. FIRST AID: Eyes: Rinse eyes as a 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. 

5. FIRE FIGHTING: Info: Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH, & full PPE. Water mist may be used to cool closed containers. Extinguishing: Use dry chemical, CO2, water spray or alcohol resistant foam.  Hazards:  Potassium oxides, hydrogen iodide 

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 PPE 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.  Avoid ingestion and inhalation.
Storage: Store in a cool, dry well-ventilated area away from incompatibles.  Store in a tightly closed container.

8. EXPOSURE, PPE: 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			ACGIH		NIOSH		OSHA Final/Vacated PEL’s
 Potassium Iodide	                             0.01mg/m3 TWA	None listed	None listed

PPE: Eyes: Wear 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 protective gloves to prevent skin exposure. 0.11mm thick nitrile. Clothing:  Wear protective clothing (ex: Lab coat, apron) to prevent skin exposure. Respirators:  OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator whenever workplace conditions warrant respirator use.

9. PHYSICAL & CHEM: White to slightly yellow crystalline powder  Melting Pt:  681°C (1258°F)    pH:  6.0 – 9 at 166 g/l at 25°C (77°F)  Vapor Pressure:  1hPa (1mmHg) at 375°C (1,373°F) Bulk Density:  1,700 kg/m3 Boiling Pt:  1,330°CV (2,426°F) Density: 3.130 g/cm3  Solubility: ca.1,430 g/l at 25°C 

10. STABILITY & REACTIVITY: Stability:  Stable under recommended storage conditions. May decompose on exposure to air and moisture.	Avoid:   Tin/tin oxides   Incompatibilities:  Strong reducing agent,  metals, acids, nickel, aluminum, alkali metals, brass, magnesium, zinc, cadmium, copper.	Haz Decomp:  see section 5

11. TOXICOLOGICAL: RTECS: TT2975000 LD50: Dermal Rat 2,000mg/kg 
Carcinogenicity: Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA.   Liver irregularities

12. ECOLOGICAL INFO: LC50-rainbow trout -3,780-96h, EC50 water flea-7.5mg/l-24h

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: Not dangerous goods.

15. REGULATORY: SARA 311/312:  Chronic health hazard
SARA Section 302 Extremely Hazardous Substances None of the chemicals in this product have a TPQ.
Section 313 No chemicals are reportable under Section 313. 
STATE CAS#7681-11-0  is not present on state lists from CA, MN, MA, FL. 
PA Right to Know: Potassium Iodide  CAS#7681-11-0        NJ Right to Know: Potassium Iodide  CAS#7681-11-0
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 Directives 
Hazardous Symbols: X   WGK (Water Danger/Protection) CAS#7681-11-0:  No information available. 
Canada - DSL/NDSLCAS# 7681-11-0  is  listed on Canada’s DSL List.   Canada – WHMIS:  Not available.
CAS# 7681-11-0 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.