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Product Name: Potassium Iodate
Chemical Formula: KIO3
CAS Number: 7758-05-6
Synonyms: Iodic acid, potassium salt; Potassium iodate(V)
Recommended Use: Food fortification, analytical reagent, chemical intermediate
Supplier/Manufacturer: Information available through distributor or manufacturer
Emergency Contact: Refer to local regulations or specific supplier details
GHS Classification: Oxidizing solid, Category 2; Acute toxicity (oral, inhalation), Category 4; Specific target organ toxicity, single exposure
Pictogram: Exclamation mark, flame over circle
Signal Word: Warning
Hazard Statements: May intensify fire; oxidizer. Harmful if swallowed or inhaled. May cause respiratory irritation.
Precautionary Statements: Avoid breathing dust. Keep away from heat, sparks, open flames. Wash hands thoroughly after handling. Wear protective gloves and eye/face protection.
Potential Health Effects: Irritation to skin, eyes, respiratory tract; can disrupt thyroid function with prolonged exposure
Substance: Potassium Iodate
Concentration: 98-100% (pure substance)
Chemical Formula: KIO3
CAS Number: 7758-05-6
Impurities: Trace potassium salts, water (minimal, depending on storage)
Eye Contact: Rinse immediately with plenty of water for at least 15 minutes. Remove contact lenses if present and easy to do. Seek medical advice.
Skin Contact: Wash with soap and water. Remove contaminated clothing. Call a physician if irritation develops.
Inhalation: Move to fresh air. Keep at rest in a comfortable breathing position. Medical attention required for persistent symptoms.
Ingestion: Rinse mouth. Drink water if conscious. Do not induce vomiting. Get medical attention.
General Advice: Take all contaminated clothing off immediately. Wash hands thoroughly after handling.
Suitable Extinguishing Media: Use water spray, foam, dry chemical, or carbon dioxide.
Unsuitable Extinguishing Media: Do not use dry combustible materials (can accelerate burning).
Special Hazards Arising: Releases toxic iodine vapors at high temperatures; intensifies fire with combustible material.
Protective Equipment: Firefighters wear full protective clothing and NIOSH-approved self-contained breathing apparatus.
Advice for Firefighters: Cool surroundings with water spray. Keep incompatible substances away from fire area.
Personal Precautions: Use personal protective equipment including dust mask, gloves, and goggles. Ventilate area.
Environmental Precautions: Do not release to environment. Avoid runoff into soil and waterways.
Methods for Cleanup: Sweep up without creating dust. Transfer to a tightly closed container for disposal. Wash spill site after material pickup.
Reference to Other Sections: See Exposure Controls and Disposal Considerations.
Safe Handling: Avoid breathing dust. Avoid contact with skin, eyes, and clothing. Use with adequate ventilation. Wash thoroughly after handling.
Storage Conditions: Store in a tightly closed, labeled container. Keep in a cool, dry, well-ventilated place, away from combustible and reducing agents.
Incompatibilities: Avoid contact with strong acids, reducing agents, combustible and organic materials.
Hygiene Practices: Change contaminated clothing. Keep away from food and drink areas. Wash hands before breaks and after handling.
Control Parameters: No established exposure limits by OSHA, NIOSH, or ACGIH.
Engineering Controls: Local exhaust ventilation or general dilution ventilation recommended.
Personal Protective Equipment:
Appearance: White crystalline powder
Odor: Odorless
Odor Threshold: Not available
pH: 5.0 - 8.0 (1% solution)
Melting Point/Freezing Point: Decomposes at 560°C
Boiling Point: Not applicable (decomposes)
Flash Point: Not applicable
Evaporation Rate: Not applicable
Flammability: Non-flammable, but oxidizing solid
Vapor Pressure: Negligible
Vapor Density: Not applicable
Relative Density: 3.89 g/cm3
Solubility in Water: 7.5 g/100 mL (25°C)
Partition Coefficient (n-octanol/water): Not available
Auto-ignition Temperature: Not self-ignitable
Decomposition Temperature: >560°C
Viscosity: Not applicable
Chemical Stability: Stable under recommended conditions
Possibility of Hazardous Reactions: Vigorous reactions with reducers or combustible materials
Conditions to Avoid: Excessive heat, moisture, contact with incompatible substances
Incompatible Materials: Strong reducing agents, organic materials, acids, sulfur, phosphorus, powdered metals
Hazardous Decomposition Products: Iodine, potassium oxides
Acute Toxicity: LD50 (oral, rat): ~2,245 mg/kg; can cause stomach upset, headache, diarrhea at high exposure
Chronic Effects: Repeated ingestion may disrupt thyroid function. Risk increases for patients with pre-existing thyroid, kidney, or heart disorders.
Skin and Eye Irritation: May cause mild to moderate irritation. Prolonged contact increases risk.
Inhalation: Can irritate respiratory tract.
Carcinogenicity: Not listed as carcinogen by IARC, NTP, or OSHA.
Reproductive Effects: Limited data available
Other Effects: May aggravate pre-existing medical conditions. Symptoms include weakness, low blood pressure, swelling of the salivary glands.
Ecotoxicity: Harmful to aquatic organisms at high concentrations. Toxic to algae, daphnia, fish (due to iodine release).
Persistence and Degradability: Inorganic salt; not readily biodegradable, but can persist in soil and water.
Bioaccumulation: Potential for accumulation in aquatic organisms over time.
Mobility: Soluble in water; migrates through soil and groundwater.
Other Adverse Effects: Large releases can disrupt local ecosystems, risk of algae bloom changes.
Waste Treatment Methods: Dispose of in accordance with local, regional, and national regulations.
Disposal of Product: Treat as hazardous waste. Do not dispose of with regular garbage or sewage.
Contaminated Packaging: Rinse packaging before disposal. Dispose of rinsate as hazardous waste.
Environmental Precautions: Prevent entry into drains, sewers, or waterways.
UN Number: UN 1479
Proper Shipping Name: Oxidizing Solid, n.o.s. (Potassium Iodate)
Transport Hazard Class(es): 5.1 (Oxidizing substances)
Packing Group: II
Labels: Oxidizer
Special Precautions: Avoid contact with combustible or organic materials during transport. Secure containers to prevent tipping and spillage.
Environmental Hazards: See ecological section for large spills or releases.
OSHA Status: Hazardous according to OSHA criteria
TSCA: Listed in TSCA Inventory
SARA Title III: Not subject to specified reporting under SARA 302/304/311/312
California Proposition 65: Not listed
WHMIS: Classified as Oxidizer, Toxic Material
Other Regulations: Complies with REACH, EINECS, and other global chemical registration requirements. Reference local regulations for specific requirements.
