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Product Name: Calcium Iodate
Chemical Formula: Ca(IO3)2
Synonyms: Iodic acid, calcium salt; Calcium diiodate
CAS Number: 7789-80-2
Recommended Use: Used as a source of iodine in food and feed, laboratory reagent, oxidizing agent, and disinfectant
Supplier: Contact information varies, generally available from chemical distributors
Emergency Contact: Local poison control center or supplier emergency line
GHS Classification: Oxidizing solid (Category 2); Acute toxicity, Oral (Category 4); Eye irritation (Category 2A)
Pictogram: Exclamation Mark, Flame Over Circle
Signal Word: Warning
Hazard Statements: May cause eye irritation; Harmful if swallowed; May intensify fire, oxidizer
Routes of Exposure: Inhalation, skin, eyes, ingestion
Symptoms: Eye or skin redness, cough, nausea, stomach pain if ingested, headache at high exposure levels
Precautionary Statements: Keep away from combustible materials; Do not eat, drink, or smoke while handling; Wash hands thoroughly after use
Chemical Name: Calcium Iodate
Concentration: 98% or higher typical purity
CAS Number: 7789-80-2
Molecular Weight: 389.89 g/mol
Impurities: May include traces of calcium sulfate, calcium carbonate, magnesium salts depending on manufacturing process
Eye Contact: Flush eyes with plenty of water for at least 15 minutes. Remove contact lenses if present. Seek medical help if irritation or discomfort persists.
Skin Contact: Remove contaminated clothing. Wash skin with soap and water. Get medical attention if rash or irritation develops.
Inhalation: Move person to fresh air. Keep comfortable for breathing. Get medical attention if symptoms occur or persist.
Ingestion: Rinse mouth with water. Do not induce vomiting without medical advice. Seek immediate medical attention.
Notes to Physician: Treat symptomatically. No known specific antidote.
Suitable Extinguishing Media: Water spray, dry chemical, foam. Avoid dry combustibles.
Unsuitable Media: Avoid use of dry chemical alone on large fires, avoid carbon dioxide on its own.
Special Hazards: Releases toxic iodine fumes at high temperatures. Calcium iodate increases fire risk when mixed with combustible materials.
Protective Equipment: Wear full protective gear and self-contained breathing apparatus.
Advice for Firefighters: Approach fire from upwind. Dike runoff to prevent entry into drains or water bodies.
Personal Precautions: Ventilate area. Wear gloves, goggles, and appropriate respiratory protection.
Environmental Precautions: Prevent entry to watercourses, drains, or soil.
Containment and Cleanup: Scoop up spillage without creating dust. Place in suitable container for disposal. Wash spill site after material is picked up.
Methods for Cleaning Up: Use tools to gather solid. Flush contaminated surface with water, avoiding runoff.
Precautions for Safe Handling: Avoid dust formation; avoid ingestion or contact with skin, eyes, and clothing. Avoid mixing with organic or combustible materials. Handle in well-ventilated areas.
Conditions for Safe Storage: Store in tightly closed containers. Keep in a cool, dry place away from heat and incompatible substances like reducing agents, organics, or combustibles.
Incompatible Materials: Hydrocarbons, strong reducing agents, acids, sulfur, powdered metals.
Storage Class: Oxidizers
Occupational Exposure Limits: No specific limits established; follow general dust exposure guidelines OSHA PEL for nuisance dust (15 mg/m³ total dust, 5 mg/m³ respirable fraction).
Engineering Controls: Use local exhaust ventilation to keep airborne levels below exposure limits.
Personal Protection: Use chemical goggles or face shield; impervious gloves; lab coat or apron; NIOSH/MSHA approved respirator for dust.
Hygiene Measures: Wash hands before eating or drinking. Change contaminated clothing and clean before re-use. Do not smoke, eat or drink in area of use.
Environmental Controls: Minimize releases to environment. Use spill containment where appropriate.
Appearance: White crystalline powder
Odor: Odorless
Odor Threshold: Not available
pH: Slightly acidic in water
Melting Point: Decomposes before melting (≥ 540 °C)
Boiling Point: Not applicable
Flash Point: Not flammable
Evaporation Rate: Not applicable
Flammability: Not combustible
Explosive Limits: Not applicable
Vapor Pressure: Not applicable
Vapor Density: Not applicable
Relative Density: 5.01 g/cm³
Solubility: Slightly soluble in water
Partition Coefficient (n-octanol/water): Not available
Auto-ignition Temperature: Not applicable
Decomposition Temperature: ≥ 540 °C
Viscosity: Not applicable
Chemical Stability: Stable under standard conditions for storage and handling.
Reactivity: Acts as a strong oxidizing agent.
Conditions to Avoid: Heat, flames, sparks, direct sunlight, organic and combustible materials.
Incompatible Materials: Strong acids, reducing agents, organics, powdered metals.
Hazardous Decomposition Products: Toxic iodine fumes, calcium oxides
Polymerization: Will not occur
Likely Routes of Exposure: Inhalation, skin and eye contact, ingestion
Acute Toxicity: Oral LD50 (rat): >2000 mg/kg
Skin Corrosion/Irritation: May cause mild skin irritation
Serious Eye Damage/Irritation: Causes irritation
Respiratory Sensitization: Data not available
Skin Sensitization: Not classified as a sensitizer
Germ Cell Mutagenicity: Not classified
Carcinogenicity: Not classified by IARC, NTP, or OSHA
Reproductive Toxicity: No evidence in animal studies at typical exposures
Specific Target Organ Toxicity (Single/Repeated Exposure): No data on repeated exposure toxicity at low levels
Aspiration Hazard: Not applicable
Ecotoxicity: May be harmful to aquatic organisms due to iodate ions; data limited
Persistence and Degradability: Inorganic substance not biodegradable but dissociates into ions
Bioaccumulative Potential: Not expected to bioaccumulate; calcium and iodate ions dissociate in environment
Mobility in Soil: High mobility in water; iodates are soluble and can migrate through soil
Other Adverse Effects: Iodine can disrupt aquatic species at high concentrations
Waste Disposal Methods: According to local, regional, and national regulations; do not dispose into sewers or natural waterways
Container Disposal: Rinse containers, dispose as hazardous waste; do not re-use contaminated packaging
Special Precautions: Consult local environmental authority for guidance on best practices
Contaminated Material: Handle as hazardous waste, avoid mixing with regular trash
UN Number: 1479
UN Proper Shipping Name: Oxidizing solid, n.o.s. (Calcium Iodate)
Transport Hazard Class: 5.1 (Oxidizer)
Packing Group: III
Marine Pollutant: Not classified as a marine pollutant
Transport Labels: Oxidizer label required
Special Transport Precautions: Keep away from food and feedstuffs, avoid temperature extremes, separate from flammables
OSHA: Not specifically regulated
SARA Title III, Sections 311/312: Immediate (Acute) health hazard; Fire hazard
TSCA: Listed
DSL/NDSL (Canada): Listed
REACH Status: Not registered as a substance of high concern in EU
Other Local Regulations: Follow applicable requirements in specific regions; consult with environmental, health, and safety officers
