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Product Name: Iodine
Chemical Formula: I₂
CAS Number: 7553-56-2
Synonyms: Elemental iodine, diatomic iodine
Manufacturer/Supplier: Refer to label or package
Contact Information: Emergency telephone as per package label
GHS Classification: Acute Toxicity Oral (Category 4), Acute Toxicity Inhalation (Category 4), Skin Corrosion/Irritation (Category 2), Eye Damage/Irritation (Category 2A), Aquatic Acute (Category 1)
Hazard Statements: Harmful if swallowed or inhaled. Causes skin and eye irritation. Toxic to aquatic life.
Pictogram: Exclamation mark, Environment
Precautionary Statements: Avoid breathing dust, fumes, or vapors; avoid release to the environment; wear protective gloves, eye protection, and clothing
Chemical: Iodine
Concentration: Pure substance, more than 99%
Impurities: No significant impurities expected under normal conditions
Inhalation: Remove to fresh air immediately. Seek medical attention if symptoms appear. Loosen tight clothing and monitor breathing.
Skin Contact: Rinse the affected area with soap and large amounts of water for at least 15 minutes. Remove contaminated clothing.
Eye Contact: Flush eyes thoroughly with flowing water for at least 15 minutes, lifting upper and lower eyelids. Seek prompt medical advice.
Ingestion: Rinse mouth. Do not induce vomiting unless told by medical professionals. Provide water to drink. Get immediate medical assistance.
General Advice: Show this SDS to the physician in attendance
Suitable Extinguishing Media: Use dry chemical, carbon dioxide (CO₂), or water spray for small fires. Water fog or foam for larger fires.
Special Hazards: Iodine vapors are irritating and toxic. Releases hazardous fumes upon combustion.
Protective Equipment: Firefighters should wear full protective gear and self-contained breathing apparatus
Precautions: Move containers away from fire area if safe. Keep water runoff out of sewers and water sources to prevent environmental damage.
Personal Precautions: Evacuate unnecessary personnel away from the spill. Use protective gloves, glasses, and clothing. Maintain proper ventilation.
Environmental Precautions: Prevent spill from entering sewers, waterways, or soil. Avoid discharge into the environment.
Spill Clean-Up Methods: Sweep up without generating dust, place in a labeled, sealed container for disposal. Ventilate the area and wash after handling
Precautions for Safe Handling: Handle in a fume hood or under effective local exhaust. Wear protective gloves and eye or face protection. Avoid formation of dust.
Conditions for Safe Storage: Keep tightly sealed in original container. Store in a cool, dry, and well-ventilated area. Keep away from incompatible materials like strong reducing agents, metals, and combustibles.
Incompatibilities: Avoid contact with ammonia, acetylene, and sodium; reacts violently. Store away from food sources and animal feed.
Occupational Exposure Limits: ACGIH TLV 0.01 ppm (TWA) for iodine vapor; 0.1 ppm (STEL)
Engineering Controls: Local exhaust ventilation, fume hoods
Personal Protective Equipment: Chemical-resistant gloves (nitrile or neoprene), safety goggles or face shield, lab coat or apron, NIOSH-approved respirator
Hygiene Measures: Wash hands and face after handling iodine, and before eating or drinking. Remove contaminated clothing and clean it thoroughly before reuse.
Appearance: Shiny, violet-black solid crystalline
Odor: Sharp, distinct iodine smell
pH: Not applicable (insoluble in water)
Melting Point: 113.7 °C
Boiling Point: 184.3 °C
Vapor Pressure: 0.3 mmHg at 25 °C
Solubility: Very low in water; soluble in ethanol, chloroform, carbon tetrachloride
Molecular Weight: 253.81 g/mol
Evaporation Rate: Not available
Color: Violet
Partition Coefficient (n-octanol/water): Not determined
Chemical Stability: Stable under recommended storage and handling conditions
Reactivity: Reacts with reducing agents, acetylene, ammonia and some metals, sometimes explosively
Hazardous Reactions: Vigorous or violent reactions with organic and inorganic reducing agents
Hazardous Decomposition: Produces hydrogen iodide and irritating iodine vapors
Conditions to Avoid: Excess heat, exposure to light, moisture, incompatible substances
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Acute Effects: Eye and skin irritation, sore throat, coughing, possible burns and ulcerations
Chronic Effects: Prolonged exposure can affect the thyroid gland; repeated exposure may cause skin discoloration or rash
LD50 (oral, rat): 14 g/kg
Symptoms: Abdominal pain, diarrhea, vomiting, metallic taste, headache, chest tightness
Carcinogenicity: No evidence in humans. Iodine not classified as carcinogenic.
Mutagenicity: No conclusive data
Toxicity to Aquatic Life: Very toxic; may cause long-term effects in the aquatic environment
Persistence and Degradability: Inorganic chemical, slowly degrades to iodide under suitable conditions
Bioaccumulation Potential: Accumulates in aquatic organisms and can move up the food chain
Mobility in Soil: Moderately mobile; will react with organic matter and soil minerals
Other Adverse Effects: Excess iodine disrupts biological ecosystems, can interfere with plant and animal metabolism
Waste Disposal Methods: Treat as hazardous waste according to local, regional, national, and international regulations. Do not dispose of in landfill or drains.
Container Disposal: Rinse containers three times then puncture and dispose according to approved guidelines.
Recommended Treatment: Chemical deactivation or incineration in a properly equipped facility
UN Number: 3495
UN Proper Shipping Name: Iodine
Transport Hazard Class: 8 (Corrosive), 6.1 (Toxic)
Packing Group: III
Marine Pollutant: Yes
Special Provisions: Use containers suitable for corrosive and toxic chemicals, keep separated from food and feedstuffs
Label: Danger—Corrosive, Toxic, Marine Pollutant
OSHA: Regulated hazardous chemical
TSCA (US): Listed
REACH (EU): Registered substance
SARA Title III: Contains hazardous components, reportable quantity applies
Other Regulations: State and local regulations may also apply; refer to safety legislation in your region
