Educational content for trained professionals. Not a Safety Data Sheet, not medical advice. In an emergency, call your local poison control or emergency services immediately. Terms of use.
potassium iodide
Also known as: potassium iodide · 7681-11-0 · Thyro-Block · Pima
- CAS No.
- 7681-11-0
- Formula
- IK
- Molar mass
- 166.0028 g/mol
- PubChem CID
- 4875
Harmful / Irritant
Health hazard
Environmental hazard
Summary
potassium iodide (IK), CAS 7681-11-0. Common in labs and industry. Read on for hazards, storage, PPE and mixing rules.
Background
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Physical properties
No experimental physical properties indexed yet. Try PubChem for the raw record.
Hazards
May cause skin, eye or respiratory irritation.
Serious long-term health effects (CMR, respiratory sensitizer).
Toxic to aquatic organisms.
Hazard statements
- H302
- H315
- H317
- H319
- H334
- H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]
- H373
- H411
- H320: Causes eye irritation [Warning Serious eye damage/eye irritation]
- H360: May damage fertility or the unborn child [Danger Reproductive toxicity]
- H362: May cause harm to breast-fed children [Reproductive toxicity, effects on or via lactation]
- H370: Causes damage to organs [Danger Specific target organ toxicity, single exposure]
- H361: Suspected of damaging fertility or the unborn child [Warning Reproductive toxicity]
Storage
Keep at room temperature, below 30 °C, out of direct heat.
Store somewhere well-ventilated and away from any ignition source.
Metal drums or tinted glass, tightly sealed.
Strong acids, strong bases and powerful oxidizers.
Personal protective equipment
Nitrile or butyl, at least 0.4 mm thick.
Safety goggles with side shields.
A2 organic-vapor cartridge if the room isn't well ventilated.
Occupational exposure limits (HSE)
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EU harmonised classification (ECHA C&L)
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Transport
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FDA recalls & enforcement
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Compatibilities
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Open comparator with potassium iodidePractical safety notes
- Irritant / harmful. Ventilate the workspace and avoid skin contact.
- Serious health hazard (carcinogen, mutagen, reprotoxic, respiratory sensitizer). Substitute if possible; otherwise closed systems and medical surveillance.
- Environmental hazard. Do not release to sewers or waterways; collect for hazardous waste disposal.
Derived from the GHS classification shown above. These notes are generic guidance and do not replace the manufacturer's SDS or your local risk assessment.
FAQ
Is potassium iodide flammable?+
potassium iodide (CAS 7681-11-0) does not carry the GHS02 flame pictogram in our records. Always confirm with the manufacturer's SDS section 9 (flash point) before assuming a product is non-flammable.
What PPE should I wear when handling potassium iodide?+
Safety glasses with side shields and nitrile gloves are the baseline. Work inside a fume hood or use a suitable respirator. Check SDS section 8 for material-specific breakthrough times.
How should potassium iodide be stored?+
Store potassium iodide (CAS 7681-11-0) in tightly closed original containers, in a cool, dry, well-ventilated area away from incompatible materials.
Is potassium iodide dangerous for the environment?+
Yes. potassium iodide carries the GHS09 environment pictogram. Do not release to drains, soil or waterways; collect residues for hazardous-waste disposal in line with local regulations.
Where can I find the official Safety Data Sheet for potassium iodide?+
Official, up-to-date SDS documents are published by each manufacturer (Sigma-Aldrich, Merck, Thermo Fisher, VWR, Carl Roth, etc.) and by regulators such as ECHA and NIOSH. This page is an educational summary and does not replace the manufacturer's SDS.
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