Potassium Iodide Powder
Lifeworth supplies bulk potassium iodide with specification options for different application and destination-market requirements. Buyers can confirm the required standard, assay basis, impurity limits, physical form, packaging and documentation before sampling or commercial ordering.
- Food-grade and pharmaceutical-grade specification options
- Powder, granular or crystal form subject to availability
- USP, BP or FCC specification support subject to batch confirmation
- COA, SDS/MSDS and TDS/specification sheet available
- Sample evaluation and export-ready bulk packaging
Tell us your application, target specification, and destination market so we can support grade selection, documentation review, and packaging recommendations.
Quick Specs
Identity
INCI Name
Alias
CAS Number
Molecular Formula
Molecular Weight
Quality
Assay
Grade
Standards
Assay Method
Handling
Appearance
Form
Solubility
Applications
Commercial Terms
MOQ
MOQ depends on packaging and specification.
Lead Time
3–7 working days for standard items; bulk orders by schedule.
Incoterms
EXW / FOB / CIF / DAP / DDP
Sample
Free sample (shipping charged)
Quality & Documents
COA (per batch) • SDS/MSDS • TDS/Spec sheet (on request). Additional statements depend on product and market.
Product Overview
Potassium Iodide is an inorganic iodide salt supplied for projects requiring a defined source of iodide. It is commonly available as a white crystalline powder, granules or crystals and is highly soluble in water.
Commercial buyers normally select potassium iodide according to the intended application rather than purity alone. Pharmaceutical, food fortification, dietary supplement and reagent projects may require different assay ranges, impurity limits, test methods, packaging controls and supporting documents.
Important specification items may include identification, potassium iodide content, loss on drying, alkalinity or pH-related controls, iodate, chloride, bromide, thiosulfate, barium, heavy metals or lead, depending on the selected standard. The final test list and limits should therefore be confirmed against the applicable USP, BP, FCC or customer-agreed specification.
Potassium iodide can gradually develop a yellow appearance when exposed to moisture, light or prolonged air contact because iodide may be oxidized and iodine-related species may form. Appropriate sealing, light protection and dry storage are therefore important during transportation, warehousing and use.
Comparison
Use the comparison below to identify when potassium iodide may be a better fit than potassium iodate for your formulation or sourcing project.
| Criteria | Potassium Iodide | Potassium Iodate |
|---|---|---|
| Core role | An iodide salt commonly selected for pharmaceutical, food fortification, dietary supplement, reagent, and selected technical applications where KI is specified as the required iodine source. | An iodate salt commonly selected for food fortification and processing applications where potassium iodate is specified by the formulation, regulatory framework, or established production standard. |
| Best for | Projects that specifically require potassium iodide and need a highly water-soluble iodide source in powder, granular, or crystal form, subject to the selected grade and specification. | Projects that specifically require potassium iodate and where iodate-form stability, processing conditions, or an established fortification standard support its use. |
| Formulation focus | Review typically focuses on water solubility, iodide-form compatibility, elemental iodine calculation, blending uniformity, and protection from moisture, light, and prolonged air exposure. | Review typically focuses on iodate-form compatibility, processing stability, ingredient interactions, reduction behavior within the formulation, and suitability for the intended fortification system. |
| Stability and handling | Requires effective sealing and protection from moisture, direct light, and prolonged air exposure because inappropriate storage may contribute to oxidation and gradual yellowing. | Often considered more oxidation-stable in certain dry fortification systems, although actual performance still depends on formulation composition, processing, packaging, and storage conditions. |
| Buyer review focus | Buyers normally review the required grade, KI assay, iodate and related impurity limits, physical form, packaging protection, batch COA, and applicable USP, BP, FCC, or customer-defined requirements. | Buyers normally review potassium iodate content, applicable food or technical standard, particle characteristics, processing suitability, regulatory acceptance, and supporting batch documentation. |
| Selection principle | Choose potassium iodide when KI is required by the formulation, pharmacopoeia, customer specification, or destination-market standard. | Choose potassium iodate when KIO₃ is required by the formulation, fortification program, processing standard, or destination-market regulation. |
Potassium iodide and potassium iodate should not be treated as automatically interchangeable. Final selection should be based on the required iodine form, application standard, processing environment, stability expectations, and destination-market requirements.
Applications
Pharmaceutical Preparations
Potassium iodide may be sourced for pharmaceutical manufacturing and preparation projects where the applicable monograph, assay range, impurity profile, manufacturing quality system and regulatory documentation must be confirmed before approval. Buyers should specify the required pharmacopoeia, dosage-form project, target market and document package when requesting a quotation.
Food Fortification
Food-grade potassium iodide may be evaluated as an iodine source in approved fortification systems. Selection should consider the applicable food regulation, required iodide level, processing environment, ingredient interactions, storage stability and packaging protection. Suitability and permitted use levels must be confirmed for the destination market and finished-food category.
Dietary Supplements
Potassium iodide can be considered for dietary supplement formulations requiring an iodide source. Supplement manufacturers should confirm the required grade, elemental iodine calculation, serving-level dosage, blending uniformity, finished-product stability and destination-market compliance before commercial use.
Reagent and Analytical Applications
Reagent-grade or specification-controlled potassium iodide may be used in laboratory, analytical and chemical systems where identity, purity, solution clarity, impurity profile and packaging format are relevant to the intended procedure. The required analytical grade and test method should be stated before ordering.
Selected Industrial Applications
Potassium iodide may also be used in agreed chemical processing, technical formulations and industrial systems. Because industrial requirements vary widely, buyers should provide the intended use, required purity, critical impurity limits, annual quantity and packaging requirement for supplier evaluation.
How to Choose the Right Grade / Form
1. Confirm the Intended Application
State whether the material will be used in a pharmaceutical product, food fortification system, dietary supplement, laboratory reagent or industrial process. The intended use determines the appropriate grade, specification and documentation direction.
2. Confirm the Required Standard
Specify whether your project requires USP, BP, FCC, reagent grade or a customer-defined specification. These standards may use different assay ranges, impurity items and test methods and should not be treated as automatically equivalent.
3. Confirm the Required Physical Form
Potassium iodide may be available as powder, granules or crystals. The preferred form can depend on dissolution, dosing, blending, production handling and packaging requirements. Availability should be confirmed for the selected grade.
4. Review Critical Test Items
In addition to assay, buyers may need to review identification, loss on drying, iodate, chloride, bromide, thiosulfate, barium, heavy metals, lead, solution appearance or other monograph-specific items.
5. Confirm Packaging and Storage Requirements
Because potassium iodide is sensitive to moisture, light and prolonged exposure to air, buyers should review inner-liner protection, container sealing, pack size, warehousing conditions and expected consumption period.
6. Confirm the Documentation Package
Before ordering, provide the destination market and required documents, such as batch COA, SDS/MSDS, TDS, manufacturing information, allergen statement, GMO statement, origin information or other regulatory documents. Availability depends on the selected grade and supply source.
Technical & Formulation Notes
Technical Notes
Potassium iodide is a highly water-soluble inorganic salt. It should be evaluated according to the selected grade, complete impurity profile and end-use requirements rather than by assay value alone. Physical form, moisture exposure, light protection and packaging integrity can also affect commercial handling and storage performance.
Manufacturing & Process
The product is commonly produced through controlled synthesis and purification processes designed to support consistent iodide content, appearance, and handling profile.
For commercial review, process communication is usually linked to purity direction, batch consistency, packaging suitability, and storage stability rather than over-detailed manufacturing claims unless project-specific technical data are required.
Compatibility / Formulation Notes
Solubility and Processing
Potassium iodide is freely soluble in water and can normally be incorporated through the aqueous phase of a formulation. Dissolution conditions, addition sequence and processing temperature should be evaluated in the actual system, particularly where the formulation contains oxidizing agents, reducing agents, minerals or other reactive ingredients.
Iodine Calculation
Formulators should calculate the required addition level according to the potassium iodide assay and the target elemental iodine contribution. Potassium iodide and elemental iodine values are not equivalent, so dosage calculations should be verified before pilot production and commercial scale-up.
Blending Uniformity
Because potassium iodide may be used at relatively low addition levels in food and supplement formulations, adequate premixing and blending validation are important. A suitable carrier or staged dilution process may help improve distribution uniformity in dry blends.
Compatibility and Stability
Potassium iodide may gradually oxidize when exposed to moisture, light, air or incompatible ingredients. Formulation compatibility, processing exposure, packaging protection and finished-product stability should therefore be confirmed through appropriate laboratory and shelf-life testing.
Grade and Specification Selection
The selected material should match the intended application and required standard. Pharmaceutical, food fortification, dietary supplement and reagent projects may require different assay ranges, impurity limits, test methods and documentation. USP, BP, FCC and customer-defined specifications should be reviewed separately.
Technical Responsibility
Lifeworth can provide product specifications, batch documents and sourcing support. Final dosage, formulation compatibility, processing conditions, regulatory suitability and finished-product claims should be assessed and approved by the buyer’s technical and regulatory teams.
Extended QC & Test Items
Depending on the selected standard, quality-control items may include appearance, identification, KI assay, loss on drying, iodate, chloride, bromide, thiosulfate, barium, heavy metals, lead and solution-related tests. The applicable batch specification should be approved before sample evaluation or commercial purchase.
Product specifications
| Test | Specification | Method |
|---|---|---|
| Appearance | White crystalline powder or crystals | Visual |
| Product Identity | Potassium Iodide / KI | Reference |
| Assay / KI Content | 99.0% min / per agreed spec | Per spec |
| Chloride / Iodate / Related Impurities | Per agreed spec | Per spec |
| Loss on Drying | Per agreed spec | Per spec |
| Documents | COA per batch; SDS/MSDS and TDS available | Reference |
Storage, Shelf Life & Packaging
Storage
Store in a cool, dry, and light-protected place in tightly sealed containers.
Protect from moisture, heat, and direct sunlight during storage and transportation.
Shelf Life
Shelf life should follow the agreed specification and original packing condition.
Batch label, packaging integrity, and storage compliance should be checked before use.
Packaging & Logistics
Sample Packing
Small evaluation packs can be arranged for technical review and sourcing evaluation.
Bulk Packing
Common supply formats may include 1 kg, 5 kg, 10 kg, and 25 kg export packing, subject to project and shipment arrangement.
Customization
Custom pack size, labeling format, and selected supply configuration may be arranged according to product scope and market requirements. For finished dosage-form or private-label discussion, project scope should be confirmed separately.
Logistics & Documents
COA, SDS/MSDS, TDS/specification sheet, and related shipment-support documents can be arranged according to the agreed supply plan.
Supply, Documentation & Customization
Documents & Compliance
COA, SDS/MSDS, and TDS/spec sheet available based on product and market requirements.
Customization & Private Label
Custom packing, private label, and labeling support available depending on product type and order scope.
Commercial Support
Sample, lead time, and incoterm options can be discussed according to destination market and supply plan.
Why Source From Lifeworth
Specification-Based Sourcing
We review the required application, grade, standard and critical test items before recommending an available potassium iodide specification. USP, BP, FCC and customer-defined requirements are handled as separate specification directions rather than being presented as automatically interchangeable.
Batch Document Review
COA, SDS/MSDS and TDS/specification documents can be reviewed before commercial ordering. This helps buyers compare assay basis, impurity limits, physical form, packaging and applicable quality requirements.
Application-Aware Communication
Our discussion focuses on the information required for supplier qualification, including intended application, destination market, required standard, packing format, quantity and document package.
Sample and Bulk Supply Coordination
Evaluation samples, batch availability, bulk packing, labeling and international shipping can be coordinated according to the agreed specification and purchasing schedule.
Clear Commercial Boundaries
Grade compliance, special documents, packaging customization and destination-market requirements are confirmed before ordering. We avoid treating one generic specification as suitable for every pharmaceutical, food, supplement, reagent or industrial project.
FAQ
1. What is the difference between food-grade and pharmaceutical-grade potassium iodide?
Food-grade and pharmaceutical-grade potassium iodide may differ in applicable standards, assay ranges, impurity limits, test methods, manufacturing controls and documentation. The correct grade should be selected according to the intended application and destination-market requirements rather than purity alone.
2. Can you supply potassium iodide according to USP, BP or FCC specifications?
USP, BP and FCC specification options may be available, subject to grade and batch confirmation. Please state the exact standard required so that we can provide the corresponding specification or batch COA for review.
3. Is 99% potassium iodide automatically USP grade?
No. A 99% assay claim alone does not establish USP compliance. USP-grade material must comply with the applicable monograph, including the required assay range, identification, impurity controls and test methods.
4. Why can potassium iodide become yellow during storage?
Potassium iodide may gradually become yellow when exposed to moisture, light or prolonged contact with air because iodide can undergo oxidation and iodine-related species may form. The material should be stored in tightly sealed, dry and light-protected packaging.
5. Is potassium iodide available as powder, granules or crystals?
Potassium iodide may be supplied as crystalline powder, granules or crystals. Available form depends on the grade, factory production and batch inventory and should be confirmed before ordering.
6. What specification items should buyers review?
In addition to assay, buyers may need to review identification, loss on drying, iodate, chloride, bromide, thiosulfate, barium, heavy metals, lead and solution-related tests. The exact items depend on the applicable standard.
7. Is potassium iodide soluble in water?
Yes. Potassium iodide is freely soluble in water. However, buyers should still assess solution concentration, other ingredients, process conditions and finished-product stability in the actual formulation.
8. What packaging is recommended for potassium iodide?
Tightly sealed, moisture-protective and light-protective packaging is recommended. Inner-liner integrity and effective resealing are especially important after the package has been opened.
9. What documents can you provide?
A batch COA can be provided. SDS/MSDS and TDS/specification sheets are also available. Additional statements or regulatory documents depend on the selected grade, manufacturer and destination-market requirement.
10. What information should I provide for a quotation?
Please provide the intended application, required standard or specification, order quantity, preferred packaging, destination country and delivery postcode. For regulated applications, also state the required technical and compliance documents.
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