Product Details
| Product Name: Potassium Iodide | CAS No.: 7681-11-0 |
| EC-No.: 231-659-4 | Min. Order: 1ton |
| Purity: 99% | Supply Ability: 1000T/M |
| Release date: 2025/11/04 |
Product Name: Potassium Iodide (KI)
1. Identification
Chemical Name: Potassium Iodide
Formula: KI
Molecular Weight: 166.00 g/mol
CAS Number: 7681-11-0
EC / EINECS Number: 231-659-4
2. Grades / Uses
| Grade | Use Cases |
|---|---|
| Industrial Grade | Industrial chemical processes: polymer additives, corrosion inhibitors, dyes, electroplating, photography, etc. |
| Food Grade / FCC / USP / ACS | Food fortification (iodized salt, dietary supplements), pharmaceuticals, food additives. Must meet regulatory food safety standards. |
3. Physical & Chemical Properties
| Property | Typical Value |
|---|---|
| Appearance | White or off-white crystalline powder or granules; slightly hygroscopic |
| Melting Point | ~ 680-681 °C |
| Boiling Point / Decomposition | ~ 1,330 °C (decomposes with iodine release) |
| Density | ~ 3.12 g/cm³ (25 °C) |
| Solubility in Water | ~ 144 g / 100 mL at 20 °C (solubility increases with temperature) |
| Hygroscopicity | Slight; absorbs moisture under humid conditions |
| Odor / Color | Odorless; colorless or white; may yellow on exposure to air, moisture, or light |
4. Purity / Assay & Impurity Limits
| Specification | Industrial Grade | Food Grade / USP / FCC |
|---|---|---|
| Assay (KI, dried basis) | ≥ 98.0% | 99.0 – 101.5% |
| Loss on Drying | ≤ 1.0% | ≤ 1.0% (often ≤ 0.5%) |
| pH (5% solution) | 6.0 - 9.0 (or up to 11.0 depending on process) | 6.0 - 9.0 |
| Insoluble Matter | ≤ 0.005% | ≤ 0.005% |
| Iodate (IO₃⁻) | Not always specified | ≤ 4 ppm |
| Chloride / Bromide | ≤ 0.01% | ≤ 0.01% |
| Iron (Fe) | ≤ 10 ppm | ≤ 3-10 ppm |
| Lead (Pb) | ≤ 5 ppm | ≤ 4 ppm |
| Other Heavy Metals | Limited per technical specification | Must meet food/pharma regulatory limits |
| Other Impurities | Sulfate, nitrate, nitrite, ammonia, thiosulfate controlled | Stricter limits + microbial/endotoxin tests if required |
5. Stability, Storage & Handling
Storage Conditions: Keep tightly closed, protected from moisture, air, and light. Store in a cool, dry, well-ventilated area.
Shelf Life: Typically 2-3 years under recommended storage conditions. Product may yellow due to iodine release if improperly stored.
Handling Precautions: Avoid inhalation of dust. Use gloves and eye protection. Prevent contact with strong oxidizers or acids.
6. Regulatory & Food Safety
Applicable Standards: USP, FCC, ACS, Ph. Eur., BP (for high-purity grades)
Food Use Regulations: Approved as a nutrient supplement for food fortification (e.g., iodized salt) under most food regulations worldwide
Heavy Metal Limits: Must comply with food safety requirements for Pb, As, Cd, Hg (typically <1-4 ppm depending on element)
7. Typical Analytical Data (Food Grade Example)
| Test Parameter | Typical Result |
|---|---|
| Assay (KI) | 99.0 - 101.5 % |
| Loss on Drying @ 105-110 °C | ≤ 1.0 % |
| pH (5% solution) | 6.0 - 10.0 |
| Insoluble Matter | ≤ 0.005 % |
| Iodate (IO₃⁻) | ≤ 4 ppm |
| Chloride + Bromide (as Cl⁻) | ≤ 0.01 % |
| Iron (Fe) | ≤ 3-10 ppm |
| Lead (Pb) | ≤ 4 ppm |
| Other Heavy Metals | Within pharmacopeial limits |
8. Safety Data / Toxicology
Acute Toxicity: Oral LD₅₀ (rat) ~ 285 mg/kg
Irritation: May irritate eyes, skin, and respiratory tract
Environmental Impact: Water-soluble; follow local regulations for disposal
9. Packaging
Industrial Grade: Bulk HDPE drums, fiber drums, or bags (non-food contact packaging)
Food Grade: Food-approved lined drums or bags; may be certified Kosher, Halal, GMP compliant
10. Summary
Industrial grade has slightly lower purity and wider impurity tolerances, suitable for chemical processing.
Food grade must meet strict purity, heavy metal, and iodate specifications to ensure safety for human consumption.
For more information, please click on the website：https://www.khonorchem.com
Company Profile Introduction
You may like
Recommended supplier
| Product name | Price | Suppliers | Update time | |
|---|---|---|---|---|
| $10.00/1kg |
VIP4Y
|
Hebei Dangtong Import and export Co LTD
|
2025-10-31 | |
| $0.00/25kg |
VIP5Y
|
WUHAN FORTUNA CHEMICAL CO., LTD
|
2025-08-26 | |
| $/ |
VIP5Y
|
RongNa Biotechnology Co.,Ltd
|
2025-04-29 | |
| $0.00/1kg |
VIP1Y
|
Chongqing Soarwin Technology Co., Ltd
|
2025-04-09 | |
| $100.00/1kg |
VIP7Y
|
Hebei Chuanghai Biotechnology Co., Ltd
|
2025-03-07 | |
| $144.00/1KG |
Shandong Xuhuang New material CoLTD
|
2025-02-21 | ||
| $0.00/1KG |
Hebei Chuanghai Biotechnology Co., Ltd
|
2024-10-28 | ||
| $50.00/1KG |
VIP5Y
|
Hebei Chuanghai Biotechnology Co,.LTD
|
2024-08-20 | |
| $999.00/5ton |
VIP2Y
|
HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD
|
2024-08-09 | |
| $0.10/1KG |
VIP7Y
|
Shaanxi Dideu Medichem Co. Ltd
|
2024-08-05 |
China- Since: 2025-04-07
- Address: C-309, No. 12 Yuzhou S. Rd, Haizhou, Lianyungang, Jiangsu, China