Revised 09/09/2019

Data Sheet

GHS Product Identifier: 101.07, Potassium Iodide Technical; 101.24, Potassium Iodide USP; 101.14, Potassium Iodide ACS; 101.08, Potassium Iodide 45% Soln.; 101.09, Potassium Iodide 50% Soln.; 101.84, Potassium Iodide Photo Grade.

Formula Description: Technical:Off white to light brown crystals or granular powder. USP/ACS/Photo:Colorless or white crystals or granular powder; slightly hygroscopic in moist air. Tends to cake during storage. On long exposure to airbecomes yellow due to liberation of iodine. Light and moisture accelerates decomposition. 45% & 50% Solution:Clear colorless to light yellow solution.

Recommended Use: Potassium Iodide is an inorganic halogenated salt that is used inpolymer industry in improving structural properties 1-2. It is a corrosion inhibitor/acid intensifier in oilfield gas production3-4, used in x-ray filmsowing to luminescence properties5, LCD manufacturingas a polarizer6, nylon stabilizer7, trace mineral in animal feeds and/or dietary supplement and food additive8.

Potassium Iodide (USP) General Properties:Technical/USP/ACS

General Properties: Technical / USP / ACS
Molecular Weight 166.0 Density 3.12 (25°C)
Solubility 144 g/100 ml H2O (20°C) Solubility 208 g/100 ml H2O (100°C)
General Properties:45% & 50% Solution
45% Solution Density 12.2 lbs/gal1.46 g/ml
50% Solution Density 12.77 lbs/gal1.54 g/ml
General Properties:Photo Grade
Molecular Weight166.0 Composition Iodine 76.45% Potassium 23.55%
Solubility 144 g/100 ml H2O (20°C) Solubility 208 g/100 ml H2O (100°C)
Chemical Product Specifications
Assay 98.0% min
45% Solution 50% Solution
Assay 44.5% -45.5% 49.5% -50.4%
pH (as is) 7.0 -11.0 7.0 -11.0

Deepwater’s PurI2ty products offer you full traceability for all raw materials.

All products are manufactured under current Good Manufacturing Practices (cGMP)in our US FDA registered plant. FEI #2013633

PurI2tyUSP PurI2tyACS PurI2tyPhoto
Assay 99.0% –101.5% (Anhydrous) 99.0% min(as is) 99.0% min(as is)
Identification USP Standards A&B
Alkalinity USP Standards
pH (5% Solution) 6.0 –9.2 6.0 –9.2
Insoluble Matter 0.005% max 0.005% max
Loss on Drying 1.0% max 0.2% max 0.2% max
PurI2tyUSP PurI2tyACS PurI2tyPhoto
Chloride & Bromide (as Cl) 0.01% max 0.01% max
Iodate (IO3) 4 ppm max 3 ppm max 3 ppm max
Nitrogen Compounds (as N) 0.001% max
Phosphate (PO4) 0.001% max 0.001% max
Sulfate (SO4) 0.005% max 0.005% max
Nitrate, Nitrite & Ammonia USP Standards
Thiosulfate & Barium USP Standards
Barium (Ba) 0.002% max 0.002% max
Heavy Metals (as Pb) 5 ppm max 5 ppm max
Iron (Fe) 3 ppm max 3 ppm max
Calcium (Ca) 0.002% max 0.002% max
Magnesium (Mg) 0.001% max 0.001% max
Sodium (Na) 0.005% max 0.005% max
Elemental Impurities Class 1 Cd, Pb, As, Hg
Elemental Impurities Class 2A Co, V, Ni

*Compendial grades conform to current USP and ACS editions

Standard Packaging
Net Weight Packaging Product
50 lbs. LDPE 3 gal Pail Tech Only
25 lbs. LDPE 2 gal Pail USP/ACS
100 lbs. UN1G 8 gal Fiberdrum USP/ACS
65 lbs. 5 gal HDPE Drum 45% Soln
600 lbs. 55 gal HDPE Drum 45% Soln
650 lbs. 55 gal HDPE Drum 50% Soln

Material packaged with Saran inner liner and polyethylene out liner; suitable for export. Curtec drum does not include liner.


1. Nadimicherla R, Kalla R, Muchakayala R, Guo X (2015) Effects of potassium iodide (KI) on crystallinity, thermal stability, and electrical properties of polymer blend electrolytes (PVC/PEO: KI). Solid State Ionics 278:260–267

2. Solid State CommunicationsVolume 149, Issues 31–32, August 2009, Pages 1282-1287 Effect of nanofillers on thermal and transport properties of potassium iodide–polyethylene oxide solid polymer electrolyte

3. Journal of Applied ElectrochemistryAugust 2004, Volume 34, Issue 8, pp 833–839 Synergistic Influence of Poly(4-Vinylpyridine) and Potassium Iodide on Inhibition of Corrosion of Mild Steel in 1M HCl L. Larabi1Y. HarekM. Traisnel2 A. Mansri

4. Salah Merah, Lahcene Larabi, Omar Benali, Yahia Harek, (2008) “Synergistic effect of methyl red dye and potassium iodide on inhibition of corrosion of carbon steel in 0.5 M H2SO4”, Pigment & Resin Technology, Vol. 37 Issue: 5, pp.291-298

5. An X-Ray Study of Formamide and Solutions of Potassium Iodide in FormamideR. DeSando, and G. BrownJ. Phys. Chem., 1968, 72 (4), pp 1088–1091

6. A Study on the Heat Resistance and Polarization Characteristics of Poly(vinyl alcohol)-I2 Complex Films Prepared with a Potassium iodideApplied Chemistry for Engineering Volume 10 Issue 4 / Pages.603-607 / 1999 / 1225-0112(pISSN) / 2288-4505(eISSN)Oh, Se Young ; Shin, Dong Yoon

7. Structure of iodide ions in iodinated nylon 6 and the evolution of hydrogen bonds between parallel chains in nylon 6N. S. Murthy, Macromolecules, 1987, 20 (2), pp 309–316

8. Waszkowiak, K. and Szymandera‐Buszka, K. (2008), Effect of storage conditions on potassium iodide stability in iodised table salt and collagen preparations. International Journal of Food Science & Technology, 43: 895-899.

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