If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
221945
Potassium iodide
ACS reagent, ≥99.0%
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
5 g | Estimated to ship onJuly 20, 2026fromMILWAUKEE | $58.00 |
100 g | Estimated to ship onJuly 20, 2026fromMILWAUKEE | $115.00 |
500 g | Estimated to ship onJuly 20, 2026fromMILWAUKEE | $316.00 |
2.5 kg | Estimated to ship onJuly 20, 2026fromMILWAUKEE | $1,120.00 |
12 kg | Estimated to ship onJune 29, 2026fromMILWAUKEE | $2,510.00 |
50 kg | Estimated to ship onJuly 29, 2026fromMILWAUKEE | $7,630.00 |
About This Item
grade
ACS reagent
Quality Segment
vapor pressure
1 mmHg ( 745 °C)
assay
≥99.0%
form
crystals
impurities
≤0.001% N compounds, ≤0.005% insolubles
loss
≤0.2% loss on drying
pH
6.0-9.2 (25 °C, 5%)
mp
681 °C (lit.)
solubility
water: complete (ca.1,430 g/l at 25 °C (77 °F))
anion traces
chloride, bromide (as Cl)-: ≤0.01%, iodate (IO3-): ≤3 ppm, phosphate (PO43-): ≤0.001%, sulfate (SO42-): ≤0.005%
cation traces
Ba: ≤0.002%, Ca: ≤0.002%, Fe: ≤3 ppm, Mg: ≤0.001%, Na: ≤0.005%, heavy metals (as Pb): ≤5 ppm
SMILES string
[K+].[I-]
InChI
1S/HI.K/h1H;/q;+1/p-1
InChI key
NLKNQRATVPKPDG-UHFFFAOYSA-M
General description
Application
Other Notes
Legal Information
1 of 1
This Item | |||
|---|---|---|---|
| form crystals | form crystals | form crystals and lumps | form solid |
| solubility water: complete (ca.1,430 g/l at 25 °C (77 °F)) | solubility water: complete (ca.1,430 g/l at 25 °C (77 °F)) | solubility water: soluble | solubility water: complete (ca.1,430 g/l at 25 °C (77 °F)) |
| assay ≥99.0% | assay ≥99% | assay ≥99.99% trace metals basis | assay 99.0-100.5% (calc. to the dried substance) |
| Quality Level 200 | Quality Level 100 | Quality Level 200 | Quality Level 200 |
| grade ACS reagent | grade ACS reagent, anhydrous | grade - | grade - |
| anion traces chloride, bromide (as Cl)-: ≤0.01%, phosphate (PO43-): ≤0.001%, iodate (IO3-): ≤3 ppm, sulfate (SO42-): ≤0.005% | anion traces chloride, bromide (as Cl)-: ≤0.01%, iodate (IO3-): ≤3 ppm, phosphate (PO43-): ≤0.001%, sulfate (SO42-): ≤0.005% | anion traces (Boron (B)≤ 0.1 ppm) | anion traces iodate (IO3-): in accordance, nitrate (NO3-): in accordance, nitrite (NO2-): in accordance, sulfate (SO42-): ≤100 mg/kg |
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signalword
Danger
hcodes
flash_point_f
Not applicable
flash_point_c
Not applicable
Hazard Classifications
Eye Irrit. 2 - Repr. 1B - STOT RE 2 Oral
target_organs
Thyroid,Liver
Storage Class
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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