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
746428
Potassium iodide
anhydrous, free-flowing, Redi-Dri™, ACS reagent, ≥99%
Select a Size
| Pack Size | SKU | Availability | Price |
|---|---|---|---|
| 100 g | Estimated to ship onApril 15, 2027fromMILWAUKEE | $108.00 | |
| 500 g | Estimated to ship onApril 15, 2027fromMILWAUKEE | $284.00 | |
| 1 kg | Estimated to ship onApril 15, 2027fromMILWAUKEE | $451.00 | |
| 2.5 kg | Estimated to ship onApril 15, 2027fromMILWAUKEE | $993.00 | |
| 6 x 500 g | Estimated to ship onApril 17, 2026fromMILWAUKEE | $1,550.00 |
About This Item
Quality Level
grade
ACS reagent, anhydrous
vapor pressure
1 mmHg ( 745 °C)
product line
Redi-Dri™
assay
≥99%
form
crystals
quality
free-flowing
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
Redi-Dri™ technology eliminates clumping and the need for complicated procedures to keep your salts free-flowing. Keeping your salts dry helps improve your results by giving accurate measurements and easier-to-handle salts and buffers. Rather than drying your salts in an oven or desiccator or breaking them apart manually, Redi-Dri™ ensures that your salts will remain easy-to-use for months without worrying about anti-caking agents. Even after repeated openings you can be assured that your results are always accurate. Redi-Dri™ saves you time, energy and money by keeping your salts usable for longer!
Application
- Conversion of aromatic primary amines to the corresponding nitro compounds in the presence of tert-butyl hydroperoxide as oxidant.
- Conversion of aryl halide to aryl iodides in the presence of nickel catalysts.
- Preparation of sulfonated oxindoles from activated alkenes and sulfonylhydrazides in water and in the presence of 8-crown-6 and tert-butyl hydroperoxide.
Features and Benefits
- Increased efficiency – Eliminate time and effort of loosening hardened powders
- Safety – Avoid risks of using tools of force to break up clumps
- Economy – Faster preparation and solvation increase productivity and reduce costs
- Assured quality – Excellent, expert-tested quality with no anti-caking agents
- Flexible volumes – Available from research amounts to scale-up quantities
Legal Information
1 of 1
This Item | |||
|---|---|---|---|
| form crystals | form solid | form solid | form crystals and lumps |
| assay ≥99% | assay ≥99.0%, 99.0-100.5% (calc. to the dried substance) | assay 99.0-100.5% (calc. to the dried substance) | assay ≥99.99% trace metals basis |
| 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: complete (ca.1,430 g/l at 25 °C (77 °F)) | solubility water: soluble |
| Quality Level 100 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| grade ACS reagent, anhydrous | grade - | grade - | grade - |
| vapor pressure 1 mmHg ( 745 °C) | vapor pressure 1 mmHg ( 745 °C) | vapor pressure 1 mmHg ( 745 °C) | vapor pressure 1 mmHg ( 745 °C) |
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signalword
Danger
hcodes
Hazard Classifications
STOT RE 1 Oral
target_organs
Thyroid
Storage Class
6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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Articles
Redi-Dri™ prevents hygroscopic powders, such as inorganic salts, from absorbing moisture and forming clumps, leaving the salts free-flowing every time.
Global Trade Item Number
| SKU | GTIN |
|---|---|
| 746428-1KG | 04061832890883 |
| 746428-6X500G | 04061832890920 |
| 746428-12KG | 04061833692981 |
| 746428-100G | 04061832890876 |
| 746428-2.5KG | 04061832890913 |
| 746428-500G | 04061835347100 |
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How can I determine the shelf life / expiration / retest date of this product?
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Helpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
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
Helpful?
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How long will material remain free-flowing after it is opened?
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While the exact amount of time your material will remain free-flowing can vary, this largely depends on the ambient storage conditions and how many times it is opened.
Helpful?
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Are there any special storage conditions that must be maintained?
1 answer-
No, Redi-Dri™ products can be stored under the same conditions as the equivalent non-Redi-Dri™ products.
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How does Redi-Dri™ help keep salts and buffers free-flowing?
1 answer-
Redi-Dri™ products are specially handled and the bottle is specially designed to ensure that the product will remain dry without adding impurities or additives to the product. Ensuring that you receive the highest quality material that is easy to handle.
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