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207969

Potassium iodide

ReagentPlus®, 99%

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Pack SizeSKUAvailabilityPrice
100 g

Available to ship TODAYfromMILWAUKEE

$70.50
500 g

Available to ship TODAYfromMILWAUKEE

$211.00

About This Item

Linear Formula:
KI
CAS Number:
Molecular Weight:
166.00
NACRES:
NA.21
PubChem Substance ID:
UNSPSC Code:
12352302
EC Number:
231-659-4
MDL number:
Assay:
99%
Form:
powder or crystals
Solubility:
water: soluble(lit.)

$70.50


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vapor pressure

1 mmHg ( 745 °C)

Quality Level

product line

ReagentPlus®

assay

99%

form

powder or crystals

pH

~6.9 (20 °C, 50 g/L)

mp

681 °C (lit.)

solubility

water: soluble(lit.)

SMILES string

[K+].[I-]

InChI

1S/HI.K/h1H;/q;+1/p-1

InChI key

NLKNQRATVPKPDG-UHFFFAOYSA-M

General description

Potassium iodide (KI) is an inorganic potassium salt. KI is a colorless solid having cubic crystal system. It has been prepared by reacting hydroiodic acid with potassium hydroxide or potassium carbonate. Alumina loaded with potassium iodide has been employed as catalyst for the preparation of biodiesel by the transesterification reaction of soybean oil with methanol.

Application

Potassium iodide (KI) may be used in the preparation of standard iodide stock solution for the size exclusion chromatographic method for the estimation of iodide.[1] It may be used in the spectrophotometric determination of advanced oxidation protein products (AOPP) in plasma.[2]

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany
Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

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This Item
22194579358230315
form

powder or crystals

form

crystals

form

powder or crystals

form

solid

solubility

water: soluble(lit.)

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))

assay

99%

assay

≥99.0%

assay

99%

assay

≥99.0%, 99.0-100.5% (calc. to the dried substance)

Quality Level

100

Quality Level

200

Quality Level

100

Quality Level

200

mp

681 °C (lit.)

mp

681 °C (lit.)

mp

681 °C (lit.)

mp

681 °C (lit.)

pH

~6.9 (20 °C, 50 g/L)

pH

6.0-9.2 (25 °C, 5%)

pH

~6.9 (20 °C, 50 g/L)

pH

6.0-8.0 (20 °C, 5%)


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pictograms

Health hazard

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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Eagleson M.
Concise Encyclopedia Chemistry, 889-889 (1994)
H B Li et al.
Journal of chromatography. A, 918(2), 335-339 (2001-06-16)
A novel method for the determination of iodide by size exclusion chromatography was established. The method was simple and highly sensitive with good precision. Iodide was converted to iodine, then sequestered with starch, and separated from the matrix using a
V Witko-Sarsat et al.
Journal of immunology (Baltimore, Md. : 1950), 161(5), 2524-2532 (1998-09-02)
We previously demonstrated the presence of advanced oxidation protein products (AOPP), a novel marker of oxidative stress in the plasma of uremic patients receiving maintenance dialysis. The present study in a cohort of 162 uremic patients showed that plasma concentrations



Global Trade Item Number

SKUGTIN
207969-100G04061835276561
207969-500G04061835276578

Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. 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

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. 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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