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1.02404

Potassium iodate

volumetric standard, secondary reference material for iodometry, traceable to NIST SRM Certipur®

Synonym(s):

Potassium iodate

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About This Item

Empirical Formula (Hill Notation):
IKO3
CAS Number:
7758-05-6
Molecular Weight:
214.00
UNSPSC Code:
41116107
EC Index Number:
231-831-9
NACRES:
NA.24
MDL number:
MFCD00011406
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Quality Level

300

agency

ISO 17025, reag. Ph. Eur., reag. USP

form

solid

technique(s)

titration: suitable

pH

6 (20 °C, 50 g/L in H2O)

mp

560 °C (decomposes)

solubility

92 g/L

density

3.98 g/cm3 at 20 °C

bulk density

2000 kg/m3

storage temp.

15-25°C

SMILES string

[K+].[I](=O)(=O)[O-]

InChI

1S/HIO3.K/c2-1(3)4;/h(H,2,3,4);/q;+1/p-1

InChI key

JLKDVMWYMMLWTI-UHFFFAOYSA-M

General description

Potassium iodate is a volumetric standard manufactured under stringent conditions and measured with the highest possible precision. Its mass fraction is determined by potentiometric titration, and it is qualified in a DIN EN ISO/IEC 17025 accredited laboratory.

Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.

In our effort to be more sustainable, we′re going digital with COAs-download them directly from our website. Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.

Application

It is used as secondary reference material for the standardization of volumetric solutions in iodometric titrations, following USP and Ph. Eur.

Features and Benefits

  • Available as a solid in a secure glass bottle to ensure its stability for the entire shelf life until opened.
  • Certified reference material according to ISO 17034
  • High-purity material traceable to NIST SRMs
  • Qualified in a DIN EN ISO/IEC 17025 accredited laboratory
  • In accordance with the chapter reagents of USP and Ph. Eur
  • High-quality offering accurate titer determinations

Packaging

SKU-pack size numbers ending with a "3" are SmartChemicals with an RFID tag on the label for seamless data transfer to the instrument, e.g. xxxxxx1003 or xxxxxxx 4003. More information on www.sigmaaldrich.com/SmartChemicals

Legal Information

CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany

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pictograms

Flame over circleExclamation mark
GHS03,GHS07

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Ox. Sol. 2

Storage Class

5.1B - Oxidizing hazardous materials

wgk

WGK 1

flash_point_f

does not flash

flash_point_c

does not flash

Regulatory Information

危险化学品

This item has

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Protocols

分析方法：分析质量保证，二氧化氯标准品

二氧化氯标准溶液的制备，符合 DIN EN ISO 7393

分析方法：分析质量保证，游离氯标准品 (DIN)

游离氯标准溶液的制备，符合 DIN EN ISO 7393

Analytical Method: Analytical Quality Assurance, Standard for Chlorine dioxide

Preparation of a standard solution for Chlorine dioxide acc. to DIN EN ISO 7393

View All Protocols

Articles

Importance of Volumetric Solution Standardization

The titer determination or standardization of a titration solution is essential for accurate and reliable titration results.

Titration 4.0

SmartChemicals enable wireless CoA data transfer, reducing human error in titration experiments.

Global Trade Item Number

SKUGTIN
102404010004022536555805
102404010304054839650604