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Merck

1.02404

Supelco

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
MDL number:
MFCD00011406
UNSPSC Code:
41116107
EC Index Number:
231-831-9
NACRES:
NA.24

Key Documents

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Agency

ISO 17025
reag. Ph. Eur.
reag. USP

Quality Level

300

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

Related Categories

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

Pictograms

Flame over circleExclamation mark
GHS03,GHS07

Signal Word

Danger

Hazard Statements

H272 - H302 - H319

Hazard Classifications

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

Storage Class Code

5.1B - Oxidizing hazardous materials

WGK

WGK 1

Flash Point(F)

does not flash

Flash Point(C)

does not flash

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

Analytical Method: Analytical Quality Assurance, Standard for Chlorine dioxide

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

Articles

Importance of Volumetric Solution Standardization

The titer determination or standardization of a titration solution is essential for accurate and reliable titration results. High quality solutions verified by high quality standards are the base for a reliable determinations.

Global Trade Item Number

SKUGTIN
1.02404.010004022536555805
1.02404.010304054839650604