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1.02403

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Potassium dichromate

volumetric standard, secondary reference material for redox titration, traceable to NIST SRM Certipur® Reag. USP

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Synonym(s):
Potassium dichromate, Potassium bichromate, Potassium pyrochromate
Empirical Formula (Hill Notation):
Cr2K2O7
CAS Number:
Molecular Weight:
294.18
MDL number:
EC Index Number:
231-906-6

Agency

ISO 17025
reag. USP

Quality Level

form

solid

potency

90.5 mg/kg LD50, oral (Rat)
1170 mg/kg LD50, skin (Rat)

technique(s)

titration: suitable

pH

3.6 (100 g/L in H2O)

bp

>500 °C/1013 hPa

mp

398 °C

density

2.7 g/cm3 at 20 °C

bulk density

1250 kg/m3

storage temp.

15-25°C

InChI

1S/2Cr.2K.7O/q;;2*+1;;;;;;2*-1

InChI key

KMUONIBRACKNSN-UHFFFAOYSA-N

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This Item
NIST136FP2588P5271
Potassium dichromate volumetric standard, secondary reference material for redox titration, traceable to NIST SRM Certipur® Reag. USP

Supelco

1.02403

Potassium dichromate

Potassium dichromate NIST® SRM® 136f, oxidimetric standard

NIST136F

Potassium dichromate

Potassium dichromate BioXtra, ≥99.5%

Sigma-Aldrich

P2588

Potassium dichromate

Potassium dichromate ReagentPlus®, ≥99.5%

Sigma-Aldrich

P5271

Potassium dichromate

agency

ISO 17025

agency

-

agency

-

agency

-

form

solid

form

-

form

powder or crystals

form

powder

potency

90.5 mg/kg LD50, oral (Rat)

potency

-

potency

-

potency

-

pH

3.6 (100 g/L in H2O)

pH

-

pH

3.6 (100 g/L)

pH

3.6 (100 g/L)

bp

>500 °C/1013 hPa

bp

-

bp

-

bp

-

General description

Potassium dichromate 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.

Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.

Application

It finds its use as a certified reference material (CRM) for the standardization of volumetric solutions in redox titrations, according to 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
  • Accompanied by a certificate of analysis (CoA)

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

related product

Product No.
Description
Pricing

Signal Word

Danger

Hazard Classifications

Acute Tox. 2 Inhalation - Acute Tox. 3 Oral - Acute Tox. 4 Dermal - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B - Eye Dam. 1 - Muta. 1B - Ox. Sol. 2 - Repr. 1B - Resp. Sens. 1 - Skin Corr. 1B - STOT RE 1 Inhalation - STOT SE 3

Target Organs

Cardio-vascular system, Respiratory system

Storage Class Code

5.1B - Oxidizing hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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