Accéder au contenu
Merck

Principaux documents

Voir toute la documentation

1.02403

Potassium dichromate

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

Synonyme(s) :

Potassium dichromate, Potassium bichromate, Potassium pyrochromate

Se connecter pour consulter les tarifs organisationnels et contractuels.

Sélectionner une taille de conditionnement

Changer de vue

A propos de cet article

Formule empirique (notation de Hill) :
Cr2K2O7
Numéro CAS:
7778-50-9
Poids moléculaire :
294.18
UNSPSC Code:
41116107
EC Index Number:
231-906-6
NACRES:
NA.24
MDL number:
MFCD00011367
Service technique
Besoin d'aide ? Notre équipe de scientifiques expérimentés est là pour vous.
Laissez-nous vous aider

Quality Level

300

agency

ISO 17025, reag. USP

product line

Certipur®

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

SMILES string

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

InChI

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

InChI key

KMUONIBRACKNSN-UHFFFAOYSA-N

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.

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 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

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

Still not finding the right product?

Explore all of our products under

signalword

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

Classe de stockage

5.1B - Oxidizing hazardous materials

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificats d'analyse (COA)

Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".

Déjà en possession de ce produit ?

Retrouvez la documentation relative aux produits que vous avez récemment achetés dans la Bibliothèque de documents.

Consulter la Bibliothèque de documents