42019

Potassium dichromate

reference material for titrimetry, certified by BAM, ≥99.5%

• Synonym(s): Potassium bichromate
• Linear Formula: K₂Cr₂O₇
• CAS Number: 7778-50-9
• Molecular Weight: 294.18
• EC Number: 231-906-6
• MDL number: MFCD00011367
• UNSPSC Code: 41116107
• PubChem Substance ID: 329756173
• NACRES: NA.24

Properties

• grade: reference material
• Quality Level: 100
• Assay: ≥99.5%
• technique(s): titration: suitable
• mp: 398 °C (lit.)
• format: neat
• SMILES string: [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O
• InChI: 1S/2Cr.2K.7O/q;;2*+1;;;;;;2*-1
• InChI key: KMUONIBRACKNSN-UHFFFAOYSA-N

Description

General description

Potassium dichromate is an oxidimetric standard produced under stringent conditions and measured with the highest possible precision. Its content determination and homogeneity assessment are performed using volumetric redox titration as the primary analysis method.

Application

It finds its use as a reference material for the standardization of volumetric solutions in redox titrations.

Features and Benefits

• Available in a neat format in a secure glass bottle to ensure its stability for the entire shelf life until opened.
• Traceable to NIST SRMs
• High-quality offering accurate titer determinations
• Accompanied by a certificate of analysis (CoA)

Analysis Note

Exact concentration, expiry date, traceability and detailed information on certification can be found on the certificate and certification report, included in each package. Content and expiry date on label.

Safety Information

• Pictograms: GHS03,GHS05,GHS06,GHS08,GHS09
• Signal Word: Danger
• Hazard Statements: H272 - H301 - H312 - H314 - H330 - H334 - H335 - H340 - H350 - H360FD - H372 - H410
• Precautionary Statements: P210 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• 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
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves