CAS 7778-50-9

Potassium dichromate

Description:

Potassium dichromate, with the chemical formula K2Cr2O7 and CAS number 7778-50-9, is a bright orange-red crystalline solid that is highly soluble in water. It is an inorganic compound that serves as a powerful oxidizing agent and is commonly used in various applications, including analytical chemistry, dyeing, and as a corrosion inhibitor. The compound is known for its toxicity and carcinogenic properties, necessitating careful handling and appropriate safety measures. Potassium dichromate exhibits strong oxidizing capabilities, making it effective in redox reactions, and it can react with a variety of organic and inorganic substances. In addition to its industrial uses, it is also utilized in laboratory settings for qualitative analysis and as a reagent. Due to its hazardous nature, it is classified as a dangerous substance, and its use is regulated in many countries to minimize environmental and health risks. Proper disposal and adherence to safety protocols are essential when working with this compound.

Formula: Cr₂H₂O₇·2K

InChI: InChI=1S/2Cr.2K.2H2O.5O/h;;;;2*1H2;;;;;/q2*+1;;;;;;;;;/p-2

InChI key: InChIKey=WFNKVMJUPPUFIO-UHFFFAOYSA-L

SMILES: O([Cr](O)(=O)=O)[Cr](O)(=O)=O.[K]

Synonyms:

• Bichromate de potassium
• C 501
• Chromic acid (H2Cr2O7), potassium salt (1:2)
• Chromic acid (H₂Cr₂O₇), dipotassium salt
• Chromic acid (H₂Cr₂O₇), potassium salt (1:2)
• Chromium potassium oxide (K2Cr2O7)
• Chromium potassium oxide (K₂Cr₂O₇)
• Dichromate de potassium
• Dichromic acid (H2Cr2O7), dipotassium salt
• Dichromic acid (H₂Cr₂O₇), dipotassium salt
• Dichromic acid dipotassium salt
• Dicromato De Potasio
• Dipotassium bichromate
• Dipotassium bichromate (K2Cr2O7)
• Dipotassium bichromate (K₂Cr₂O₇)
• Dipotassium dichromate
• Dipotassium dichromate (K2Cr2O7)
• Dipotassium dichromate (K₂Cr₂O₇)
• Dipotassium dichromate (VI)
• Dipotassium dichromium heptaoxide
• Kaliumdichromat
• Potassium Bichromate
• Potassium Dichromate
• Potassium dichromate (K2(Cr2O7))
• Potassium dichromate (K2Cr2O7)
• Potassium dichromate (K₂(Cr₂O₇))
• Potassium dichromate(VI)
• SRM 935a
• Red potassium chromate
• dipotassium oxido-(oxido-dioxo-chromio)oxy-dioxo-chromium
• Potassium dichromate standard solution
• Chromic acid (H2Cr2O7), dipotassium salt
• CHROMIUM, OIL BASED STANDARD SOLUTION
• CHROMIUM, AAS STANDARD SOLUTION
• CHROMIUM METALLO-ORGANIC STANDARD
• CHROMIUM AA STANDARD
• CHROMIUM AA STANDARD CONCENTRATE
• CHROMIUM ATOMIC ABSORPTION SINGLE ELEMENT STANDARD
• CHROMIUM, ANALYTICAL STANDARD
• CHROMIUM, ORGANIC AAS STANDARD SOLUTION
• CHROMIUM PLASMA EMISSION SPECTROSCOPY STANDARD
• CHROMIUM PLASMA EMISSION STANDARD
• CHROMIUM(III) AA/ICP CALIBRATION/CHECK STANDARD
• CHROMIUM POWDER
• BICHROMATE POTASSIUM
• CHROMIUM ATOMIC ABSORPTION STANDARD
• CHROMIUM
• CHROMIUM AA SINGLE ELEMENT STANDARD
• CHROMIUM, PLASMA STANDARD SOLUTION
• CHROMIUM ICP STANDARD
• CHROMIUM METAL

Potassium dichromate, ACS, 99.0% min

CAS: 7778-50-9

Maximum level of impurities: Insoluble matter 0.005%, Loss on drying 0.05%, Cl 0.001%, SO4 0.005%, Ca 0.003%, Fe 0.001%, Na 0.02%

Formula: Cr₂K₂O₇

Purity: 99.0%

Molecular weight: 294.18

Ref: 02-013450

Potassium dichromate, 0.025N Standardized Solution

CAS: 7778-50-9

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci

Formula: Cr₂K₂O₇

Molecular weight: 294.18

Ref: 02-035589

Potassium dichromate, 0.1N Standardized Solution

CAS: 7778-50-9

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Formula: Cr₂K₂O₇

Molecular weight: 294.18

Ref: 02-035618

Potassium dichromate, 0.25N Standardized Solution

CAS: 7778-50-9

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Sci

Formula: Cr₂K₂O₇

Molecular weight: 294.18

Ref: 02-035587

Potassium dichromate, 99%

CAS: 7778-50-9

Potassium dichromate is most often used as an oxidizing agent in laboratories and industries. It is used as a precursor to prepare potassium chrome alum which finds application in leather finishing and tanning. It is utilized in the preparation of chromic acid for cleaning glassware and etching mate

Formula: Cr₂K₂O₇

Purity: 99%

Color and Shape: Orange, Crystals or powder or crystalline powder

Molecular weight: 294.18

Ref: 02-A18722

Potassium dichromate, 99+% (ACS)

CAS: 7778-50-9

Potassium dichromate, 99+% (ACS)

Formula: K₂Cr₂O₇

Purity: 99+%

Color and Shape: orange xtl.

Molecular weight: 294.19

Ref: 08-93-1918

Reagecon Potassium Dichromate Solution according to European Pharmacopoeia (EP) Chapter 4 (4.1.1)

CAS: 7778-50-9

Reagecon Potassium Dichromate Solution is a high purity stable product developed and tested for European Pharmacopoeia (EP) applications.  These include use as a reagent in the performance of tests outlined in several EP monographs. - This Reagecon EP reagent is accurate, stable and reproducible. Stability is proven (either opened or unopened) for the shelf life of this product.

Color and Shape: Liquid

Ref: 07-106950105

Reagecon Potassium Dichromate 0.167M (1.0N) Analytical Volumetric Solution (AVL)

CAS: 7778-50-9

Reagecon's Potassium Dichromate 0.167M (1.0N) Analytical Volumetric Solution (AVL) is a fully factorised, high purity, stable product, developed and tested for oxidation/reduction titrations.  This Analytical Volumetric Solution, also called titrant, standard titrant or standard solution, is tested to a specification of ± 0.1%. It is a reagent of known concentration, that is dispensed from a burette or other dispensing apparatus to a sample (analyte), until a reaction between the two liquids is judged to be complete.  The product may be used for manual titrations, or more commonly automatic titrations, to determine the end points by detection of any of several properties.  Oxidation/reduction titrations depend on changes in the electropotential of the oxidation reduction system and always involves a reaction between an oxidising and reducing pair. - Titration is a rapid, economical and versatile analytical tool. This Reagecon titrant is accurate, stable, reproducible and fully factorised. Titrations performed with this product, exhibit defined stoichiometry, are quantitative, establish an equilibrium that is definitive and fast and provide unambiguous results. Stability is proven (either opened or unopened) for the shelf life of this product.

Color and Shape: Liquid

Ref: 07-KC2016F

Reagecon Potassium Dichromate Solution according to European Pharmacopoeia (EP) Chapter 4 (4.1.1)

CAS: 7778-50-9

Reagecon Potassium Dichromate Solution is a high purity stable product developed and tested for European Pharmacopoeia (EP) applications.  These include use as a reagent in the performance of tests outlined in several EP monographs. - This Reagecon EP reagent is accurate, stable and reproducible. Stability is proven (either opened or unopened) for the shelf life of this product.

Color and Shape: Liquid

Ref: 07-10695015

Potassium Dichromate

CAS: 7778-50-9

Formula: Cr₂K₂O₇

Purity: >98.0%(T)

Color and Shape: Light yellow to Yellow to Orange powder to crystal

Molecular weight: 294.18

Ref: 3B-P3156

Potassium Dichromate

Controlled Product

CAS: 7778-50-9

Applications Potassium Dichromate is toxic if ingested, however has been used in tracing methods. Also, is used in treating patients suffering from COPD and related tracheal secretions.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Frass, M. et al.: Chest., 127, 936 (2005); Mascorro, J. et al.: Stain. Technol., 50, 391 (1975);

Formula: Cr₂O₇·2K

Color and Shape: Neat

Molecular weight: 294.18

Ref: TR-P695110

Potassium Dichromate

CAS: 7778-50-9

Formula: K₂Cr₂O₇

Molecular weight: 215.99 2 39.10

Ref: 4Z-D-205001

Potassium Dichromate ACS, ExiPlus, Multi-Compendial, 99.9%

CAS: 7778-50-9

Formula: K₂Cr₂O₇

Purity: min. 99.9%

Color and Shape: Orange to red, Crystalline powder/crystals/solid, Clear, Orange to red

Molecular weight: 294.18

Ref: SR-55353

Potassium Dichromate pure, 99.5%

CAS: 7778-50-9

Formula: K₂Cr₂O₇

Purity: min. 99.5%

Color and Shape: Orange, Crystalline powder, Clear, Orange

Molecular weight: 294.18

Ref: SR-13250

Potassium Dichromate ACS, 99.9%

CAS: 7778-50-9

Formula: K₂Cr₂O₇

Purity: min. 99.9%

Color and Shape: Orange to red, Crystalline powder/crystals/solid, Clear, Orange to red

Molecular weight: 294.18

Ref: SR-80233