Description
Potassium dichromate is a high-purity inorganic salt supplied at min. 99,5 % and graded p.a., ACS and ISO for demanding analytical work. With the empirical formula K₂Cr₂O₇, CAS number 7778-50-9 and EG nr. 231-906-6, it has a molar mass of 294,18 g/mol and a density of 2,68 g/cm³. This reagent is widely used in volumetric analysis, oxidation reactions and as a reference material in inorganic and wet-chemical laboratories. supports routine preparation of standard solutions and controlled handling of the solid. Manufactured by Carl ROTH, the material meets established p.a., ACS and ISO quality expectations for salts intended for analysis. Its defined composition and physical data make it suitable for calibration, method development and general laboratory oxidation chemistry where consistent dichromate content is required. Suitable for research, quality control and teaching laboratories that specify ACS- or ISO-grade potassium dichromate.
This article is part of Volumetric standard solutions (titration), in Analytical standards & reference materials.
Key features
- Assay (iodom.): ≥99,5 %
- In H2O insoluble matter: ≤0,005 %
- Loss on drying (105 °C): ≤0,05 %
- Chloride (Cl): ≤0,001 %
- Sulphate (SO4): ≤0,005 %
- Lead (Pb): ≤0,005 %
- Calcium (Ca): ≤0,002 %
- Iron (Fe): ≤0,001 %
- Copper (Cu): ≤0,001 %
- Sodium (Na): ≤0,02 %
- CAS number: 7778-50-9
- Pack sizes: 500 g, 1 kg, 100 g
- EG nr.: 231-906-6
- Purity: min. 99,5 %, p.a., ACS, ISO
- Molar mass: 294,18 g/mol
- Density: 2,68 g/cm³
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
DangerHazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)
Recently viewed
You may also like
Browse related categories
Category
Analytical standards & reference materials
Sub-category
Volumetric standard solutions (titration)
Catalogue
Brand
Questions about Potassium dichromate, min. 99.5 %, p.a., ACS, ISO, 500 g, plastic
What is this article?
Potassium dichromate, min. 99.5 %, p.a., ACS, ISO, 500 g, plastic is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Volumetric standard solutions (titration), inside Analytical standards & reference materials, in Lab chemicals.
A volumetric standard solution is a reagent of stated concentration for titration, such as a stated molarity of acid, base or silver nitrate. The factor or the exact titre is on the certificate. Using the nominal molarity when a factor is printed is a systematic error.
A reference material is the article against which another result is compared. Its value is stated, and the uncertainty of that value is part of the product. An ICP or ion standard is a solution of known concentration. A volumetric standard is for titration. A chromatography standard is the peak you match. The grade names, including pharmacopoeia and ASTM, say which impurities were limited. Identity is checked on PubChem. Names follow IUPAC. Medicinal grades follow the European Pharmacopoeia and USP.
Which category should I open next?
The category is Analytical standards & reference materials. The sub-category is Volumetric standard solutions (titration). The catalogue is Lab chemicals.
Shelves beside this one are ICP, AAS & ion standards, Chromatography standards (GC, HPLC, pesticides), Reference substances & reagents (other), Reagents for analysis (Ph. Eur., ASTM, DIN), Spectroscopy & physical property standards and Indicators & indicator solutions.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
We deliver across the EU, usually within 2 to 5 working days. More is on Delivery across the EU. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.
