Description
Chromotropic acid disodium salt is supplied as the dihydrate at a minimum purity of 98,5 %, p.a., ACS, with CAS number 5808-22-0 and empirical formula C₁₀H₆Na₂O₈S₂ · 2 H₂O. The molar mass is 400,30 g/mol, supporting accurate preparation of analytical solutions. This reagent is used in chemical analysis where chromotropic acid derivatives serve as complexing or chromogenic agents, including procedures that rely on defined disodium salt stoichiometry. The product is available from manufacturer Carl ROTH and is specified with EG number 204-972-9 together with p.a. and ACS grade designations. These attributes make it suitable for laboratories that require high-purity organic sulfonated reagents for quantitative work. The dihydrate form offers a stable hydration state for weighing and dissolution, facilitating consistent performance in research and quality-control applications that depend on chromotropic acid chemistry.
This article is part of Acids, in Acids & bases.
Key features
- Assay (titr.): ≥98,5 %
- Water (KF): 8,5-9,5 %
- Appearance of solution (5 % in H2O): clear solution
- Suitability for determination of nitrate and formaldehyde: complies
- CAS number: 5808-22-0
- Pack sizes: 10 g, 25 g
- EG nr.: 204-972-9
- Purity: min. 98,5 %, p.a., ACS
- Empirical formula: C₁₀H₆Na₂O₈S₂ · 2 H₂O
- Molar mass: 400,30 g/mol
- Technical Information Sheet:
- Safety Data Sheet:
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Questions about Chromotropic acid disodium salt, min. 98,5 %, p.a., ACS, 10 g, glass
What is this article?
Chromotropic acid disodium salt, min. 98,5 %, p.a., ACS, 10 g, glass is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Acids, inside Acids & bases, in Lab chemicals.
An acid on this shelf is the substance itself, concentrated or as a stated solution: hydrochloric, sulfuric, nitric, acetic and the rest. Concentration, purity and the trace metals decide the use. A concentrated acid and a volumetric solution of the same name are different products, and both burn.
An acid donates a proton. A base accepts one. In the bottle, the practical differences are the concentration, the purity and the anion or cation that comes along. Concentrated mineral acids are a different article from a dilute volumetric solution. The water in the acid, and the trace metals, decide whether it can be used for analysis. Check the substance on PubChem and the classification on ECHA CLP. Transport is the UNECE dangerous-goods framework. The legal texts are the CLP Regulation and REACH.
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Shelves beside this one are Bases & alkalis.
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