Description
1-Hydroxyethane-1,1-diphosphonic acid (HEDP), min. 90 %, is an organophosphonic acid with the empirical formula C₂H₈O₇P₂. Registered under CAS number 2809-21-4 and EG number 220-552-8, this compound is HEDP is widely employed as a scale inhibitor and chelating agent in water-treatment research, corrosion studies and industrial formulation development, where strong binding of calcium, iron and other metal ions is required. The minimum assay of 90 % provides a reliable starting point for stoichiometric calculations and comparative performance tests. From manufacturer Carl ROTH, the material arrives ready for dissolution or direct incorporation into experimental matrices. Its well-defined identity supports reproducible work in synthesis, analytical method development and process chemistry. The solid presentation allows precise dosing, while the accompanying hazard classification (UN 1759) guides appropriate laboratory handling. This grade is intended for professional scientific environments that need a consistent diphosphonic acid building block.
This article is part of Acids, in Acids & bases.
Key features
- Assay: ≥90 %
- CAS number: 2809-21-4
- Pack sizes: 100 g, 500 g, 1 kg
- EG nr.: 220-552-8
- Purity: min. 90 %
- Empirical formula: C₂H₈O₇P₂
- Technical Information Sheet:
- Safety Data Sheet:
Compliance & Safety Information
DangerHazard Statements (H-Phrases)
Precautionary Statements (P-Phrases)
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Questions about 1-Hydroxyethane-1,1-diphosphonic acid, (HEDP), min. 90 %, 100 g, plastic
What is this article?
1-Hydroxyethane-1,1-diphosphonic acid, (HEDP), min. 90 %, 100 g, plastic 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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