Description

Rhodizonic Acid, Disodium Salt Dihydrate is a specialized analytical reagent primarily used as a sensitive colorimetric indicator. This compound is valued for its selective chelating properties, which enable the detection and quantification of specific metal ions in complex matrices. It is essential for research and quality control laboratories in the chemical, pharmaceutical, and environmental monitoring sectors seeking reliable and precise analytical methods.

Application

• Analytical Chemistry: As a sensitive colorimetric reagent for the detection and determination of barium, strontium, and lead ions.
• Environmental Testing: Used in water and soil analysis to identify and measure trace levels of heavy metal contaminants.
• Pharmaceutical Research: Employed in the development and validation of analytical methods for metal impurity profiling in active pharmaceutical ingredients (APIs) and excipients.
• Material Science: Acts as a complexing agent in the synthesis and study of novel coordination compounds and metal-organic frameworks (MOFs).
• Quality Control Labs: Utilized for in-process testing and final product release in industries where metal content is a critical specification.
• Educational Purposes: Serves as a teaching tool in university chemistry labs for demonstrating qualitative inorganic analysis and complexometric titrations.

Basic Information

Product Name	Rhodizonic Acid, Disodium Salt Dihydrate
CAS No.	166316-02-5
Molecular Formula	C6H2Na2O8 · 2H2O
Molecular Weight	304.08 g/mol (Dihydrate)
Synonyms	Disodium Rhodizonate Dihydrate; Rhodizonic Acid Disodium Salt; Sodium Rhodizonate; 1,2-Dihydroxy-3,4,5,6-tetraoxocyclohex-1-ene-1,2-diolate Disodium Salt Dihydrate; 5,6-Dihydroxy-5-cyclohexene-1,2,3,4-tetrone Disodium Salt Dihydrate; Tetrahydroxy-1,4-benzoquinone Disodium Salt Dihydrate; Rhodizonic Acid Sodium Salt
EINECS	Contact for details

Quality Control

Our Rhodizonic Acid, Disodium Salt Dihydrate is manufactured under strict quality protocols to ensure batch-to-batch consistency and high purity suitable for analytical applications. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing parameters such as assay, identity, and impurity profiles. We adhere to relevant industry standards for laboratory reagents to support your research and compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). The product is light-sensitive (store away from light) and may be hygroscopic; keep the container tightly sealed to minimize exposure to moisture.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	10.0 - 12.0% (corresponding to dihydrate)
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Clear, yellow solution at 1% w/v

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.