Description

Purpurin Sulfonate is a sulfonated derivative of the naturally occurring anthraquinone dye, purpurin. This modification enhances its solubility and stability in aqueous systems, making it a valuable functional intermediate and colorant. It is primarily utilized in specialized chemical synthesis and as a staining agent in biological and histological applications. Industries requiring high-purity dye intermediates or analytical reagents will find this product essential for their processes.

Application

• As a key intermediate in the synthesis of specialized dyes and pigments.
• As a biological stain for histological and cytological preparations in life science research.
• In the development of pH indicators and chemical sensors due to its color-changing properties.
• For analytical chemistry applications, including chelation and complexometric studies.
• In the formulation of specialized inks and coatings where specific color properties are required.
• As a research chemical for studying sulfonation reactions and anthraquinone chemistry.

Basic Information

Product Name	Purpurin Sulfonate
CAS No.	6486-90-4
Molecular Formula	C14H8O8S
Molecular Weight	336.27 g/mol
Synonyms	1,2,4-Trihydroxyanthraquinone-3-sulfonic acid; Purpurin-3-sulfonic acid; CI 58205; Alizarin Bordeaux; Alizarin Bordeaux B; Alizarin Bordeaux S; 3-Sulfopurpurin; Purpurin-3-sulfonate
EINECS	229-356-1

Quality Control

Our Purpurin Sulfonate is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including identification, purity assay, and impurity profiling, to ensure it meets exacting standards for research and industrial use. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Reddish-brown to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfate Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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