Description

Alizarin Blue S is a synthetic, water-soluble anthraquinone derivative valued for its distinct colorimetric properties and chelating ability. This compound serves as a critical analytical reagent and a versatile dye intermediate in several high-value industrial processes. It is essential for manufacturers and research laboratories in the chemical, textile, and analytical instrumentation sectors seeking reliable, high-purity colorants and complexometric indicators.

Application

• Complexometric Titration Indicator: Primarily used as a metallochromic indicator for the precise titration of metals like aluminum, iron, and zirconium.
• Analytical Reagent: Employed in spectrophotometric analysis and as a staining agent in histology and microscopy for biological tissues.
• Textile Dyeing Intermediate: Serves as a key precursor in the synthesis of specific blue and violet shades for dyeing natural and synthetic fibers.
• Ink & Pigment Manufacturing: Used in the formulation of specialized inks, toners, and organic pigments requiring stable color properties.
• Research & Development: Utilized in chemical research for studying metal-ligand interactions and developing new chelating agents or sensors.

Basic Information

Product Name	Alizarin Blue S
CAS No.	66675-89-6
Molecular Formula	C17H9NO7S
Molecular Weight	371.32 g/mol
Synonyms	Alizarin Blue S; Alizarin Brilliant Blue BS; Alizarin Sulfo Blue; Mordant Blue 45; C.I. 58605; 1,2-Dihydroxy-3-[(4-sulfophenyl)azo]anthraquinone; 9,10-Dihydro-3,4-dihydroxy-9,10-dioxo-1-anthracenesulfonic acid phenylhydrazone
EINECS	Contact for details

Quality Control

Our Alizarin Blue S is produced under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including identification (IR), assay (HPLC), and impurity profiling, to meet the stringent requirements of analytical and industrial applications. Certificates of Analysis (COA) documenting all specifications are provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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	Dark blue to violet powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Solubility (in Water)	Freely soluble, clear solution

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