Description

1,2,5,8-Tetrahydroxyanthraquinone is a polyhydroxy derivative of anthraquinone, serving as a versatile intermediate and functional dye precursor. Its value lies in its ability to act as a chelating agent and chromophore, making it essential for producing vivid colors and specialized chemical effects. This compound is primarily needed by manufacturers in the dye and pigment, analytical chemistry, and specialty chemical synthesis industries.

Application

• Dye and Pigment Intermediate: A key precursor for the synthesis of vat dyes, acid dyes, and solvent dyes, particularly for shades of blue, green, and violet.
• Chelating Agent: Used in analytical chemistry and metal extraction processes due to its ability to form stable complexes with various metal ions.
• Research & Development: Serves as a building block in organic synthesis for pharmaceuticals and advanced materials research.
• Photographic Sensitizer: Employed in specialized photographic and imaging applications.
• pH Indicator: Can be utilized as a component in pH-sensitive indicators for laboratory use.
• Textile Auxiliary: Functions in specific textile processing and finishing applications.

Basic Information

Product Name	1,2,5,8-Tetrahydroxyanthraquinone
CAS No.	81-61-8
Molecular Formula	C14H8O6
Molecular Weight	272.21 g/mol
Synonyms	Quinizarin Green SS; 1,2,5,8-Tetrahydroxy-9,10-anthracenedione; 1,2,5,8-THAQ; C.I. 59050; C.I. Solvent Green 3; D&C Green No. 6; Alizarin Green G; Anthraquinone Green G; Tetrahydroxyanthraquinone
EINECS	201-357-5

Quality Control

Our 1,2,5,8-Tetrahydroxyanthraquinone is produced under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot is tested against comprehensive specifications, including identity, assay, and impurity profiles. Certificates of Analysis (COA) documenting these results are provided and available upon request to support your quality assurance protocols.

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. The product is light-sensitive and should be stored away from light.

Specification

Item	Specification
Appearance	Dark green to brownish-green powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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