Description

1,3-Dihydroxy-2-methylanthraquinone is a high-purity anthraquinone derivative, also known as Quinizarin Green SS. This compound is valued for its role as a key intermediate and colorant, offering excellent lightfastness and chemical stability. It is primarily utilized in the production of dyes and pigments for industrial applications, as well as in advanced material science research. Our supply ensures consistent quality and reliable availability for global manufacturing and R&D needs.

Application

• Dye and Pigment Intermediate: A crucial precursor for synthesizing vat dyes, disperse dyes, and solvent dyes, particularly for coloring polyester, nylon, and acetate fibers.
• Industrial Colorants: Used in the manufacture of pigments for plastics, inks, and coatings, where color stability is required.
• Research & Development: Serves as a building block in organic synthesis and material science for developing novel functional dyes and photonic materials.
• Analytical Chemistry: Can be employed as a reagent or standard in chromatographic analysis and quality control laboratories.
• Specialty Chemicals: Potential applications in the synthesis of electrochromic materials or as a sensitizer in certain photochemical processes.

Basic Information

Product Name	1,3-Dihydroxy-2-methylanthraquinone
CAS No.	117-02-2
Molecular Formula	C15H10O4
Molecular Weight	254.24 g/mol
Synonyms	Quinizarin Green SS; 2-Methyl-1,3-dihydroxyanthraquinone; 1,3-Dihydroxy-2-methyl-9,10-anthracenedione; CI 61565; Solvent Green 3; D&C Green No. 6; Alizarin Bordeaux; 2-Methylquinizarin
EINECS	204-167-2

Quality Control

Our 1,3-Dihydroxy-2-methylanthraquinone is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and composition. We provide Certificates of Analysis (COA) with every shipment, detailing key parameters such as assay, melting point, and impurity profiles. Our quality commitment ensures material consistency for your critical industrial and research applications.

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 and heat sources. For long-term storage, consider an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	Green to dark green crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	195°C - 205°C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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