Description

2-(2,4,5,7-Tetrabromo-3,6-Dihydroxyxanthen-9-Yl)Benzoic Acid, Aluminium Salt is a high-purity, organometallic complex salt derived from a halogenated xanthene dye. This compound is valued for its intense color properties and stability, making it a critical functional pigment and intermediate. It is primarily sought by manufacturers in the plastics, coatings, and specialty ink industries for demanding applications requiring consistent chromatic performance.

Application

• Pigment for Engineering Plastics and Polymers: Imparts vibrant, heat-stable coloration to polycarbonate, ABS, nylon, and other high-performance resins.
• Industrial Coatings and Paints: Used in formulations for automotive, coil, and powder coatings where lightfastness and chemical resistance are paramount.
• Specialty Printing Inks: A key component in high-quality inks for security printing, packaging, and decorative applications.
• Masterbatch Production: Serves as a concentrated colorant for creating standardized, easy-to-disperse pigment preparations.
• Coloration of Synthetic Fibers: Employed in the dyeing and mass coloration of synthetic textiles to achieve deep, uniform shades.
• Research & Development: Used as a reference standard and intermediate in the synthesis of novel dyes and functional materials.

Basic Information

Product Name	2-(2,4,5,7-Tetrabromo-3,6-Dihydroxyxanthen-9-Yl)Benzoic Acid, Aluminium Salt
CAS No.	16508-80-8
Molecular Formula	C20H7AlBr4O5
Molecular Weight	683.79 g/mol
Synonyms	Aluminium Salt of Solvent Red 49; C.I. Pigment Red 90:1; Tetrabromofluorescein Aluminum Lake; Aluminium 2-(2,4,5,7-tetrabromo-3,6-dihydroxyxanthen-9-yl)benzoate; Eosin Aluminium Lake; D&C Red No. 22 Aluminum Lake; Acid Red 87 Aluminum Lake; 2',4',5',7'-Tetrabromo-3,6-dihydroxy-spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, aluminum complex
EINECS	240-548-8

Quality Control

Our production of 2-(2,4,5,7-Tetrabromo-3,6-Dihydroxyxanthen-9-Yl)Benzoic Acid, Aluminium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing to ensure consistent purity, color strength, and physical properties. We provide full traceability and a detailed Certificate of Analysis (COA) with each shipment, confirming compliance with agreed specifications.

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	Red powder
Identification (IR)	Conforms to standard
Assay (Aluminium Salt)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	15.0% - 20.0%
Heavy Metals (as Pb)	≤ 20 ppm
Arsenic (As)	≤ 3 ppm
Solvent Residues	Meets ICH guidelines

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