Description

1,3-Benzenediol, 5,5'-[Oxybis[(5-Hydroxy-3,1-Phenylene)Oxy]]Bis-, Coupled With Diazotized 3,3'-Dimethoxy[1,1'-Biphenyl]-4,4'-Diamine, Sodium Salt is a high-purity, synthetic organic colorant belonging to the class of azo dyes. This compound is valued for its excellent color strength, stability, and compatibility in demanding industrial formulations. It is primarily utilized by manufacturers in the inks, coatings, plastics, and specialty textiles industries seeking consistent and reliable pigmentation.

Application

• Industrial Ink Formulation: Used as a key pigment for printing inks, including packaging, security, and specialty printing applications.
• Polymer and Plastic Coloring: Imparts color to a variety of plastic resins and synthetic polymers during masterbatch production.
• Coatings and Paints: Serves as a colorant in industrial and decorative coatings requiring specific hue and lightfastness properties.
• Textile Dyeing and Printing: Applied in the coloration of synthetic fibers and specialty fabrics.
• Paper and Specialty Paper Products: Used in the manufacturing of colored papers and paper-based products.
• Research & Development: Serves as a chemical intermediate or reference standard in analytical and synthetic chemistry laboratories.

Basic Information

Product Name	1,3-Benzenediol, 5,5'-[Oxybis[(5-Hydroxy-3,1-Phenylene)Oxy]]Bis-, Coupled With Diazotized 3,3'-Dimethoxy[1,1'-Biphenyl]-4,4'-Diamine, Sodium Salt
CAS No.	98072-77-6
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Pigment Brown 29; 5,5'-[Oxybis[(5-hydroxy-3,1-phenylene)oxy]]bis[1,3-benzenediol], coupled with diazotized 3,3'-dimethoxy[1,1'-biphenyl]-4,4'-diamine, sodium salt; Azo Condensation Pigment Brown 29; Pigment Brown 29 (C.I. 71129); Condensation Azo Brown; Sodium salt of a diazo compound
EINECS	Contact for details

Quality Control

Our production of this azo pigment adheres to strict quality control protocols to ensure batch-to-batch consistency and performance. Quality is verified through analytical methods including chromatography and spectrophotometry. A Certificate of Analysis (COA) detailing purity, color strength, and impurity profiles is provided with each shipment to support your quality assurance requirements.

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	Fine Powder
Color	Brown
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Ash Content	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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