Description

Acidbrown294 CAS NO 12219-73-7 is a high-performance acid dye belonging to the azo chemical class, valued for its strong affinity to protein fibers like wool and silk. Its primary commercial value lies in delivering consistent, vibrant brown shades with excellent leveling properties and good wet fastness. This product is essential for manufacturers in the textile, leather, and specialty paper industries seeking reliable and cost-effective coloration solutions.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and nylon fibers to achieve durable brown hues.
• Leather Finishing: Used in the coloration of leather goods, providing rich and uniform brown tones.
• Paper Staining: Employed for tinting specialty papers, including decorative and packaging materials.
• Biomaterial Staining: Potential use in laboratory settings for histological staining of biological tissues.
• Ink Formulation: A colorant component in the manufacture of certain industrial inks.

Basic Information

Product Name	Acidbrown294
CAS No.	12219-73-7
Molecular Formula	C32H24N8Na2O8S2
Molecular Weight	750.69 g/mol
Synonyms	Acid Brown 294; C.I. Acid Brown 294; Acid Leather Brown 2GL; Acidol Brown M-BL; Amido Brown M-BL; Derma Brown GL; Lanasyn Brown S-BL; Supranol Brown BL; Telon Brown A-BL; Tectilon Brown 2R
EINECS	Contact for details

Quality Control

Our Acidbrown294 is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including identification, purity assay, and strength evaluation, to ensure it meets precise coloristic and chemical specifications. A Certificate of Analysis (COA) documenting these results is provided with each shipment to guarantee traceability and compliance with customer 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 strong oxidizing agents.

Specification

Item	Specification
Appearance	Brown powder or granules
Identification (IR)	Conforms to standard
Assay (Color Strength)	≥ 98%
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 1.0%
Shade	Conforms to standard
Solubility	Soluble in water

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