Description

C.I.Acid Red 302 is a high-purity synthetic dye belonging to the acid dye class, identified by CAS No. 12216-99-8. It is valued for its strong color strength, good lightfastness, and excellent solubility in aqueous systems, providing reliable and consistent coloration. This product is essential for manufacturers in the textile, leather, and paper industries seeking vibrant red shades with good wash fastness properties.

Application

• Textile Dyeing: Primary application for dyeing protein fibers like wool, silk, and nylon to achieve bright red hues.
• Leather Finishing: Used in the coloration of leather goods, offering good penetration and uniform color.
• Paper Coloring: Employed in the production of specialty papers, including decorative and packaging papers.
• Ink Formulation: A colorant component in certain types of inks, particularly for non-impact printing.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Wood Staining: Can be used to impart color to wood and wood-based products.

Basic Information

Product Name	C.I.Acid Red 302
CAS No.	12216-99-8
Molecular Formula	C22H14N4Na2O7S2
Molecular Weight	556.48 g/mol
Synonyms	Acid Red 302; C.I. 18130; Acid Leather Red BG; Nylosan Red F-3GL; Telon Red K-3B; Erionyl Red 3G; Acid Fast Red A; Supranol Fast Red 3GW
EINECS	Contact for details

Quality Control

Our C.I.Acid Red 302 is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise colorimetric and chemical specifications, including strength, shade, and solubility. Certificates of Analysis (COA) documenting purity, heavy metal content, and other critical parameters are available upon request.

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	Reddish-brown powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content	≤ 1.0%

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