Description

Acid Red 252 is a synthetic, water-soluble azo dye belonging to the acid dye class, known for its bright red color and good fastness properties. This high-performance dye is valued for its strong affinity to polyamide fibers like nylon and wool, providing excellent color yield and wash fastness. It is primarily used by manufacturers in the textile industry for dyeing and printing, as well as in the production of inks, leather, and paper where a vibrant red hue is required.

Application

• Textile Dyeing: Primary application for dyeing polyamide fibers (nylon), wool, and silk, offering brilliant red shades.
• Leather Coloring: Used in the dyeing of leather goods to achieve consistent and vibrant red colors.
• Ink Manufacturing: A key colorant for the formulation of inks, including those for writing instruments and specialty printing.
• Paper Staining: Employed in the paper industry for surface coloring and the production of colored paper products.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.

Basic Information

Product Name	Acid Red 252
CAS No.	61724-40-1
Molecular Formula	C22H14N4Na2O7S2
Molecular Weight	556.48 g/mol
Synonyms	Acid Red 252; C.I. Acid Red 252; Acid Leather Red G; Nylosan Red F-3GL; Lanasyn Red F-3GL; Telon Red F3GL; Acid Fast Red A; 2,7-Naphthalenedisulfonic acid, 5-[(2,4-dinitrophenyl)azo]-4-hydroxy-3-[(4-methylphenyl)azo]-, disodium salt
EINECS	262-966-8

Quality Control

Our Acid Red 252 is manufactured under a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including spectrophotometric analysis for strength and shade, and chromatography for impurity profiling. A Certificate of Analysis (COA) detailing purity, physical properties, and conformance to specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Red to dark red powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Water Solubility	Freely soluble
Shade & Strength	Match to reference standard (± 5%)
pH (1% Solution)	6.0 - 8.0

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