Description

Reactive Orange 1 is a synthetic, water-soluble azo dye belonging to the reactive dye class, primarily used for coloring cellulosic fibers. Its core value proposition lies in its ability to form a covalent bond with the fiber substrate, resulting in excellent wash and light fastness properties. This product is essential for manufacturers in the textile industry seeking vibrant and durable orange to red-orange hues on cotton, viscose, and other natural fibers.

Application

• Textile Dyeing: Primary application for exhaust and continuous dyeing of cotton, linen, hemp, and other cellulosic fibers.
• Fabric Printing: Used in printing pastes for creating sharp, colorfast patterns on cellulosic fabrics.
• Viscose Rayon Coloration: Effective dye for achieving bright shades on regenerated cellulose fibers like viscose and lyocell.
• Leather Processing: Employed in the dyeing of leather goods where good fastness properties are required.
• Paper Coloration: Suitable for specialty paper dyeing applications requiring specific color shades.
• Research & Development: Serves as a reference standard or intermediate in chemical research and dye synthesis studies.

Basic Information

Product Name	Reactive Orange 1
CAS No.	6522-74-3
Molecular Formula	C20H17N4Na2O10S3
Molecular Weight	637.54 g/mol
Synonyms	Reactive Orange 1; Reactive Orange X-GN; C.I. Reactive Orange 1; Reactive Brilliant Orange X-GN; 2,7-Naphthalenedisulfonic acid, 4-[[4-[(2-amino-4-sulfophenyl)azo]-6-sulfo-1-naphthalenyl]azo]-5-hydroxy-, sodium salt (1:2); 4-[[4-[(2-Amino-4-sulfophenyl)azo]-6-sulfo-1-naphthyl]azo]-5-hydroxy-2,7-naphthalenedisulfonic acid disodium salt; Reactive Orange I; Lanasol Orange R
EINECS	229-426-5

Quality Control

Our Reactive Orange 1 is manufactured under strict process controls to ensure batch-to-batch consistency and high performance. Quality is verified through comprehensive testing including color strength, shade, solubility, and reactive group content. A Certificate of Analysis (COA) detailing purity, physical properties, and application performance is provided with every shipment to guarantee it meets your specific dyeing 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 and incompatible materials. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	Orange to Red-Orange Powder
Color Strength	≥ 98% (Standard)
Moisture Content	≤ 5.0%
Water Solubility	≥ 50 g/L (at 50°C)
pH (1% Solution)	6.0 - 8.0
Dusting	Low
Identification (IR)	Conforms to Standard
Heavy Metals (as Pb)	≤ 50 ppm

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