Description

C.I. Reactive Blue 38 is a high-performance, water-soluble reactive dye belonging to the anthraquinone class. This compound is essential for achieving vibrant, wash-fast blue colorations on cellulosic fibers like cotton and viscose. It is a critical raw material for textile manufacturers, dye producers, and industrial colorant formulators seeking reliable and consistent blue shades. The product is supplied as a high-purity powder to ensure optimal performance in demanding dyeing processes.

Application

• Textile Dyeing: Primary application for exhaust, pad-batch, and continuous dyeing of cotton, linen, and other cellulosic fabrics.
• Viscose Rayon Coloration: Used to dye viscose fibers and filaments, providing excellent brightness and fastness properties.
• Industrial Colorant Production: Serves as a key intermediate for manufacturing liquid or powdered dye formulations and pigment preparations.
• Leather Dyeing: Applied for coloring leather goods, offering good penetration and color uniformity.
• Paper Coloring: Suitable for specialty paper grades requiring specific color fastness.
• Research & Development: Used in laboratories for developing new dyeing techniques, color matching, and quality control standards.

Basic Information

Product Name	C.I. Reactive Blue 38
CAS No.	12236-90-7
Molecular Formula	C23H14Cl2N6O8S2
Molecular Weight	637.42 g/mol
Synonyms	Reactive Blue 38; Reactive Blue K-GL; C.I. 61211; Remazol Brilliant Blue R; Levafix Brilliant Blue E-BRA; Procion Blue H-ERD; Drimarene Brilliant Blue K-2RL; Anthraquinone blue reactive dye; 1-Amino-4-[[3-[(4,6-dichloro-1,3,5-triazin-2-yl)amino]-4-sulfophenyl]amino]-9,10-dihydro-9,10-dioxo-2-anthracenesulfonic acid disodium salt
EINECS	Contact for details

Quality Control

Our C.I. Reactive Blue 38 is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for color strength, hue, and reactive group content. A Certificate of Analysis (COA) detailing purity, solubility, and fastness properties is provided with each shipment to guarantee consistency and performance for your application.

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. The product is light-sensitive (store away from light) and hygroscopic (moisture-sensitive); prolonged exposure to air and humidity should be avoided to maintain stability and performance.

Specification

Item	Specification
Appearance	Blue to dark blue powder
Color Strength	≥ 98% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	≥ 50 g/L (at 50°C)
pH (1% Solution)	6.0 - 8.0
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 90.0%
Fastness Properties	Wash Fastness: ≥ 4; Light Fastness: ≥ 5

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