Description

C.I. Reactive Blue 70 is a high-performance, water-soluble reactive dye belonging to the anthraquinone class, widely recognized for its brilliant blue hue and excellent fastness properties. Its primary value lies in its ability to form a strong covalent bond with cellulosic fibers, ensuring exceptional wash and light fastness in the final textile product. This dye is essential for manufacturers in the textile industry, particularly for dyeing and printing cotton, viscose, and other natural fibers, where consistent color yield and durability are critical.

Application

• Exhaust dyeing of cotton and other cellulosic fibers in jet, overflow, and beam dyeing machines.
• Continuous dyeing processes for woven and knitted cotton fabrics.
• Textile printing applications, including screen and rotary printing, for sharp and vibrant designs.
• Garment dyeing for consistent and uniform coloration of finished apparel.
• Dyeing of viscose (rayon) and linen to achieve deep and level shades.
• Used in combination with other reactive dyes to produce a wide spectrum of compound shades.

Basic Information

Product Name	C.I. Reactive Blue 70
CAS No.	61968-92-1
Molecular Formula	C29H19ClN7O11S3·xNa
Molecular Weight	Contact for details
Synonyms	Reactive Blue 70; Reactive Blue H-EGN; C.I. 61205; Remazol Brilliant Blue BB; Levafix Blue CA; Procion Blue H-EGN; Drimarene Blue K-2B; Anthraquinone Blue Reactive Dye
EINECS	Contact for details

Quality Control

Our production of C.I. Reactive Blue 70 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Every lot is tested against key parameters including color strength, shade, solubility, and fixation properties. Certificates of Analysis (COA) detailing purity, physical properties, and application test results are available upon request to support your quality assurance processes.

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). This product is hygroscopic (moisture-sensitive); the original container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Blue powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (Standard)
Shade	Conforms to standard
Solubility in Water	≥ 100 g/L (at 50°C)
Moisture Content	≤ 5.0%
pH (1% Solution)	5.5 - 7.5
Fixation Rate	≥ 70%

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