Description

C.I. Reactive Blue 140 is a high-performance, bifunctional reactive dye belonging to the vinyl sulfone and monochlorotriazine class, offering excellent wash and light fastness properties. Its primary value lies in providing brilliant and durable blue shades on cellulosic fibers like cotton and viscose, with high fixation rates and good reproducibility. This dye is essential for textile manufacturers and dye houses engaged in exhaust, pad-batch, and continuous dyeing processes, as well as for the production of inks and specialty colorants.

Application

• Exhaust Dyeing of Cotton: For dyeing yarn, knits, and woven fabrics in jet, overflow, and beam dyeing machines.
• Continuous and Pad-Batch Dyeing: Suitable for pad-steam and pad-dry-chemical pad-steam processes for efficient, large-scale fabric production.
• Viscose and Linen Coloration: Provides vibrant and even shades on other cellulosic substrates.
• Dyeing of Blends: Used in combination with appropriate dyes for coloring cotton/polyester or other blended fabrics.
• Textile Printing: Formulated into printing pastes for direct and discharge printing on cellulose.
• Ink Manufacturing: Serves as a colorant for specialty inks where reactive properties are required.

Basic Information

Product Name	C.I. Reactive Blue 140
CAS No.	71872-74-7
Molecular Formula	C29H20ClN7O11S3
Molecular Weight	782.16 g/mol
Synonyms	Reactive Blue 140; Reactive Blue KN-R; C.I. 61211; Remazol Brilliant Blue R; Levafix Blue CA; Procion Blue H-ERD; Sumifix Supra Brilliant Blue BRF; Vinylsulfone Blue Dye
EINECS	Contact for details

Quality Control

Our production of C.I. Reactive Blue 140 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) documenting purity, physical properties, and application test results are available upon request to support your quality assurance and production planning.

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) and light-sensitive; containers must be kept tightly sealed after opening to prevent moisture absorption and degradation.

Specification

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

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