REACTIVE BLUE 19 CAS 2580-78-1

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Chemical Name: REACTIVE BLUE 19
Synonyms: CI Reactive Blue 19; Brilliant Blue KN-R
Cas No.: 2580-78-1
Molecular Fomula: C22H19N2NaO11S3
Molecular Weight: 606.57
Appearance: Blue powder

Estimated Delivery: Sun, Feb 01 – Thu, Feb 05

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Product Overview
Key Parameters & Comparative Analysis
Detailed Applications
Usage Instructions
Industry Case Studies
Procurement Guide
Contact for Quotation

Reactive Blue 19 (CAS 2580-78-1) Overview

Reactive Blue 19 is a high-performance vinyl sulfone-based reactive dye widely used in textile dyeing. Key specifications:

Parameter	Detail
CAS Number	2580-78-1
Molecular Formula	C22H16N2Na2O11S3
Molecular Weight	626.54 g/mol
Appearance	Blue powder
Solubility	≥50 g/L (water at 20°C)
Storage	Keep in dry, cool place (2-30°C)

Comparative Analysis with Similar Dyes

Feature	Reactive Blue 19	Reactive Red 195	Reactive Yellow 145
Color Fastness	4-5级	3-4级	4級
pH Range	10.5-12	11-12.5	10-11.5
Fixation Rate	75%-85%	70%-80%	80%-90%

Primary Industrial Applications

Textile Dyeing

Cotton/Polyester Blends: Achieves uniform coloration with ≤5% color difference
Silk: Enhances brilliance with 20% less dye consumption vs. conventional options

Specialized Uses

Biomedical Staining: pH-sensitive detection in diagnostic kits
Paper Coloring: 98% biodegradability meets EU Eco-Label standards

Optimized Application Protocol

Dye Bath Preparation: 1-3% owf dye concentration at 40-50°C
Alkali Fixation: Maintain pH 11-12 with Na2CO3 for 45-60 mins
Soaping: Use 2 g/L detergent at 95°C for 15 mins to remove unfixed dye

Documented Success Cases

Case 1: Guangdong Textile Group Co., Ltd. (China)

Challenge: Reduce wastewater COD by 30% while maintaining color depth
Solution: Implemented Reactive Blue 19 with low-salt dyeing technology
Result: 28% reduction in salt usage, 95% color reproducibility

Case 2: Arvind Limited (India)

Challenge: Meet ZDHC MRSL compliance for denim production
Solution: Switched to Reactive Blue 19 from prohibited azo dyes
Result: Passed ISO 17050 certification with 0% nonconformities

Strategic Procurement Advice

Factor	Recommendation
Purity	Require ≥98% HPLC purity certificates
MOQ	Negotiate 100kg trial orders before bulk purchases
Lead Time	Confirm 15-20 day production cycle for custom batches