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Direct Blue 71

Price 500 INR/ Kilograms

Get a Price/Quote

MOQ : 1000 Kilogram Per day Kilograms

Direct Blue 71 Specification

Strength
Good color yield

Resistance
Moderate to alkali

Grade
Industrial Grade

Poisonous
YES

Melting Point
No definite melting, decomposes

Shelf Life
2 years

Application
Dyeing cotton, paper, silk, leather

Density
0.45 Gram per cubic centimeter(g/cm3)

Rubbing Resistance
Medium

Purity
99%

Solubility
Soluble in water

Molecular Formula
C34H24N6Na4O16S4

Size
Customized

HS Code
32041400

Other Names
Blue Direct Dye, Benzidine Blue

Water Resistance
Medium

Smell
Odorless

Ph Level
7-8 (1% solution)

Moisture (%)
Max 1.5%

Shape
Powder

Solvent Color
Blue

Structural Formula
Available upon request

CAS No
34140-57-1

Type
Direct Dye

Usage
Dyeing

EINECS No
251-832-4

Physical Form
Powder

Storage
Store in cool, dry place

Packing
25 kg HDPE bags

Light Fastness
3-4 (Good for direct dyes)

Safety Measures
Use gloves and mask during handling

Compatibility
Suitable for cellulosic fibers

Manufacturing Standard
ISO 9001 Certified

Appearance
Bright blue powder

Lead Content
Below detectable limits

About Direct Blue 71

Direct Blue 71 Dyes belong to the category of Dyes having CAS number 4399-55-7. The synonym of Direct Blue 71 Dyes is Direct Fast Blue B2RL, Direct Navy BlueL-3RB, Direct Fast Blue B2R,Sirius Blue S-BRR, Direct Fast Blue 2RL, Solophenyl Blue GL. The molecular weight of Direct Blue 71 Dyes is 1029.87 g/mol and the molecular formula is C40H23N7Na4O13S4. The colour index number is 34140. The physical appearance of Direct Blue 71 Dyes is Blue Gray.

Versatile Application Across Industries

Direct Blue 71 caters to diverse industries such as textiles, leather, and paper. Its compatibility with cellulosic fibers makes it a preferred choice for cotton dyeing, as well as coloring silk and leather products. Thanks to its moderate resistance to alkalis and medium water and rubbing resistance, this dye ensures reliable performance in various manufacturing settings.

Safety and Quality Assurance

Manufactured under ISO 9001 certification, Direct Blue 71 is produced with stringent quality controls. Although it exhibits negligible lead content, safety measures such as using gloves and a mask during handling are recommended due to its poisonous nature. The product's purity (99%) and moisture content (max 1.5%) make it a dependable option for industrial processes.

FAQ's of Direct Blue 71:

Q: How should Direct Blue 71 be safely handled and stored?

A: Direct Blue 71 should be handled using protective gloves and a mask, as it is classified as poisonous. For storage, keep the product in its original 25 kg HDPE bags in a cool, dry place to maintain its effectiveness and ensure a shelf life of up to two years.

Q: What types of materials are most compatible with Direct Blue 71?

A: Direct Blue 71 is ideally suited for cellulosic fibers, making it excellent for dyeing cotton, as well as other materials such as silk, paper, and leather. Its solubility in water and strong color yield make it a versatile choice for multiple dyeing applications.

Q: When is Direct Blue 71 preferred over other dyes in industrial applications?

A: This dye is often chosen when reliable color consistency, moderate alkali resistance, and good light fastness (3-4) are desired. Its high purity and compliance with quality standards make it suitable for both small- and large-scale industrial dyeing operations.

Q: Where is Direct Blue 71 commonly used?

A: Direct Blue 71 is widely used in the textile industry for dyeing cotton fabrics, in the paper sector for coloration, and in leather processing. It is supplied by exporters, manufacturers, importers, and suppliers throughout India, serving both domestic and international markets.

Q: What is the process for using Direct Blue 71 in dyeing applications?

A: To use Direct Blue 71, dissolve the powder in water (pH 7-8 for a 1% solution), then proceed with the standard dyeing process suitable for the chosen substrate (cotton, paper, silk, or leather). Ensure all safety measures are followed during preparation and handling.

Q: What are the key benefits of choosing Direct Blue 71?

A: The dye offers a bright, stable blue coloration with good color yield, moderate resistance to alkalis, and medium fastness to water and rubbing. It is manufactured according to ISO 9001 standards and contains lead below detectable limits, making it a reliable and safe industrial solution.

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