110735-25-6 Usage
Description
Direct Blue 151 is a blue-black powder that exhibits red fluorescence under ultraviolet light. It is soluble in water, producing a blue-purple or purple solution, and moderately soluble in ethanol, resulting in a red light purple solution. The dye solution turns blue or green in the presence of strong sulfuric acid, and upon dilution, it turns purple. When the dye solution is mixed with strong hydrochloric acid, it turns purple and forms a precipitate. The addition of a concentrated sodium hydroxide solution results in a red wine color. Direct Blue 151 has excellent dye uptake and affinity for cellulose fibers, with the highest affinity at a temperature of 100°C. It also has good discharge properties.
Uses
Used in Textile Industry:
Direct Blue 151 is used as a dye for cotton, linen, rayon, and other cellulose fibers. It is also used for dyeing rayon/brocade fabrics. The dye has good light fastness, acid resistance, and alkali resistance, making it suitable for various dyeing processes.
Used in Leather Industry:
Direct Blue 151 is used for coloring leather, providing a vibrant blue color and good resistance to fading and staining.
Used in Paper Pulp Industry:
Direct Blue 151 is used for coloring paper pulp, offering a consistent blue hue and good resistance to water and fading.
Standard:
The standard for Direct Blue 151 includes the following properties:
Acid Resistance: ISO 4-5, AATCC 3-4
Alkali Resistance: ISO 4-5, AATCC 4
Light Fastness: ISO 1-2, AATCC 2
Soaping: ISO 2, AATCC 2
Water: ISO 2-3, AATCC 3
These standards ensure the quality and performance of Direct Blue 151 in various applications.
Preparation
3,3′-Dimethoxylbenzidine double nitriding, first and 4-Hydroxynaphthalene-1-sulfonic acid conditions and 7-Amino-4-hydroxynaphthalene-2-sulfonic acid coupling.
Standard
Acid Resistance
Fading
Stain
ISO
4-5
AATCC
3-4
Check Digit Verification of cas no
The CAS Registry Mumber 110735-25-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,0,7,3 and 5 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 110735-25:
(8*1)+(7*1)+(6*0)+(5*7)+(4*3)+(3*5)+(2*2)+(1*5)=86
86 % 10 = 6
So 110735-25-6 is a valid CAS Registry Number.
