3270-25-5 Usage
Description
Acid chrome blue K is a red light navy blue dye that is soluble in water and ethanol. It exhibits unique color changes when exposed to different acids, turning purple in concentrated sulfuric acid and blue light pink upon dilution, and dark orange to yellow brown in concentrated nitric acid. Its aqueous solution turns yellow when reacted with sodium hydroxide.
Uses
Used in Textile Industry:
Acid chrome blue K is used as a dye for coloring textiles. It is valued for its ability to produce a vibrant navy blue color and its compatibility with various textile materials.
Used in Analytical Chemistry:
Acid chrome blue K serves as an indicator in acid-base titrations, where it changes color in response to pH changes, aiding in the determination of the endpoint of the titration.
Used in Leather Industry:
In the leather industry, Acid chrome blue K is used as a dye to impart color to leather products, offering a consistent and long-lasting coloration.
Standard:
Acid chrome blue K meets various industry standards for performance, including:
Ironing Fastness: ISO 4-5
Light Fastness: 5
Fulling: 5
Perspiration Fastness: 2-3
Soaping: 4-5
Water: 5
Alkali: 5
Acid: 5
These standards ensure that the dye maintains its color and quality under various conditions, such as exposure to heat, light, water, and chemicals.
Preparation
3-Amino-4-hydroxybenzenesulfonic acid diazotization, and 4,5-Dihydroxynaphthalene-2,7-disulfonic acid coupling.
Standard
Ironing Fastness
Alkali
Acid
ISO
4-5
Check Digit Verification of cas no
The CAS Registry Mumber 3270-25-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,2,7 and 0 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 3270-25:
(6*3)+(5*2)+(4*7)+(3*0)+(2*2)+(1*5)=65
65 % 10 = 5
So 3270-25-5 is a valid CAS Registry Number.
