6406-21-9 Usage
Uses
Used in Dye and Pigment Synthesis:
2-Amino-3,5-dichlorobenzenesulfonic acid is used as an intermediate in the synthesis of dyes and pigments, particularly for the production of azo dyes. These dyes are widely used in the textile and paper industries due to their colorfast properties and ability to produce a broad spectrum of colors.
Used as a pH Indicator:
2-Amino-3,5-dichlorobenzenesulfonic acid is used as a pH indicator, leveraging its ability to change color in response to different pH levels. This property makes it useful in various applications where pH monitoring is required.
Used in Analytical Chemistry:
As a reagent in analytical chemistry, 2-Amino-3,5-dichlorobenzenesulfonic acid aids in the identification and quantification of various substances. Its reactivity and solubility properties contribute to its effectiveness in laboratory settings for analytical purposes.
Check Digit Verification of cas no
The CAS Registry Mumber 6406-21-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,0 and 6 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 6406-21:
(6*6)+(5*4)+(4*0)+(3*6)+(2*2)+(1*1)=79
79 % 10 = 9
So 6406-21-9 is a valid CAS Registry Number.
6406-21-9Relevant academic research and scientific papers
AZO COMPOUND, INK COMPOSITION, RECORDING METHOD AND COLORED MATTER
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Paragraph 0123-0124, (2017/04/14)
PROBLEM TO BE SOLVED: To provide a dye having a high-quality black hue with excellent ozone resistance, light resistance, humidity resistance and the like. SOLUTION: The present invention provides an azo compound represented by formula (1) or a tautomer thereof, or a salt thereof (R1 is a (C1-C4) alkyl group or the like; R2 is a cyano group; R3 and R4 are H, a sulfo group or the like; R5 and R7 are a (C1-C4) alkylthio group or the like; R6 and R8 is a (C1-C4) alkylcarbonyl amino group; R9 is a sulfo (C1-C4) alkoxy group; R10 is a methyl group; R11-R13 are H, a sulfo group, a halogen atom; and at least two of R11-R13 are a halogen atom). SELECTED DRAWING: None COPYRIGHT: (C)2016,JPOandINPIT
