7-hydroxy-8-azophenyl-naphthalene-1-sulfonic acid is a complex organic compound with the molecular formula C16H11N2O4S. It is characterized by the presence of a hydroxyl group (-OH) at the 7th position, an azo group (-N=N-) at the 8th position, and a sulfonic acid group (-SO3H) at the 1st position of the naphthalene ring. 7-hydroxy-8-azophenyl-naphthalene-1-sulfonic acid is known for its ability to form azo dyes, which are widely used in the textile, paper, and leather industries due to their vibrant colors and resistance to fading. The sulfonic acid group provides water solubility, which is essential for the dyeing process, while the azo linkage contributes to the stability and color properties of the dye. The compound's structure and properties make it a significant player in the realm of synthetic colorants.

4834-95-1

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Basic information
1. Product Name: 7-hydroxy-8-azophenyl-naphthalene-1-sulfonic acid
2. Synonyms:
3. CAS NO:4834-95-1
4. Molecular Formula:
5. Molecular Weight: 328.348
6. EINECS: N/A
7. Product Categories: N/A
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: N/A
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: 7-hydroxy-8-azophenyl-naphthalene-1-sulfonic acid(CAS DataBase Reference)
10. NIST Chemistry Reference: 7-hydroxy-8-azophenyl-naphthalene-1-sulfonic acid(4834-95-1)
11. EPA Substance Registry System: 7-hydroxy-8-azophenyl-naphthalene-1-sulfonic acid(4834-95-1)
Safety Data
1. Hazard Codes: N/A
2. Statements: N/A
3. Safety Statements: N/A
4. WGK Germany:
5. RTECS:
6. HazardClass: N/A
7. PackingGroup: N/A
8. Hazardous Substances Data: 4834-95-1(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 4834-95-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,8,3 and 4 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 4834-95:
(6*4)+(5*8)+(4*3)+(3*4)+(2*9)+(1*5)=111
111 % 10 = 1
So 4834-95-1 is a valid CAS Registry Number.

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