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17668-87-0

(4-Hydroxy-phenyl)-diazenesulfonic acid, also known as sulfanilic acid, is an organic compound with the chemical formula C6H7NO4S. It is a white crystalline solid that is soluble in water and slightly soluble in ethanol. (4-hydroxy-phenyl)-diazenesulfonic acid is an important intermediate in the synthesis of various dyes, pharmaceuticals, and other chemical products. Sulfanilic acid is derived from aniline through a diazotization reaction, where the amino group is replaced by a diazonium group, followed by hydrolysis to form the sulfonic acid. It is widely used in the production of azo dyes, sulfa drugs, and other chemical compounds, making it a significant player in the chemical industry.

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  • 17668-87-0 Structure

  • Basic information

    1. Product Name: (4-hydroxy-phenyl)-diazenesulfonic acid
    2. Synonyms:
    3. CAS NO:17668-87-0
    4. Molecular Formula:
    5. Molecular Weight: 202.191
    6. EINECS: N/A
    7. Product Categories: N/A
    8. Mol File: 17668-87-0.mol
    9. Article Data: 0

  • 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: (4-hydroxy-phenyl)-diazenesulfonic acid(CAS DataBase Reference)
    10. NIST Chemistry Reference: (4-hydroxy-phenyl)-diazenesulfonic acid(17668-87-0)
    11. EPA Substance Registry System: (4-hydroxy-phenyl)-diazenesulfonic acid(17668-87-0)

  • 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: 17668-87-0(Hazardous Substances Data)

17668-87-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 17668-87-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,6,6 and 8 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 17668-87:
(7*1)+(6*7)+(5*6)+(4*6)+(3*8)+(2*8)+(1*7)=150
150 % 10 = 0
So 17668-87-0 is a valid CAS Registry Number.

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