(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.
17668-87-0
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Basic information
- Product Name: (4-hydroxy-phenyl)-diazenesulfonic acid
- Synonyms:
- CAS NO:17668-87-0
- Molecular Formula:
- Molecular Weight: 202.191
- EINECS: N/A
- Product Categories: N/A
- Mol File: 17668-87-0.mol
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Chemical Properties
- Melting Point: N/A
- Boiling Point: N/A
- Flash Point: N/A
- Appearance: N/A
- Density: N/A
- Refractive Index: N/A
- Storage Temp.: N/A
- Solubility: N/A
- CAS DataBase Reference: (4-hydroxy-phenyl)-diazenesulfonic acid(CAS DataBase Reference)
- NIST Chemistry Reference: (4-hydroxy-phenyl)-diazenesulfonic acid(17668-87-0)
- EPA Substance Registry System: (4-hydroxy-phenyl)-diazenesulfonic acid(17668-87-0)
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Safety Data
- Hazard Codes: N/A
- Statements: N/A
- Safety Statements: N/A
- WGK Germany:
- RTECS:
- HazardClass: N/A
- PackingGroup: N/A
- Hazardous Substances Data: 17668-87-0(Hazardous Substances Data)
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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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(4-hydroxy-phenyl)-diazenesulfonic acid
