3-(4-chloro-phenylazo)-4-hydroxy-naphthalene-2-sulfonic acid is a complex organic compound with the molecular formula C16H11ClN2O4S. It is characterized by a naphthalene core, which is a fused ring system consisting of two benzene rings. One of the naphthalene rings is substituted with a hydroxyl group (-OH) at the 4-position, and the other is modified with a sulfonic acid group (-SO3H) at the 2-position. The compound also features a phenylazo group, which is a phenyl ring (C6H5) connected to the naphthalene through an azo group (-N=N-). The phenyl ring in the azo group is further substituted with a chlorine atom at the 4-position. This chemical is known for its color properties and is often used as a dye or pigment in various industrial applications. Its specific structure and functional groups give it unique chemical and physical properties, making it a valuable compound in the field of organic chemistry and material science.
4531-72-0
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Basic information
- Product Name: 3-(4-chloro-phenylazo)-4-hydroxy-naphthalene-2-sulfonic acid
- Synonyms:
- CAS NO:4531-72-0
- Molecular Formula:
- Molecular Weight: 362.793
- EINECS: N/A
- Product Categories: N/A
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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: 3-(4-chloro-phenylazo)-4-hydroxy-naphthalene-2-sulfonic acid(CAS DataBase Reference)
- NIST Chemistry Reference: 3-(4-chloro-phenylazo)-4-hydroxy-naphthalene-2-sulfonic acid(4531-72-0)
- EPA Substance Registry System: 3-(4-chloro-phenylazo)-4-hydroxy-naphthalene-2-sulfonic acid(4531-72-0)
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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: 4531-72-0(Hazardous Substances Data)
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Check Digit Verification of cas no
The CAS Registry Mumber 4531-72-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,5,3 and 1 respectively; the second part has 2 digits, 7 and 2 respectively.Calculate Digit Verification of CAS Registry Number 4531-72:
(6*4)+(5*5)+(4*3)+(3*1)+(2*7)+(1*2)=80
80 % 10 = 0
So 4531-72-0 is a valid CAS Registry Number.
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3-(4-chloro-phenylazo)-4-hydroxy-naphthalene-2-sulfonic acid
