4-(4-methoxy-[1]naphthylazo)-benzenesulfonic acid is a complex organic compound with the chemical formula C17H15N2O4S. It is a derivative of benzenesulfonic acid, featuring a naphthylazo group attached to the 4-position of the benzene ring. The naphthylazo group consists of a naphthalene molecule linked to a nitrogen atom, which in turn is connected to the benzene ring. The compound also has a methoxy group (-OCH3) attached to the naphthalene part of the naphthylazo group. This chemical is often used as a chromogenic agent in analytical chemistry for the detection and quantification of certain metal ions, particularly due to its ability to form colored complexes with these ions. Its structure and properties make it a valuable reagent in various colorimetric assays and analytical procedures.

3319-36-6

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Basic information
1. Product Name: 4-(4-methoxy-[1]naphthylazo)-benzenesulfonic acid
2. Synonyms:
3. CAS NO:3319-36-6
4. Molecular Formula:
5. Molecular Weight: 342.375
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: 4-(4-methoxy-[1]naphthylazo)-benzenesulfonic acid(CAS DataBase Reference)
10. NIST Chemistry Reference: 4-(4-methoxy-[1]naphthylazo)-benzenesulfonic acid(3319-36-6)
11. EPA Substance Registry System: 4-(4-methoxy-[1]naphthylazo)-benzenesulfonic acid(3319-36-6)
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: 3319-36-6(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 3319-36-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,3,1 and 9 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 3319-36:
(6*3)+(5*3)+(4*1)+(3*9)+(2*3)+(1*6)=76
76 % 10 = 6
So 3319-36-6 is a valid CAS Registry Number.

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