4-Hydroxy-3-[[4-(phenylazo)phenyl]azo]naphthalene-2,7-disulfonic acid disodium salt is a complex organic compound with the chemical formula C24H16N4Na2O7S2. It is a disodium salt derived from 4-hydroxy-3-[[4-(phenylazo)phenyl]azo]naphthalene-2,7-disulfonic acid, which is characterized by the presence of two sulfonic acid groups at the 2 and 7 positions of the naphthalene ring. The molecule features a phenylazo group attached to a phenyl ring, which in turn is connected to the naphthalene core through another azo linkage. 4-Hydroxy-3-[[4-(phenylazo)phenyl]azo]naphthalene-2,7-disulfonic acid disodium salt is known for its potential applications in the field of chemistry, particularly in the synthesis of dyes and pigments, due to its ability to form colored compounds. It is also of interest in research for its possible use in analytical chemistry and as a reagent in various chemical reactions.

6406-51-5

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Basic information
1. Product Name: 4-Hydroxy-3-[[4-(phenylazo)phenyl]azo]naphthalene-2,7-disulfonic acid disodium salt
2. Synonyms: 4-Hydroxy-3-[[4-(phenylazo)phenyl]azo]naphthalene-2,7-disulfonic acid disodium salt;C.I.26760;Crocein AZ
3. CAS NO:6406-51-5
4. Molecular Formula: C22H16N4O7S2.2Na
5. Molecular Weight: 0
6. EINECS: N/A
7. Product Categories: N/A
8. Mol File: 6406-51-5.mol
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: /
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: 4-Hydroxy-3-[[4-(phenylazo)phenyl]azo]naphthalene-2,7-disulfonic acid disodium salt(CAS DataBase Reference)
10. NIST Chemistry Reference: 4-Hydroxy-3-[[4-(phenylazo)phenyl]azo]naphthalene-2,7-disulfonic acid disodium salt(6406-51-5)
11. EPA Substance Registry System: 4-Hydroxy-3-[[4-(phenylazo)phenyl]azo]naphthalene-2,7-disulfonic acid disodium salt(6406-51-5)
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: 6406-51-5(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 6406-51-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,4,0 and 6 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 6406-51:
(6*6)+(5*4)+(4*0)+(3*6)+(2*5)+(1*1)=85
85 % 10 = 5
So 6406-51-5 is a valid CAS Registry Number.

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