4,5-Dihydroxy-3-[[4-(phenylazo)phenyl]azo]naphthalene-2,7-disulfonic acid disodium salt is a complex organic compound with the chemical formula C24H16N4Na2O8S2. It is a disodium salt derived from the parent compound 4,5-dihydroxy-3-[[4-(phenylazo)phenyl]azo]naphthalene-2,7-disulfonic acid. 4,5-Dihydroxy-3-[[4-(phenylazo)phenyl]azo]naphthalene-2,7-disulfonic acid disodium salt is characterized by the presence of two hydroxyl groups at the 4 and 5 positions, an azo group connecting a phenyl ring to another phenyl ring, and two sulfonic acid groups at the 2 and 7 positions. The disodium salt form indicates that two sodium ions are associated with the compound, likely neutralizing the acidic sulfonic groups. This chemical is known for its use as a pH indicator, changing color in response to changes in pH levels, which makes it useful in various analytical and diagnostic applications in chemistry and biology.

6226-96-6

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Basic information
1. Product Name: 4,5-Dihydroxy-3-[[4-(phenylazo)phenyl]azo]naphthalene-2,7-disulfonic acid disodium salt
2. Synonyms: 4,5-Dihydroxy-3-[[4-(phenylazo)phenyl]azo]naphthalene-2,7-disulfonic acid disodium salt;C.I.27560;Chromotrope 7B
3. CAS NO:6226-96-6
4. Molecular Formula: C22H16N4O8S2.2Na
5. Molecular Weight: 0
6. EINECS: N/A
7. Product Categories: N/A
8. Mol File: 6226-96-6.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: 4,5-Dihydroxy-3-[[4-(phenylazo)phenyl]azo]naphthalene-2,7-disulfonic acid disodium salt(CAS DataBase Reference)
10. NIST Chemistry Reference: 4,5-Dihydroxy-3-[[4-(phenylazo)phenyl]azo]naphthalene-2,7-disulfonic acid disodium salt(6226-96-6)
11. EPA Substance Registry System: 4,5-Dihydroxy-3-[[4-(phenylazo)phenyl]azo]naphthalene-2,7-disulfonic acid disodium salt(6226-96-6)
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: 6226-96-6(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 6226-96-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,2,2 and 6 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 6226-96:
(6*6)+(5*2)+(4*2)+(3*6)+(2*9)+(1*6)=96
96 % 10 = 6
So 6226-96-6 is a valid CAS Registry Number.

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