Basic information
- Name:
1-Naphthalenesulfonicacid, 6-diazo-5,6-dihydro-5-oxo-, sodium salt (1:1)
- Superlist Name:
- Sodium 2-diazo-1-naphthol-5-sulfonate
- CAS No.:
2657-00-3
- Molecular Structure:
- Formula:
- C10H5N2NaO4S
- Molecular Weight:
- 272.21
- Deleted CAS:
- 17427-63-3,18811-72-8,19361-54-7,369657-03-4,55967-39-0
- Synonyms:
- 1-Naphthalenesulfonicacid, 6-diazo-5,6-dihydro-5-oxo-, sodium salt (7CI,8CI,9CI);1,2-Naphthoquinone-2-diazido-5-sulfonic acid sodium salt;NA 125;Sodium1,2-naphthoquinone diazide 5-sulfonate;Sodium1,2-naphthoquinone-2-diazide-5-sulfonate;Sodium 2,1-diazonaphthol-5-sulfonate;Sodium 2-diazo-1-hydroxynaphthalene-5-sulfonate;Sodium2-diazo-1-oxo-1,2-dihydronaphthalene-5-sulfonate;
- EINECS:
- 220-189-5
- Appearance:
- yellow powder
- Hazard Symbols:
F- Risk Codes:
- 11
- Safety Description:
- 16-26-33-36 Details
- Transport Information:
- UN 3226 4.1
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Chemistry
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IUPAC Name: Sodium 6-diazonio-5-oxidonaphthalene-1-sulfonate
Molecular Formula: C10H5N2NaO4S
Molecular Weight: 272.21 g/mol
Canonical SMILES: C1=CC2=C(C=CC(=C2[O-])[N+]#N)C(=C1)S(=O)(=O)[O-].[Na+]
InChI: InChI=1S/C10H6N2O4S.Na/c11-12-8-5-4-6-7(10(8)13)2-1-3-9(6)17(14,15)16;/h1-5H,(H-,13,14,15,16);/q;+1/p-1
Mol File: 2657-00-3.mol
EINECS: 220-189-5
Stability: Stable, but may be light sensitive. Incompatible with acids, bases, strong oxidizing agents. Highly flammable - self-reactive solid type D.
H-Bond Acceptor: 5
Rotatable Bond Count: 1
Exact Mass: 271.986772
Topological Polar Surface Area: 108
Heavy Atom Count: 18
Complexity of Sodium 2-diazo-1-naphthol-5-sulfonate (CAS NO.2657-00-3): 441
Safety Profile
Hazard Codes: 
F
Risk Statements: 11
R11: Highly flammable.
Safety Statements: 16-26-33-36
S16: Keep away from sources of ignition.
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S33: Take precautionary measures against static discharges.
S36: Wear suitable protective clothing.
WGK Germany of Sodium 2-diazo-1-naphthol-5-sulfonate (CAS NO.2657-00-3): 2
Specification
Sodium 2-diazo-1-naphthol-5-sulfonate (CAS NO.2657-00-3), its Synonyms are 1-Naphthalenesulfonic acid, 6-diazo-5,6-dihydro-5-oxo-, sodium salt ; 1-Naphthalenesulfonic acid, 6-diazo-5,6-dihydro-5-oxo-, sodium salt (1:1) ; Sodium 6-diazo-5,6-dihydro-5-oxonaphthalene-1-sulphonate ; 2-Diazo-1-naphthol-5-sulfonic acid sodium salt ; 2-Diazo-1-naphthone-5-sulfonic acid, sodium salt ; 2-Diazonium-1-naphthol-5-sulfonic acid, sodium salt ; 6-Diazo-5,6-dihydro-5-oxo-1-naphthalenesulfonic acid sodium salt . It is a white to light colored solid substance.