Product Name

  • Name

    Sodium 2-diazo-1-naphthol-5-sulfonate

  • EINECS 220-189-5
  • CAS No. 2657-00-3
  • Density 0.79
  • Solubility
  • Melting Point -114°C
  • Formula C10H5N2NaO4S
  • Boiling Point 78°C
  • Molecular Weight 272.216
  • Flash Point 12°C
  • Transport Information UN 3226 4.1
  • Appearance yellow powder
  • Safety 16-26-33-36
  • Risk Codes 11
  • Molecular Structure Molecular Structure of 2657-00-3 (Sodium 2-diazo-1-naphthol-5-sulfonate)
  • Hazard Symbols FlammableF
  • 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;
  • PSA 120.04000
  • LogP 1.63286

Synthetic route

Bisphenol B
77-40-7

Bisphenol B

sodium 2-diazo-1-oxo-1,2-dihydronaphthalene-5-sulfonate
2657-00-3

sodium 2-diazo-1-oxo-1,2-dihydronaphthalene-5-sulfonate

4-(1-(4-((6-diazo-5-oxo-5,6-dihydro-1-naphthalenyl)sulfonyl)oxyphenyl)-1-methylpropyl)phenyl 6-diazo-5-oxo-5,6-dihydro-1-naphthalenesulfonate
1064170-66-6

4-(1-(4-((6-diazo-5-oxo-5,6-dihydro-1-naphthalenyl)sulfonyl)oxyphenyl)-1-methylpropyl)phenyl 6-diazo-5-oxo-5,6-dihydro-1-naphthalenesulfonate

Conditions
ConditionsYield
Stage #1: sodium 2-diazo-1-oxo-1,2-dihydronaphthalene-5-sulfonate With bis(trichloromethyl) carbonate; triethylamine In dichloromethane at -50℃; for 1.33333h;
Stage #2: Bisphenol B With triethylamine In dichloromethane at 0℃; for 1h; Excluding light;		100%
sodium 2-diazo-1-oxo-1,2-dihydronaphthalene-5-sulfonate
2657-00-3

sodium 2-diazo-1-oxo-1,2-dihydronaphthalene-5-sulfonate

2-diazo-1-oxo-1,2-dihydronaphthalene-4-sulfonyl chloride
1001756-09-7, 3770-97-6

2-diazo-1-oxo-1,2-dihydronaphthalene-4-sulfonyl chloride

Conditions
ConditionsYield
With triethylamine; trichloromethyl chloroformate In dichloromethane at -50℃; for 1.33333 - 1.5h; Product distribution / selectivity;80%
With bis(trichloromethyl) carbonate; triethylamine In dichloromethane at -50℃; for 1.33333h; Product distribution / selectivity;80%
With bis(trichloromethyl) carbonate; triethylamine In dichloromethane at -50℃; for 1.33333h; Product distribution / selectivity;
sodium 2-diazo-1-oxo-1,2-dihydronaphthalene-5-sulfonate
2657-00-3

sodium 2-diazo-1-oxo-1,2-dihydronaphthalene-5-sulfonate

A

sodium 3-carboxyindene-7-sulfonate

sodium 3-carboxyindene-7-sulfonate

B

C20H10O8S2(2-)*2Na(1+)

C20H10O8S2(2-)*2Na(1+)

C

C20H10O8S2(2-)*2Na(1+)

C20H10O8S2(2-)*2Na(1+)

D

C20H10O8S2(2-)*2Na(1+)

C20H10O8S2(2-)*2Na(1+)

Conditions
ConditionsYield
In water Product distribution; Rate constant; Mechanism; Irradiation; irradiation between var. conditions;
...Expand
sodium 2-diazo-1-oxo-1,2-dihydronaphthalene-5-sulfonate
2657-00-3

sodium 2-diazo-1-oxo-1,2-dihydronaphthalene-5-sulfonate

Sodium; 1-oxa-cyclopropa[a]naphthalene-4-sulfonate

Sodium; 1-oxa-cyclopropa[a]naphthalene-4-sulfonate

Conditions
ConditionsYield
Product distribution; Rate constant; laser flash photolysis in methanol or water;
methanol
67-56-1

methanol

sodium 2-diazo-1-oxo-1,2-dihydronaphthalene-5-sulfonate
2657-00-3

sodium 2-diazo-1-oxo-1,2-dihydronaphthalene-5-sulfonate

A

Sodium; 1-oxomethylene-1H-indene-4-sulfonate

Sodium; 1-oxomethylene-1H-indene-4-sulfonate

B

Sodium; 1-[1-hydroxy-1-methoxy-meth-(E)-ylidene]-1H-indene-4-sulfonate

Sodium; 1-[1-hydroxy-1-methoxy-meth-(E)-ylidene]-1H-indene-4-sulfonate

C

Sodium; 5-hydroxy-6-methoxy-naphthalene-1-sulfonate

Sodium; 5-hydroxy-6-methoxy-naphthalene-1-sulfonate

Conditions
ConditionsYield
Quantum yield; Product distribution; Mechanism; Irradiation; other substituted and unsubstituted diazodihydronaphthalenones; other aliphatic alcohols and H2O;
...Expand

Sodium 2-diazo-1-naphthol-5-sulfonate Chemical Properties


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

Sodium 2-diazo-1-naphthol-5-sulfonate Safety Profile

Hazard Codes: FlammableF
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

Sodium 2-diazo-1-naphthol-5-sulfonate 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.

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