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33505 Sigma-Aldrich

2-Diazo-1-naphthol-4-sulfonic acid hydrate

≥97.0%

Synonym: 3-Diazo-3,4-dihydro-4-oxonaphthalene-1-sulfonic acid

  • CAS Number 20680-48-2

  • Empirical Formula (Hill Notation) C10H6N2O4S · xH2O

  • Molecular Weight 250.23 (anhydrous basis)

  •  Beilstein/REAXYS Number 2813507

  •  EC Number 243-965-5

  •  MDL number MFCD00082247

  •  PubChem Substance ID 24860282

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Properties

assay   ≥97.0%
impurities   ≤10% water
ign. residue   ≤2% (as SO4)
Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
Precautionary statements 
RIDADR 
UN 3226A2 4.1 / PGII
WGK Germany 
3

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Certificate of Analysis (COA)

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