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226017 Aldrich

1,2-Naphthoquinone-4-sulfonic acid sodium salt

97%

Synonym: 3,4-Dihydro-3,4-dioxo-1-naphthalenesulfonic acid sodium salt, Folin’s reagent, Sodium 1,2-naphthoquinone-4-sulfonate

  • CAS Number 521-24-4

  • Empirical Formula (Hill Notation) C10H5NaO5S

  • Molecular Weight 260.20

  •  Beilstein Registry Number 4169788

  •  EC Number 208-308-9

  •  MDL number MFCD00001700

  •  PubChem Substance ID 24853538

  • Popular Documents:  FTIR (PDF)  

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Properties

Related Categories Building Blocks, Chemical Synthesis, Organic Building Blocks, Sulfonic/Sulfinic Acids, Sulfur Compounds More...
InChI Key   UBLXEEBHYISRFM-UHFFFAOYSA-M
assay   97%
mp   289 °C (dec.)(lit.)
solubility   alcohol: slightly soluble 95%
  acetone: moderately soluble(lit.)
  benzene: insoluble(lit.)
  carbon disulfide: insoluble(lit.)
  chloroform: insoluble(lit.)
  diethyl ether: insoluble(lit.)
  petroleum ether: insoluble(lit.)
  water: soluble(lit.)

Description

Packaging

10 g in glass bottle

Application

1,2-Naphthoquinone-4-sulfonic acid sodium salt (Folin′s reagent) was used in the colorimetric assay for determination of procaine hydrochloride in pharmaceutical preparations.

Price and Availability


Laboratory Gloves
Safety & Documentation

Safety Information

Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
3
RTECS 
QK1490000
Protocols & Articles
Peer-Reviewed Papers
15

References

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