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205486 Sigma-Aldrich

Xylenol Blue

indicator grade, Dye content 90 %

Synonym: p-Xylenolsulfonephthalein, p-Xylenol Blue

  • CAS Number 125-31-5

  • Empirical Formula (Hill Notation) C23H22O5S

  • Molecular Weight 410.48

  •  Beilstein Registry Number 363132

  •  EC Number 204-736-5

  •  MDL number MFCD00005870

  •  PubChem Substance ID 24852335

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Properties

Related Categories Analytical Reagents, Analytical/Chromatography, Cell Biology, Hematology and Histology, Indicators,
grade   indicator grade
InChI Key   MGUKYHHAGPFJMC-UHFFFAOYSA-N
composition   Dye content, 90%
useful pH range   1.2 - 2.8, red to yellow (acid)
  8.0 - 9.8, yellow to violet (alkaline)
mp   212 °C (dec.)(lit.)
absorption   λmax 424 nm

Description

Packaging

1, 5 g in glass bottle

General description

Xylenol Blue is a dark brown powder and it belongs to the class of sulfonephthalein dyes. Xylenol Blue changes color from red (pH 1.2) to yellow (2.8) and yellow (8.0) to blue (9.6). It is widely used in food storage, drugs, determining bacterial growth, microbial assays and determining lipase.

Safety & Documentation

Safety Information

Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
3

Milli-Q® Water Purification Solutions

Biomedical Applications
Protocols & Articles
Peer-Reviewed Papers
15

References

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