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68250 Sigma-Aldrich

Methyl Orange

for microscopy (Hist.), indicator (pH 3.0-4.4)

Synonym: 4-[4-(Dimethylamino)phenylazo]benzenesulfonic acid sodium salt, Acid Orange 52, Helianthin, Orange III

  • CAS Number 547-58-0

  • Empirical Formula (Hill Notation) C14H14N3NaO3S

  • Molecular Weight 327.33

  •  Beilstein Registry Number 4732884

  •  Colour Index Number 13025

  •  EC Number 208-925-3

  •  MDL number MFCD00007502

  •  PubChem Substance ID 24885717

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Properties

Related Categories Analytical Reagents, Analytical/Chromatography, Indicators, Microscopy Reagents, Redox Indicators,
grade   for microscopy (Hist.)
  indicator (pH 3.0-4.4)
InChI Key   STZCRXQWRGQSJD-GEEYTBSJSA-M
pH range   3.0 - 4.4, pink to yellow
absorption   501.4 nm in H2O (acidified)

Description

Other Notes

Same product — same quality — now Sigma-Aldrich brand

Price and Availability

Suggested Laboratory Gloves


Laboratory GlovesThis substance has been tested against several types of hand protection for CE compliance. Click below to find the recommended gloves for handling this product.



Safety & Documentation

Safety Information

Symbol 
GHS06  GHS06
Signal word 
Danger
Hazard statements 
Precautionary statements 
RIDADR 
UN 3143PSN1 6.1 / PGIII
WGK Germany 
3
RTECS 
DB6327000
Protocols & Articles
Peer-Reviewed Papers
15

References

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