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195235 Sigma-Aldrich

Orange II sodium salt

(Certified by the Biological Stain Commission), Dye content ≥85 %

Synonym: 4-(2-Hydroxy-1-naphthylazo)benzenesulfonic acid sodium salt, Acid Orange 7, Acid Orange A, Orange II, Tropaeolin 000 No. 2

  • CAS Number 633-96-5

  • Empirical Formula (Hill Notation) C16H11N2NaO4S

  • Molecular Weight 350.32

  •  Colour Index Number 15510

  •  Beilstein/REAXYS Number 3898201

  •  EC Number 211-199-0

  •  MDL number MFCD00011657

  •  PubChem Substance ID 24851680

  •  NACRES NA.47

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Properties

Related Categories Cell Biology, Hematology and Histology, O, Stains & Dyes, A to Z, Stains and Dyes More...
InChI Key   CQPFMGBJSMSXLP-ZAGWXBKKSA-M
composition   Dye content, ≥85%
λmax   483 nm

Description

Packaging

25, 100 g in poly bottle

Suitability

Certified for use in the Wilson-Ezrin method for pituitary acidophils, as a counterstain following Heidenhain′s or Weigert′s hematoxylin on paraffin sections, and as a substitute for orange G in Floemming′s triple stain.

Safety & Documentation

Safety Information

Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
3
RTECS 
DB7084000

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles
Peer-Reviewed Papers
15

References

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