Astral blue

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Structural formula
Structure of astrab blue
General
Surname Astral blue
other names
  • Astra Blue Base 6 GLL
  • Basic Blue 140
Molecular formula C 47 H 52 CuN 14 O 6 S 3
External identifiers / databases
CAS number 82864-57-1
EC number 280-054-1
ECHA InfoCard 100,072,755
Wikidata Q750333
properties
Molar mass 1068.75 g mol −1
Physical state

firmly

solubility

moderate in water (150 g l −1 )

safety instructions
GHS labeling of hazardous substances
no GHS pictograms
H and P phrases H: no H-phrases
P: no P-phrases
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Astrablau (also Basic Blue 140 ) belongs to the group of phthalocyanine dyes and is required , among other things, in microscopy for staining unwooded cell walls . It is a cationic , water-soluble dye that contains copper as its central atom . Astra blue colors mainly acidic mucopolysaccharides .

Astra blue can be used together with safranin in a double coloration of herbal preparations, whereby safranin colors lignified cell walls red, while unwooded cell walls are given a blue coloring by astrab blue. It is also used in pathology and cell biology to stain certain tumors and to differentiate between mast cells in the mucous membrane and connective tissue .

Individual evidence

  1. ↑ a b c data sheet Astra Blue from Sigma-Aldrich , accessed on May 9, 2017 ( PDF ).
  2. ↑ Römpp Chemielexikon. 1998
  3. ↑ Bloom, G. and Kelly, JW: The copper phthalocanin dye “Astrablau” and its staining properties, especially the staining of mast cells. Histochemistry, 2 , 48-57.
  4. ^ G. Wanner: Microscopic-botanical internship. Georg Thieme Verlag, 2004, ISBN 978-3-13-440312-1 .
  5. ↑ T. Löning, L. Riethdorf, W. Doerr, E. Uehlinger, G. Seifert: Special pathological anatomy: a teaching and reference work. Springer, 2001, ISBN 978-3-540-66372-0 .
  6. ^ T T. MacDonald: Advances in Mucosal Immunology: Proceedings of the Fifth International Congress of Mucosal Immunology. Springer, 1990, ISBN 978-0-7462-0113-8 .

Web links