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Hematoxylin with CAS 517-28-2

what is of  Hematoxylin with CAS 517-28-2?

White to yellowish crystals that redden on exposure to light.

1.Quick details of Hematoxylin with CAS 517-28-2

CAS No.:517-28-2
Other Names:Hematoxylin
EINECS No.:208-237-3
Place of Origin:Shandong, China
Classification:High Purity Reagents
Product name:Hematoxylin 99% CAS 517-28-2
Molecular Weight::302.2788
Hematoxylin Density:1.709g/cm3
Refractive index::1.81
Hematoxylin Melting point:100-120℃
Boiling point:579.9°C at 760 mmHg
Flash point::304.5°C
Description of  Hematoxylin with CAS 517-28-2

Melting point 200 °C (dec.)(lit.)
Boiling point 363.32°C (rough estimate)
density 1.2514 (rough estimate)
refractive index 1.4600 (estimate)
storage temp. Keep in dark place,Inert atmosphere,Room temperature
solubility Soluble in 95% ethanol(1 mg/mL).
form Powder/Solid
Colour Index 75290
pka 6.7(at 25℃)


Hematoxylin and eosin together make up Hematoxylin and eosin stain, one of the most commonly used stains in histology. Metal-haematein complexes are used to stain cell nuclei prior to examination under a microscope. Structures that stain with iron- or aluminum-haematein are often called basophilic, even though the mechanism of the staining is different from that of staining with basic dyes.