Eosin B Powder CAS 548-24-3 Dye Content 90%

Eosin B powder CAS 548-24-3 Dye content 90%​

FAQ
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5:How about your delivery time?
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6:How do you treat quality complaint?
A: First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.
 

Application

Eosin B has been used for the histological analysis of anal sphincter sections obtained from rats.

It has been used along with Mayer′s hematoxylin for the staining of triangularis sterni muscle sections.

It has been used along with hematoxylin for the staining of different tissue sections obtained from mouse.

Biochem/physiol Actions

Eosin B is a xanthene dye and is also referred to as eosin bluish or erythrosin B. It is used in the Harris stain for Negri bodies. Eosin B is also used in Mayer′s Hemalum as a counterstain for collagen. Eosin B-Azure A are used together for the staining of cell granules, nuclei and microorganisms. It can also be used for protein estimation. The protein - eosin B complex absorbs at wavelength range of 536–544nm and the change in blue shift helps in determining the protein concentration.

Suitability

Counterstain for collagen, following Mayer′s Hemalum. Used with Azure A as a tissue stain for cell granules, nuclei, and microorganisms. For differential staining of cells of the anterior pituitary.

Product Name:	EOSIN B
Synonyms:	C.I. Acid Red 91;Eosin B, high purity biological stain;Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 4',5'-dibromo-3',6'-dihydroxy-2',7'-dinitro-, disodium salt;2-(4,5-dibromo-3,6-dihydroxy-2,7-dinitroxanthen-9-yl)-benzoic acid, disodium salt;EOSIN B CERTIFIED;EOSIN B CERTIFIED (C.I. 45400);EOSIN SCARLET, FOR MICROSCOPY;EOSIN BLUISH, WATER-SOLUBLE, PURE, FOR M ICROSCOPY
CAS:	548-24-3
MF:	C20H9Br2N2NaO9
MW:	604.09
EINECS:	208-943-1
Product Categories:	Organics;Xanthene
Mol File:	548-24-3.mol

Melting point	275 °C (dec.)(lit.)
storage temp.	Store at +5°C to +30°C.
solubility	spirit: soluble
Colour Index	45400
form	Solid
color	Very dark purple-red to dark brown
PH	6.2 (10g/l, H2O, 25℃)
Water Solubility	Soluble in water (390 g/L at 20°C), and ethanol.
λmax	514 nm, 395 nm
Merck	14,3602
BRN	4121964
Stability:	Stable. Incompatible with strong oxidizing agents.
Biological Applications	Antimalarial agent; protein assay; detecting enzyme activity; treating cancer,malaria,diabetes,a variety of conditions affecting skin,mouth,digestive tract,urinary tract,reproductive tract,respiratory tract,circulatory sys
EPA Substance Registry System	Eosin B (548-24-3)