CAS 548-24-3 Eosin B Powder Certified By The Biological Stain Commission

CAS 548-24-3 Eosin B powder certified by the Biological Stain Commission

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1:Can I get some samples before bulk order?
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5:How about your delivery time?
A: Generally, it will take 3 to 5 days after receiving your advance payment.
 
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.
 

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)

Chemical Properties	odourless green to reddish-brown solid
Uses	Eosin B sodium salt is a cell and tissue stain. Eosin B sodium salt is used as a counter stain for collagen, as a tissue stain for cell granules, nuclei, and microorganisms when coupled with Azure A (sc-203729), and as a stain for cell differentiation of the anterior pituitary.
Uses	Dyeing wool, cotton, and paper. In histology as a stain for epithelia, muscular fibers, nuclei, etc.
Definition	ChEBI: An organic sodium salt which is the disodium salt of eosin b diphenol.
Preparation	will 4′,5′-Dibromofluorescein?(C.I. Acid Orange 11, C.I. 45370) nitrification, and translated into sodium salt or ammonium salt.
storage	Room temperature
Properties and Applications	colourful red blue light. Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater Fading Stain Fading Stain Fading Stain ISO 3 3   3 3   3