EOSIN B
Synonym(s):Dibromodinitrofluorescein sodium;Eosin B (bluish) (C.I.45400)
- CAS NO.：548-24-3
- Empirical Formula: C20H9Br2N2NaO9
- Molecular Weight: 604.09
- MDL number: MFCD00005041
- EINECS: 208-943-1
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-06-30 13:06:43
What is EOSIN B?
Chemical properties
odourless green to reddish-brown solid
The Uses of EOSIN B
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.
The Uses of EOSIN B
Dyeing wool, cotton, and paper. In histology as a stain for epithelia, muscular fibers, nuclei, etc.
What are the applications of Application
Eosin B sodium salt is a cell and tissue stain
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
Purification Methods
Free it from inorganic halides by repeated crystallisation from butan-1-ol. [Beilstein 19/6 V 469.]
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 | |||
Properties of EOSIN B
| 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) |
Safety information for EOSIN B
Computed Descriptors for EOSIN B
EOSIN B manufacturer
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