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: 2026-04-24 14:58:28
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
New Products
2-Ethoxyphenol Methyl 2-methoxy-5-sulfamoylbenzoate Ethyl 2-chloro-2-(2-(4-methoxyphenyl)hydrazono)acetate 3,6-Dichloropyridazine 3,6-Dichloro-4-Isopropylpyridazine 2-[(2-Ethoxyphenoxy)methyl]oxirane m-Tolualdehyde p-Anisaldehyde 2-Bromobenzaldehyde 4-Fluorobenzaldehyde 1-Propyl-4-piperidone 3-Amino-3-(3-fluorophenyl)propanoic acid 6-Methyl-2-pyridinemethanol 2-Pyridinecarboxaldehdye tert-Butyl ((1R,2S,5S)-2-amino-5-(dimethylcarbamoyl)cyclohexyl)carbamate 1-Indanone 2-Chloromethyl-6-methyl-pyridine 4-Morpholinoaniline Abiraterone Ethyl Ether 1-nitro-3,5-dimethyl adamantine (NMEM) Vardenafil Bis-sulphonamide(Dimer) 3-(2-aminoethyl) benzene sulfonamide Nabumetone Impurity 5 2,2-dibromo-1-cyclopropyl-2-(2-fluorophenyl)ethan-1-oneRelated products of tetrahydrofuran








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