- Eosin B
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- $0.00 / 1KG
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2025-09-18
- CAS:548-24-3
- Min. Order: 1KG
- Purity: 98%min
- Supply Ability: 30tons/month
- Acid Red
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- $350.00 / 100g
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2024-02-18
- CAS:548-24-3
- Min. Order: 1g
- Purity: 98
- Supply Ability: 500 Kg
- Eosine I Bluish
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- $1.00 / 1KG
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2019-07-10
- CAS:548-24-3
- Min. Order: 1KG
- Purity: 99%
- Supply Ability: 25kg
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| | EOSIN B Basic information |
| 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 |  |
| | EOSIN B Chemical Properties |
| Melting point | 275 °C (dec.)(lit.) | | bulk density | 680kg/m3 | | 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) |
| Hazard Codes | Xn | | Risk Statements | 22 | | Safety Statements | 22-24/25 | | WGK Germany | 3 | | TSCA | Yes | | HS Code | 3204 12 00 |
| | EOSIN B Usage And Synthesis |
| Chemical Properties | odourless green to reddish-brown solid | | Uses | Dyeing wool, cotton, and paper. In histology as a stain for epithelia, muscular fibers, nuclei, etc. | | 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. | | Preparation | will 4′,5′-Dibromofluorescein?(C.I. Acid Orange 11, C.I. 45370) nitrification, and translated into sodium salt or ammonium salt. | | Definition | ChEBI: An organic sodium salt which is the disodium salt of eosin b diphenol. | | Biological Activity | 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. | | storage | Room temperature | | Properties and Applications | colourful red blue light.
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Standard
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Light Fastness
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Soaping
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Persperation Fastness
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Oxygen bleaching
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Fastness to seawater
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Fading
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Stain
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Fading
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Stain
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Fading
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Stain
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ISO
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3
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3
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3
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3
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3
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| | Purification Methods | Free it from inorganic halides by repeated crystallisation from butan-1-ol. [Beilstein 19/6 V 469.] |
| | EOSIN B Preparation Products And Raw materials |
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