Product Specifications
| Specifications | Parameters |
|---|---|
| Dye Content (By Spectrophotometry) | >70% |
| Transition Range | Ph 4.3-6.3 |
| Yellow-Pink | |
| Ph 9.4-12.0 | |
| Brown Orange-Violet | |
| Solubility 0.1% (Dist. Water) | Clear Solution |
| Absorption Max (0.1N Naoh) Λ₁max | 553-559Nm |
| Absorption Max (0.1N Naoh) Λ₂max | 553-559Nm |
| Absorptivity (A1%/1Cm At 556 Λ₁max) | >350 |
| Absorptivity (A1%/1Cm At 595 Λ₂max) | >325 |
| Loss On Drying (110⁰C) | <5% |
| Suitability For Microscopy | Passes Test |
| Specifications | Parameters |
|---|
| C.A.S. No. | 17372-87-1 |
| C.I. No. | 45380 |
| Molecular Weight | 691.88g/mole |
| Solubility 0.1% (water + 1ml 1% Na2CO3) | Clear solution |
| Absorption Maximum in (water + 1ml 1% Na2CO3) | 512 – 518 nm |
| Absorptivity 1%/ 1cm,in (water + 1ml 1% Na2CO3) | > 1200 |
| Dye content (by Spectrophotometry) | > 85% |
| Loss On Drying at 110 degrees C (1hr) | < 8 % |
Average Stock Availability (in Kg)
- Upto 25
- 25 to 100
- 500 to 1000
- Above 1000
Eosin Yellow Sodium Salt
Eosin Y (or just more commonly, eosin) is a water soluble dye and is a red crystalline powder, frequently used in textile dyeing and ink manufacturing. When in the sodium salt form, it’s a biological stain, and is also any of a class of red acid dyes of the xanthene group used as cytoplasmic stains and as counter-stains. Eosin can be used to stain cytoplasm, red blood cells, collagen, and muscle fibers for histological examination. A versatile red dye used in cosmetics, pharmaceuticals, textiles, etc., and as tissue stain, vital stain, and counterstain with HEMATOXYLIN. It is also used in special culture media.
Eosin Y is a xanthene dye and is used for the differential staining of connective tissue and cytoplasm. In histopathology, it is applied as a counterstain after hematoxylin and before methylene blue. It is also used as a background stain, thereby giving contrast to the nuclear stains. Eosin Y Free Acid is widely used as a biological stain in histology, cytology, and microscopy. It is commonly employed to stain cell structures, including cytoplasmic regions, connective tissues, and collagen fibers. The dye provides contrast and aids in the visualization of specific tissue components.
pH Indicator: Eosin Y Free Acid can also function as a pH indicator due to its pH-dependent color changes. It appears yellow in acidic solutions and transitions to red in alkaline conditions. This property makes it useful for pH measurements and as an indicator in various chemical assays. It can be used for dyeing natural and synthetic fibers to achieve various shades of red. The dye is utilized in the production of inks, particularly in the printing industry.
It can be incorporated into various types of inks, including water-based and solvent-based inks, for applications such as offset printing and inkjet printing. Eosin Y Free Acid contributes to achieving vibrant red colors in printed materials. Eosin Y Free Acid exhibits inherent fluorescence properties and can be used as a fluorescent dye. It is employed in fluorescence microscopy and imaging techniques to visualize cellular structures and study biological processes.
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