Home » speciality Dyes and Biological Stains » Eosin Y (Acid Red 87)
What is Eosin Y?
Eosin Y, also referred to as Acid Red 87, is a xanthene dye and belongs to the family of triarylmethane dyes. It is derived from Fluorescein through the process of bromination.
Macsen Laboratories is the leading manufacturer and supplier of Eosin Y with ISO certification.
| PRODUCT SPECIFICATIONS | |
|---|---|
| PRODUCT NAME | Eosin Y |
| SYNONYMS | Acid Red 87; Disodium Eosine; Eosin ws; C.I 45380; Eosin yellowish; Bronze Bromo; Certiqual Eosine |
| CAS No | 17372-87-1 |
| Color Index No | 45380 |
| Molecular Formula | C20H8Br4NaO5+ |
| Molecular Weight | 670.9 g/mol |
| PubChem CID | 24180873 |
SPECIFICATIONS
| SR. No | Criteria | Limit/Specification |
|---|---|---|
| 1 | APPEARANCE | Red Crystalline Powder, Hygroscopic, when examined in UV Light at 365nm it Exhibits greenish yellow Fluorescence |
| 2 | SOLUBILITY | Must Pass Test |
| 3 | LOSS ON DRYING | NMT 13.0% |
| 4 | SULPHATED ASH TEST | NMT 25.0% |
| 5 | ASSAY (WITH REFERENCE TO SUBS. DRIED AT100- 105˚C. | MINIMUM 85.0% |
Uses
- Eosin Y is most frequently utilized in the printing industry as the red dye for red inks.
- In addition, Eosin Y is extensively employed in the Papanicolaou stain, commonly known as the Pap stain, which is used in the Pap test, as well as the Romanowsky type of cytologic stains.
- It is often used in histology, especially in the H&E (Hematoxylin and Eosin) stain.
- It is also used as a photosensitizer in organic synthesis.
Buy high purity Eosin Y (Acid Red 87) from Macsen Laboratories. For buying, send us an enquiry-
Resources
Eosin | Properties, Available variants & Uses
Biological Stains | Classification, Examples & Uses