Histology
The counterstain in H&E staining, colouring cytoplasm and connective tissue pink.
Powder
Speciality Dyes · Extra Pure
Eosin Y
Also known as Eosin yellowish, Acid Red 87 and Tetrabromofluorescein disodium salt
CAS17372-87-1
FormulaC₂₀H₆Br₄Na₂O₅
MW691.85
A bromo-fluorescein dye: the eosin counterstain of H&E histology, and a red dye for inks.
AssayOn request
GradeExtra Pure
MW691.85
ISO 9001:2015 certified supplier
Overview
About Eosin Y
Eosin Y is the disodium salt of tetrabromofluorescein. It dissolves in water to give a red solution with a yellow-green fluorescence.
It is best known as the pink counterstain in haematoxylin and eosin (H&E) staining, the routine method in histology laboratories.
IdentityC₂₀H₆Br₄Na₂O₅
- CAS number
- 17372-87-1
- Molecular formula
- C₂₀H₆Br₄Na₂O₅
- Molecular weight
- 691.85
- Appearance
- Red to orange-red powder
- Grade
- Extra Pure
Technical specification
Specification on request
We will send the current specification sheet for Eosin Y, Extra Pure grade, with your quote, including the assay, limits and test methods.
Have your own limits?Send them with your enquiry. Our team will confirm which limits we can meet before you order.
Ask for the specification
Applications
Where Eosin Y is used
Cytology stains
A component of Papanicolaou and Romanowsky-type stains.
Inks & colourants
Colours red inks, cosmetics-grade colourants and dyes.
Packing
Packed to your order
We pack Eosin Y in sealed containers suited to the product, from laboratory bottles to bulk packs. Every container carries the product name, batch number, dates and hazard labels. Tell us the pack size and quantity you need.
Storage & handling
Keep it dry, closed and out of the light
- Store in the original, tightly closed container in a cool, dry, well-ventilated place.
- Protect from direct light and moisture.
- Dyes stain skin, clothing and surfaces strongly. Wear gloves, eye protection and a dust mask when handling.
Read the MSDS for full hazard, first-aid and disposal information.
Documents
Specification and safety documents
Ask for any of these and we will email them with your quote.
Questions
Frequently asked
Which pack sizes can I order?
Tell us the quantity you need. We will suggest the right pack, from laboratory bottles to bulk packs, with your quote.
Can I see the specification for Eosin Y?
Yes. Ask for the specification sheet with your enquiry and we will send the current limits and test methods.
Can you supply against our own specification?
Send your specification with your enquiry. Our team will confirm which limits we can meet before you order.
Do you ship outside India?
Yes. We hold an Import Export Code and supply both domestic and export buyers. Mention the destination country in your enquiry so we can quote the right packing and documents.
Related products
Other speciality dyes
Enquire
Get a quote for Eosin Y
Tell us the quantity, pack size and destination. We will confirm price, availability and lead time, and send the documents you need.
Phone & WhatsApp+91 77530 58907
Emailankur.agrawal@spacorporation.in