Eosin Y, dye content 99%

Name: Eosin Y, dye content 99%
Brand: Vaqora Chemicals
SKU: VQ-000557

About Eosin Y, dye content 99%

Eosin Y (CAS 15086-94-9) is a biological stain offered by Vaqora Chemicals in Puriss grade, specified at 99% purity. Its molecular formula is C20H8Br4O5 and its molecular weight is 647.9 g/mol. The IUPAC name is 2',4',5',7'-tetrabromo-3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one. Alternative names: 2′,4′,5′,7′-Tetrabromofluorescein and Acid Red 87.

The material typically appears as a light red to red and pink powder. Keep the container tightly sealed and store it in a cool, dry area. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

Typical applications include histology and cytology staining, microscopy, clinical laboratories and biological staining. Buyers come mainly from academic and industrial research, diagnostics and biotechnology and textiles and dyeing.

Standard pack sizes are 5 g, 25 g, 100 g and 1 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Histology & cytology staining
Microscopy
Clinical laboratories
Biological staining

Industries

Specifications & identifiers

Chemical identifiers
Product name	Eosin Y, dye content 99%
Catalogue No.	VQ-000557
CAS Number	15086-94-9
IUPAC name	2',4',5',7'-tetrabromo-3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one
Molecular formula	C₂₀H₈Br₄O₅
Molecular weight	647.9 g/mol
Exact mass	647.7064
Grade	Puriss
Purity / assay	99%
HSN code	32041200
InChIKey	DBZJJPROPLPMSN-UHFFFAOYSA-N
SMILES	C1=CC=C2C(=C1)C(=O)OC23C4=CC(=C(C(=C4OC5=C(C(=C(C=C35)Br)O)Br)Br)O)Br
PubChem CID	27020

Physical properties
Physical form	Powder
Appearance	Light red to red and pink powder
Solubility	Clear to very hazy
LogP (XLogP3)	6.2
H-bond donors / acceptors	2 / 5
TPSA	76 Å²
Synonyms	2′,4′,5′,7′-Tetrabromofluorescein, Acid Red 87, Bromo acid J. TS, or XX, Bromofluorescein, Bronze Bromo ES, Eosin yellowish, Solvent red 43, 2',4',5',7'-Tetrabromofluorescein, C.I. Solvent Red 43, 3,6-Dihydroxy-2,4,5,7-tetrabromospiro(xanthene-9,3'-phthalide), Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 2',4',5',7'-tetrabromo-3',6'-dihydroxy-

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed

Precautionary statements: P264, P270, P301 + P317, P330, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Eosin Y, dye content 99%?

The CAS Registry Number of Eosin Y, dye content 99% is 15086-94-9. It is also known as 2′,4′,5′,7′-Tetrabromofluorescein, Acid Red 87, Bromo acid J. TS.

What is the molecular formula and molecular weight of Eosin Y, dye content 99%?

Eosin Y, dye content 99% has the molecular formula C20H8Br4O5 and a molecular weight of 647.9 g/mol. Its IUPAC name is 2',4',5',7'-tetrabromo-3',6'-dihydroxyspiro[2-benzofuran-3,9'-xanthene]-1-one.

Which grade and pack sizes of Eosin Y, dye content 99% can I order?

We supply Eosin Y, dye content 99% in Puriss (99%) grade, in 5 g, 25 g, 100 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Eosin Y, dye content 99%?

Yes. Every lot of Eosin Y, dye content 99% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Eosin Y, dye content 99% be shipped internationally?

Yes. Eosin Y, dye content 99% is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.