Eosin Y C.I. 45380

Eosin Y (C.I. 45380) Powder: A high‑purity certified powder (Acid Red 87, CI 45380) used to prepare aqueous or alcoholic stains.

Consistent Quality: We carefully source Eosin Y (CI 45380) to ensure reproducible staining performance when preparing stains for histology and cytology workflows.

Shipped from Manchester, UK Facility: Sourced and packaged in non-toxic, chemical-resistant containers, ensuring reliable quality for our customers.

Frequent Uses

H&E Stain Preparation

Used in preparing staining solutions for hematoxylin & eosin protocols. Cytoplasm and connective tissues stain vivid pink‑red while nuclei remain blue. 

Cytology Stains (Pap, Romanowsky)

Used in Pap and Romanowsky staining formulations to enhance cytoplasmic detail and contrast across cell preparations. 

Certified for Diagnostic Use (IVD)

UKAS Compliant: Ensuring your laboratory meets rigorous industry standards.

Pre‑Validated and Verified: Consistent performance using proven protocols.

Reliable and Reproducible Results: Supporting standard histopathology workflows.

Full Traceability: Manufactured with a robust audit trail for transparency and compliance.

UKCA Marked: Assured regulatory compliance within the UK market.

Full Technical Support: Expert in-house support team ready to assist with any queries.

• Biological Stain
• H & E Stain
• Cytoplasmic Stain

C.I. 45380
Dye Content: 89%
Molecular Formula: C20H6Br4Na2O5
Molecular Weight: 691.86 g/mol
Melting Point: >300 °C
Insoluble Matter: 0.08%
Loss on Drying: 1.9%
Solubility in Water: Soluble

Cas Number: 17372-87-1

Einecs Number: 241-409-6

HS Code / Commodity Code: 3212900000

Flash Point: N/A

Hazard Phrases: H319,H303

Prec Phrases: P280,P305+P351+P338