Description
Acid blue 93 (C.I. 42780) is a water-soluble dye of p.a. quality with CAS number 28983-56-4 and empirical formula C₃₇H₂₇N₃O₉S₃Na₂. The molar mass is 799,81 g/mol, and the product is As a classical acid dye for biological applications, it is used in staining procedures where intense blue colouration and aqueous solubility are required. Laboratories select this grade for microscopy, histology-related work and other dye-based protocols that benefit from a defined Colour Index designation. The preparation from manufacturer Carl ROTH is specified as p.a. and water soluble, supporting reproducible staining results and straightforward solution preparation. is practical for routine bench use and controlled inventory. Documented CAS and EG identifiers aid regulatory and quality documentation. Acid blue 93 remains a versatile choice among dyes and pigments for biological staining when consistent colour performance and clear chemical identity matter.
Key features
- Appearance: brownish crystals
- Solubility (water): complies
- Absorption max. (in H2O): 594-610 nm
- CAS number: 28983-56-4
- Pack sizes: 10 g, 25 g, 5 g, 100 g
- EG nr.: 249-352-9
- Molar mass: 799,81 g/mol
- Grade: p.a., water soluble
- Technical Information Sheet:
- Safety Data Sheet: