Product Name: Rhodamine B CAS Number: 81-88-9 Molecular Formula: C??H??ClN?O? Molecular Weight: 479.01 g/mol Synonyms: Tetraethylrhodamine; Basic Violet 10; Rhodamine 4B Classification: Xanthene dye, fluorescent dye, biological staining reagent, industrial colorant, analytical reagent

Appearance: Green crystalline powder or glossy reddish-violet powder Melting Point: 210–215 °C, decomposes upon melting Boiling Point: Decomposes at high temperature with no fixed boiling point Density: 1.28 g/cm3 Solubility: Soluble in water, ethanol, methanol and acetone; slightly soluble in chloroform; insoluble in ether and benzene; bright red fluorescent in aqueous solution Stability: Stable under normal temperature and sealed condition; light sensitive; stable in weak acid and neutral medium; easy to fade under strong alkali and strong light; avoid long-term exposure to air Key Parameters: Purity ≥98.0%; Dye Content ≥95.0%; Moisture ≤1.0%; Water Insoluble Matter ≤0.5%

Rhodamine B is a classic xanthene fluorescent dye with strong fluorescence and excellent coloring performance.

Used as biological staining reagent for cell staining, fluorescence microscopy and histological analysis in biochemical and laboratory research. Applied in textile industry for dyeing wool, silk and acrylic fiber. Used in paper coloring, ink pigment, leather coloring and fluorescent pigment production. Also used as fluorescence indicator, analytical reagent for metal ion detection and tracer reagent in industrial water testing.

Packaging Laboratory grade: 10g, 50g, 100g sealed brown glass bottles Industrial grade: 1kg, 5kg, 25kg aluminum foil bags or HDPE drums with inner PE liner

Storage: Store in cool, dry, dark and well ventilated place; keep tightly sealed; avoid direct sunlight, high temperature and strong alkaline environment Shelf Life: 24 months under standard sealed dark storage Transportation: Avoid rain, humidity and strong light; handle gently to prevent package damage