Rhodamine B

Product Description

Rhodamine B (C₂₈H₃₁ClN₂O₃) is a bright reddish-violet fluorescent dye belonging to the xanthene class of colorants. It is widely recognized for its intense color, high fluorescence quantum yield, and excellent light stability.
Rhodamine B is extensively used in fluorescence microscopy, laser dyes, tracer studies, textiles, inks, and analytical chemistry. In laboratories, it serves as a fluorometric and spectrophotometric reagent, and in industry, it is employed as a colorant in coatings, plastics, and cosmetics (where permitted).
Its strong emission properties make it a preferred standard for fluorescence calibration, biological staining, and environmental tracing applications.

Key Features

• Chemical Name: Rhodamine B
  • Chemical Formula: C₂₈H₃₁ClN₂O₃
  • CAS Number: 81-88-9
  • Molecular Weight: 479.02 g/mol
  • Appearance: Reddish-violet crystalline powder
  • Odor: Odorless
  • Solubility: Soluble in water, ethanol, and methanol; slightly soluble in acetone and chloroform
  • Purity: ≥99% (Analytical / Dye Grade)
  • Fluorescence (λmax): Excitation at ~540 nm, emission at ~625 nm
  • pH (1% Solution): Slightly acidic
  • Stability: Excellent light and heat stability

Applications

Analytical & Laboratory Uses

• Used as a fluorescent tracer and spectrophotometric standard in analytical chemistry.
  • Serves as a reference dye for fluorescence quantum yield calibration.
  • Applied in laser dye solutions and fluorometric detection assays.
  • Commonly used in pH-dependent fluorescence studies and environmental monitoring (e.g., water tracing).

Biological & Biochemical Applications

• Functions as a biological stain for cellular and tissue imaging.
  • Used in fluorescence microscopy, flow cytometry, and biosensor development.
  • Helps visualize biological processes through fluorescent labeling techniques.

Industrial & Textile Uses

• Employed as a colorant in inks, plastics, and textiles for vivid pink-red shades.
  • Used in leak detection and water flow tracing in civil and environmental engineering.
  • Occasionally used in cosmetic formulations where local regulations permit.

Safety & Handling

• Hazard: Harmful if swallowed or inhaled; may cause irritation to skin, eyes, and respiratory tract.
  • Precautions: Handle with gloves, goggles, and protective clothing. Work under proper ventilation or fume hood. Avoid contact with skin and eyes.
  • Storage: Store in a tightly closed container, in a cool, dry, and dark place. Protect from moisture and direct sunlight.
  • Emergency: In case of contact, rinse affected area with water. Seek medical attention if symptoms persist.

Why Choose Rhodamine B?

• High-purity analytical and dye-grade formulation.
  • Exceptional fluorescence intensity and color stability.
  • Ideal for laboratory, environmental, and industrial applications.
  • Professionally tested and securely packaged to ensure consistent quality.

Price in Bangladesh

Available in multiple pack sizes (10 g, 25 g, 100 g, 500 g, 1 kg) at competitive market rates.
Bulk and institutional discounts available for research, academic, and industrial clients.

Where to Buy

Rhodamine B can be purchased from certified laboratory reagent suppliers and chemical distributors throughout Bangladesh.

Why Buy from M/S Bright Scientific Co.?

• Trusted Supplier: Serving research labs, industries, and academic institutions nationwide.
  • Guaranteed Purity: Verified for analytical, fluorescence, and dye applications.
  • Affordable Pricing: Competitive rates for both small and large-scale orders.
  • Reliable Delivery: Safe packaging and fast, nationwide delivery service.

Contact Information

M/S Bright Scientific Co.
📞 Phone: 01711285976