Product Description
Sudan Black B is a fat-soluble diazo dye widely used for staining lipids, phospholipids, and sterols in biological tissues and cells. It is part of the Sudan dye family and provides a deep blue-black coloration to lipid-rich components, making it ideal for microscopic examination, histology, cytology, and hematology.
Known for its high staining specificity and contrast, Sudan Black B is extensively used in laboratory research, medical diagnostics, and industrial quality control. It is especially valuable in identifying fat deposits in cells, lipoproteins in blood smears, and oil contamination in materials.

Key Features
- Chemical Name: Sudan Black B (Diazo dye)
• Chemical Formula: C₂₉H₂₄N₆
• Molecular Weight: 464.54 g/mol
• CAS Number: 4197-25-5
• Appearance: Dark blue to black powder or crystals
• Solubility: Insoluble in water; soluble in alcohols, chloroform, and oils
• Dye Type: Lipophilic (fat-soluble) azo dye
• Melting Point: ~120–125°C (decomposes)
• Absorption Maximum: ~596 nm (in ethanol)
• Purity: Analytical / Laboratory Grade
Applications
Laboratory & Research
- Commonly used for staining lipids, phospholipids, and sterols in tissues and smears.
• Helps in identifying fat-containing cells in bone marrow and blood.
• Used in hematological studies to stain granules of granulocytes and reticulocytes.
• Applied in cytochemical analysis and histopathology for lipid detection.
• Used in biochemical assays involving lipid quantification and visualization.
Industrial Uses
- Used for detecting oils and greases in industrial samples.
• Applied as a colorant in waxes, plastics, and resins.
• Employed in forensic and environmental testing for hydrocarbon contamination.
Safety & Handling
- Hazard: Avoid inhalation and contact; may cause irritation to eyes, skin, and respiratory tract.
• Precautions: Use gloves, goggles, and protective clothing during handling.
• Storage: Store in a cool, dry, and light-protected area. Keep container tightly closed.
• Disposal: Dispose of according to local environmental and laboratory waste regulations.
Why Choose Sudan Black B from M/S Bright Scientific Co.?
- High-purity dye for consistent, reliable lipid staining.
• Provides sharp, distinct coloration with excellent reproducibility.
• Tested and approved for histological and cytological applications.
• Available in various pack sizes for academic, research, and industrial use.
• Trusted supplier offering fast delivery and competitive pricing in Bangladesh.
Price in Bangladesh
Available in 10 g, 25 g, 50 g, and 100 g packs.
Bulk discounts available for research laboratories, universities, and diagnostic centers.
Contact Information
M/S Bright Scientific Co.
📞 Phone: 01711285976






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