Rhodamine B
Rhodamine B is a bright pink to reddish-purple synthetic dye belonging to the xanthene family. It is widely used as a fluorescent tracer dye and coloring agent due to its strong fluorescence and high photostability. Rhodamine B finds applications in analytical chemistry, biological staining, and industrial processes requiring vivid coloration or fluorescence detection.
Rhodamine B
Primary Uses
- Analytical Chemistry and Fluorescence Tracing
- Used as a fluorescent tracer dye in water flow studies, leak detection, and dye tracing in environmental research.
- Applied in fluorescence microscopy and flow cytometry for staining and detecting biological samples.
- Textile Industry
- Utilized as a dye for coloring synthetic fibers, nylon, and polyester fabrics.
- Provides bright and durable coloration in fabric dyeing processes.
- Biological and Medical Research
- Employed as a staining agent for cells and tissues in histology and cytology.
- Used in fluorescence-based assays and imaging techniques to visualize biological structures.
Secondary Uses
- Ink and Paint Manufacturing
- Incorporated in inks and paints to produce vivid fluorescent colors.
- Laser Dyes and Optics
- Used in laser technology as a gain medium in dye lasers.
- Plastics and Polymers
- Added to plastics and resins to impart fluorescent properties for identification or decoration.
1. Basic Identification Attributes
- Chemical Name (IUPAC): [9-(2-carboxyphenyl)-6-(diethylamino)xanthen-3-ylidene]diethylammonium chloride
- Common/Trade Name: Rhodamine B
- CAS Number: 81-88-9
- HS Code: 3204.17
- Synonyms: Basic Violet 10, C.I. 45170
2. Physical & Chemical Properties
- Physical State: Powder or solid crystals
- Color & Odor: Dark pink to reddish-purple; odorless
- Solubility: Soluble in water and ethanol
- Melting Point: Approx. 228°C (decomposes)
- Fluorescence: Strong pink-red fluorescence under UV light
3. Safety & Hazard Attributes
- GHS Classification: Harmful if swallowed, suspected carcinogen
- Toxicity: Moderate toxicity; handle with care
- Exposure Limits: Use with appropriate safety measures
4. Storage & Handling Attributes
- Storage Conditions: Store in tightly closed containers, away from light and moisture
- Container Type: Sealed plastic or glass containers
- Shelf Life: Stable if stored properly in a cool, dry place
- Handling Precautions: Avoid inhalation and skin contact; use protective equipment
5. Regulatory & Compliance Attributes
- Subject to chemical safety regulations
- Use restricted or regulated in some countries due to toxicity concerns
6. Environmental & Health Impact
- Biodegradability: Not readily biodegradable
- Ecotoxicity: Toxic to aquatic organisms
- Bioaccumulation: Potential for bioaccumulation
Safety Handling Precautions
- PPE Required: Gloves, goggles, protective clothing, and dust mask or respirator
- Handling Guidelines: Use in well-ventilated areas; avoid dust generation and direct contact
- Storage Measures: Keep containers tightly closed and stored in a dry environment away from light
First Aid Measures
- Inhalation: Move to fresh air; seek medical attention if respiratory irritation occurs
- Skin Contact: Wash with soap and water; seek medical advice if irritation persists
- Eye Contact: Rinse with water for at least 15 minutes; seek medical care if irritation continues
- Ingestion: Rinse mouth; do not induce vomiting; seek immediate medical help
Firefighting Measures
- Fire Hazards: Combustible solid
- Extinguishing Media: Use water spray, foam, dry chemical, or CO₂
- Special Precautions: Wear full protective gear and self-contained breathing apparatus if involved in fire
- Hazardous Combustion Products: Carbon oxides, nitrogen oxides
Related products
Acid Black 2 Powder
Acid Black 2 Powder is a synthetic anionic disazo dye belonging to the acid dye class, specifically formulated for intense black coloration with excellent light and wash fastness properties. This high-purity powder (100% active) exhibits superior solubility in aqueous solutions, making it particularly suitable for dyeing protein-based fibers like wool, silk, and nylon under acidic conditions. As a chromium-complex dye, it delivers enhanced color depth and improved fastness characteristics compared to non-metalized acid dyes. The powder form ensures precise dosing, consistent batch-to-batch reproducibility, and long-term stability when stored properly. Its molecular structure features sulfonic acid groups that facilitate strong ionic bonding with amino groups in fibers, resulting in vibrant, penetration-rich coloration with minimal bleeding.
Black Five 5 Pigment
Black Five 5 Pigment is a high-quality synthetic pigment known for its intense, deep black coloration and excellent opacity. It is widely used in various industrial applications due to its outstanding color strength, stability, and resistance to heat, light, and chemicals. This pigment offers superior dispersibility in multiple media, making it ideal for use in paints, coatings, plastics, inks, and rubber products.
Black Five (5) Pigment delivers rich black tones with excellent durability, providing long-lasting color performance in demanding environments. Its non-toxic nature and compatibility with a wide range of formulations make it a preferred choice for both industrial and artistic applications.
Black Jawi
Black Jawi is a natural, mineral-rich volcanic sand or powder, traditionally harvested from volcanic regions. Its high content of silica, iron oxides, magnesium, and trace minerals makes it a versatile material for agriculture, construction, cosmetics, and industrial applications. Packaged in 30kg bulk quantities, it is ideal for large-scale projects requiring durability, soil enhancement, or therapeutic properties.
Bright Yellow Dye
Bright Yellow Dye is a high-strength, water-soluble synthetic dye solution designed for vibrant red coloration across various industrial and consumer products. With 20% active dye content, it offers excellent color intensity, easy dispersibility, and compatibility with a wide range of aqueous systems. This versatile dye is widely used in textiles, paper, personal care products, and household cleaning formulations.
Brilliant Blue Dye
Brilliant Blue Dye is a synthetic acid dye known for its bright, vibrant blue coloration and excellent affinity for protein fibers such as wool, silk, and nylon. It is highly soluble in water under acidic conditions, delivering uniform and vivid dyeing results. This dye is widely used in textile dyeing, leather processing, and specialty applications requiring stable and durable blue shades. Brilliant Blue Dye exhibits excellent fastness to washing, light, and perspiration, making it ideal for high-quality fabric and leather products.
Chromosal B
Chromosal B is a specialized chromium-based chemical reagent commonly used in analytical chemistry and laboratory applications. It is typically a chromium salt formulation that serves as a strong oxidizing agent, employed for various testing, purification, and synthesis processes. Chromosal B is valued for its high reactivity, stability in solution, and ability to facilitate oxidative reactions. It is widely used in industrial quality control, chemical synthesis, and wastewater treatment, offering reliable performance in oxidative degradation and metal treatment procedures.
Phytaloc Yamine green
Phytaloc Yamine Green is a specialized green-colored amine-based chemical used primarily as a corrosion inhibitor and pH stabilizer in various industrial and water treatment applications. It offers excellent protection against metal corrosion and scale formation in cooling systems, boilers, and pipelines. This product is formulated for easy handling and compatibility with diverse chemical environments, making it a versatile additive in process industries.
Sulphur Black
Sulphur Black is a synthetic sulfur-based dye renowned for its deep black color and excellent fastness properties, especially on cellulose fibers like cotton. It is widely used in textile dyeing due to its cost-effectiveness and ability to produce dark, durable black shades. Sulphur Black is insoluble in water but applied through a reduction process that allows it to penetrate fibers and form insoluble pigments within the fabric, offering excellent wash and light fastness.

Preservatives(food)
Flavor Enhancers
Acidulants
Sweeteners
Antioxidants
Colorants(food)
Nutraceutical Ingredients (food)
Nutrient Supplements
Emulsifiers
Collectors
Dust Suppressants
Explosives and Blasting Agents
Flocculants and Coagulants
Frothers
Leaching Agents
pH Modifiers
Precious Metal Extraction Agents
Antioxidants(plastic)
Colorants (Pigments, Dyes)
Fillers and Reinforcements
Flame Retardants
Monomers
Plasticizers
Polymerization Initiators
Stabilizers (UV, Heat)
Antifoaming Agents
Chelating Agents
Coagulants and Flocculants
Corrosion Inhibitors
Disinfectants and Biocides
Oxidizing Agents
pH Adjusters
Scale Inhibitors( water)
Antioxidants(cosmetic)
Emollients
Fragrances and Essential Oils
Humectants
Preservatives
Surfactants(cosmetic)
Thickeners
UV Filters
Fertilizers
Soil Conditioners
Plant Growth Regulators
Animal Feed Additives
Biostimulants
Pesticides (Herbicides, Insecticides, Fungicides)
Active Pharmaceutical Ingredients (APIs)
Excipients
Solvents(pharmaceutical)
Antibiotics
Antiseptics and Disinfectants
Vaccine Adjuvants
Nutraceutical Ingredients (pharmaceutical)
Analgesics & Antipyretics
Analytical Reagents
Solvents(lab)
Chromatography Chemicals
Spectroscopy Reagents
microbiology-and-cell-culture-reagents
Molecular Biology Reagents
Biochemical Reagents
Inorganic and Organic Standards
Laboratory Safety Chemicals
Specialty Laboratory Chemicals(Special Laboratory Equipment)
Demulsifiers
Hydraulic Fracturing Fluids
Scale Inhibitors(oil)
Surfactants(oil)
Drilling Fluids
Dyes and Pigments
Bleaching Agents
Softening Agents
Finishing Agents
Antistatic Agents
Admixtures
Waterproofing Agents
Sealants and Adhesives
Curing Compounds
Concrete Repair Chemicals
Anti-Corrosion Coatings
Surfactants(cleaning)
Builders
Enzymes
Solvents (Cleaning)
Fragrances
Electronic Chemicals
Catalysts
Lubricants
Photographic Chemicals
Refrigerants
Automotive chemicals
Pyrotechnic Chemicals
Biodegradable Surfactants
Bio-based Solvents
Renewable Polymers
Carbon Capture Chemicals
Wastewater Treatment Chemicals
Pigments
Solvents(paint)
Specialty Coatings
Binders/Resins
Additives
Driers
Anti-Corrosion Agents
Functional Coatings
Application-Specific Coatings
Leavening Agents
Dough Conditioners
Flour Treatments
Fat Replacers
Decoratives
Preservatives(baking)
Plasticizers & Softeners
Reinforcing Agents
Adhesion Promoters
Vulcanizing Agents
Antidegradants
Blowing Agents
Fillers & Extenders
Accelerators & Retarders