By 2026, the Rhodamine B market is getting a bit more transparent, but buyers around the world still run into uneven pricing and supplier info that doesn't always line up. Reports from Grand View Research and Mordor Intelligence point to steady demand across dyes, pigments, lab reagents, and specialty chemical uses. Their wider dyes and pigments coverage also flags pressure from energy costs, environmental rules, and shifting regional manufacturing. And when those factors move, prices can move fast.
But price isn't the whole story. If you're comparing options, you should really look at purity, grade, batch size, packaging, MOQ, and delivery terms. A 25-kg sealed drum might seem cheaper than smaller packs, but storage and customs can quietly add to the final bill. Freight matters, too — often more than people expect.
ChemAnalyst's price-trend coverage and S&P Global Commodity Insights data can give useful context, though regional benchmarks won't always match what a supplier quotes you. Ask for a current Certificate of Analysis, Safety Data Sheet, batch number, and manufacturing date. ISO-based quality systems can help a supplier look credible, but certification alone doesn't guarantee every batch is consistent. That's an easy point to miss.
This guide compares leading Rhodamine B suppliers, indicative 2026 price ranges, order conditions, and sourcing risks. It keeps an eye on documented quality, traceability, responsible handling, and compliance with the chemical rules that apply. Still, verify supplier claims on your own. Market data can lag behind real transactions. And yeah, that's the uncomfortable part.
What Is Rhodamine B and Where Is It Commonly Used?
Rhodamine B is a synthetic xanthene dye with a vivid red-violet appearance. In solution, it can show strong fluorescence under suitable light. This makes it useful for laboratory tracing, fluorescence microscopy, and analytical chemistry. Researchers may use it to observe fluid movement through clear channels or identify staining patterns in prepared samples.
Its industrial role varies by region and application. Some technical users work with it in approved textile, paper, polymer, or research formulations. However, a bright color does not prove purity. Rhodamine B is not a general-purpose food, cosmetic, or medical ingredient. Product suitability depends on grade, formulation, exposure controls, and local requirements. Its boundaries are less tidy than many product pages suggest.
Tips: Ask suppliers for a current SDS, certificate of analysis, batch number, and stated grade. Check identity, assay, moisture, and packaging details before purchase. Store the material in a sealed container, away from heat, light, and incompatible chemicals. Use gloves, eye protection, and suitable ventilation. I would also compare test results from more than one batch, because small differences can affect fluorescence performance.
| Data Dimension | Rhodamine B Information | Buyer and Supplier Relevance |
|---|---|---|
| Chemical identity | Rhodamine B is a synthetic xanthene dye and a basic, cationic fluorescent colorant. | Buyers should specify the chemical identity and intended application because product grades can differ in purity, shade strength, and impurity profile. |
| CAS Registry Number | 81-88-9 | Use the CAS number when requesting quotations, checking customs documents, and comparing supplier specifications. |
| Chemical formula | C28H31ClN2O3 | The formula helps distinguish Rhodamine B from related rhodamine dyes and other fluorescent colorants. |
| Molecular weight | 479.01 g/mol | Important for laboratory preparation, molar-concentration calculations, and analytical work. |
| Colour Index reference | Colour Index 45170 | Useful for textile, paper, printing, and dye-industry documentation. |
| Physical appearance | Typically supplied as a green to reddish-violet crystalline powder, depending on grade and particle form. | Colour and physical form should be checked against the certificate of analysis before acceptance. |
| Water behaviour | It forms a red to pink solution in water; apparent solubility can vary with temperature, pH, particle size, and product grade. | Ask for a product-specific solubility specification rather than relying only on a general catalogue value. |
| Fluorescence | Rhodamine B shows strong red-pink fluorescence, with its optical response affected by solvent, concentration, pH, and light exposure. | For fluorescence or tracing work, buyers should request excitation/emission data and an application-specific purity grade. |
| Common industrial uses | Textile dyeing, paper coloration, inks, selected plastics and coatings, and laboratory staining or fluorescence demonstrations. | Industrial users normally purchase technical or industrial dye grades in kilogram or drum quantities. |
| Common laboratory uses | Fluorescence demonstrations, microscopy-related staining, analytical method development, and tracer research. | Laboratory buyers generally require higher documented purity, smaller packaging, and stronger batch traceability. |
| Food and cosmetic suitability | Rhodamine B should not be treated as an approved food colourant. Its use in food, beverages, pharmaceuticals, or cosmetics must be assessed under applicable local regulations. | Request regulatory declarations and an SDS before considering any consumer-facing application. |
| Typical supplier channel | Direct dye manufacturers, chemical-export distributors, laboratory reagent distributors, and custom-packaging suppliers. | Direct manufacturers usually offer the lowest bulk price, while distributors generally provide smaller minimum order quantities and faster regional delivery. |
| Industrial dye grade price | Indicative 2026 bulk range: approximately USD 6–20 per kg for orders of 25 kg or more, depending on purity, shade strength, packaging, origin, and shipment terms. | Use this range only for preliminary budgeting. Confirm the current quotation, minimum order quantity, Incoterms, and freight charges directly with the supplier. |
| Higher-purity technical grade price | Indicative 2026 range: approximately USD 18–60 per kg for documented higher-purity material in larger packs. | Pricing increases when the supplier provides tighter assay limits, detailed impurity data, batch testing, and export documentation. |
| Laboratory or analytical grade price | Indicative 2026 range: approximately USD 40–250 per kg equivalent; small bottles can have a substantially higher unit price. | Compare assay, packaging size, certificate of analysis, safety documentation, and lot traceability rather than comparing price alone. |
| Typical minimum order quantity | Laboratory supply: commonly 10 g–1 kg. Industrial supply: commonly 25 kg or more, with some suppliers offering 5–10 kg trial orders. | Trial quantities are useful for shade matching, solubility testing, and regulatory review before a full production order. |
| Packaging options | Small quantities are commonly packed in sealed bottles or bags; bulk quantities may use lined fibre drums, plastic drums, or export cartons. | Specify moisture protection, inner-liner material, net weight, palletization, and dangerous-goods documentation when required. |
| Documents to request | Certificate of analysis, safety data sheet, technical data sheet, batch number, country of origin, packing list, and relevant regulatory declaration. | These documents help verify identity, assess handling requirements, and support customs clearance and quality control. |
| Storage guidance | Store tightly closed in a cool, dry, well-ventilated area, protected from direct sunlight, moisture, incompatible materials, and unnecessary heat. | Follow the supplier’s SDS and local workplace-safety requirements for exact storage and handling controls. |
| Key purchasing risks | Misidentified dye, inconsistent colour strength, excessive moisture, inadequate batch documentation, unsuitable purity, and regulatory non-compliance. | Reduce risk by approving a sample, testing identity and assay, defining acceptance criteria, and using a written specification in the purchase contract. |
| Recommended quotation fields | CAS 81-88-9, grade, assay or purity, colour strength, moisture limit, package size, minimum order quantity, lead time, destination, Incoterms, and payment terms. | Providing these details allows global buyers to obtain comparable quotations from multiple non-branded suppliers. |
RHODAMINE B 540% INCENSE DYES: Uses, Benefits, Selection, and Safe Handling Guide
Rhodamine B Extra 540%, also known as Rhodamine 540%, Basic Violet 10, or Rhodamine B Extra 500%, is a vivid pink-red dye valued for its strong color and fluorescence. It is commonly selected for incense and mosquito-coil formulations when a bright, recognizable shade is desired. It can also be used in paper dyeing, producing a clear, lively pink that suits decorative and traditional applications. In some markets, including Vietnam, Taiwan, and Malaysia, rhodamine-based colors are associated with incense and ceremonial paper products.
When selecting this dye, consider shade strength, batch consistency, particle form, solubility, and compatibility with the intended material. A small trial blend can help determine the required dosage and final color before full production. Users should review the supplier’s technical and safety documentation, wear suitable gloves and eye protection, avoid creating dust, and work in a well-ventilated area. The powder should never be inhaled or consumed, and it should be kept in a clearly labeled container away from food, children, and unauthorized users. For incense or coil applications, only use it in properly controlled formulations and follow local requirements for coloring agents, finished products, emissions, and waste disposal.
FAQS
Confirm the chemical name, CAS number, molecular formula, and stated purity. Check the assay, moisture content, residue, and testing methods. Small differences can matter.
Request a current certificate of analysis, safety data sheet, batch number, and technical data sheet. The batch number should match the sample and shipping documents. Documentation is essential.
Ask for a recent sample and an independent test report before placing a large order. Testing may confirm identity, moisture, and residual impurities. Product images prove very little.
Choose sealed, clearly labeled containers that limit moisture exposure and contamination. Check the package size, material, and storage instructions. Labels should remain readable.
Compare at least three written quotations using identical specifications. Consider purity, package size, testing depth, freight, currency changes, and order volume. The cheapest offer may not be cheapest overall.
Manufacturers may suit bulk orders and lower unit costs. Distributors may offer faster delivery and smaller minimum quantities. Laboratory suppliers often provide stronger traceability, but prices can be higher.
A small pilot batch can reveal solubility, handling, or packaging problems early. It adds time. That may still be worthwhile.
Confirm light sensitivity, temperature limits, shelf life, and recommended storage conditions. Verify permitted use and import requirements in the destination market. No checklist catches everything, so keep clear records and review unexpected results.
Conclusion
Rhodamine B is a synthetic fluorescent dye commonly used in approved industrial, laboratory, textile, paper, printing, and analytical applications. Buyers should review purity, color strength, solubility, moisture content, particle form, batch consistency, packaging, shelf life, and test methods before purchasing. Global supply options may include manufacturers, authorized distributors, specialty chemical traders, and laboratory reagent providers, each offering different advantages in quality control, order volume, lead time, and technical support.
In 2026, Rhodamine B prices are influenced by raw material costs, purity grade, production scale, packaging, freight, currency changes, and regional demand. Purchasers should also confirm applicable regulations, safety classifications, SDS, certificates of analysis, traceability records, and import or export documentation. A reliable buying process includes comparing multiple quotations, verifying supplier qualifications, requesting representative samples, checking independent quality data when appropriate, clarifying payment and delivery terms, and confirming that the intended use complies with all relevant national and international laws.
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