Fluorescent Brightener 185 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 2866-43-5 |
| Product name | Fluorescent Brightener 185 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeIndustrial GradeCosmetic GradeFood Grade |
| Packaging | 25L/drum200L/drum1000L/IBC |
| Sample | Test Samples Available (Click to Request Samples) |
| COA | View COA |
| Price | Get Quote |
| Supply Type | Bulk / Contract manufacturing / OEM |
| Shipping | FCL / LCL available |
| Payment Terms | Support FOB \ CIF \ EXW quotations, and accept Letter of Credit (L/C). |
| Manufacturer | Greenrock Chemical(China Factory) |
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Documents We Provide for Fluorescent Brightener 185
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Fluorescent Brightener 185 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Fluorescent Brightener 185
| Industry | Application | Process |
|---|---|---|
| Textile Industry | Enhancing fabric whiteness and brightness | Aqueous solution of Fluorescent Brightener 185 is added during dyeing or finishing; fabric is treated via padding or dip application to adsorb the brightener onto fiber surfaces, where it emits blue-violet fluorescence under UV excitation to counteract yellowish tones and improve perceived whiteness |
| Paper Industry | Improving paper appearance whiteness | Fluorescent Brightener 185 is introduced into the pulp slurry during late-stage bleaching or papermaking; it is uniformly dispersed via the wet-end addition system to enhance the paper’s visual whiteness and gloss under natural light |
| Plastics Industry | Whitening plastic products such as polyvinyl chloride (PVC) and polystyrene (PS) | Fluorescent Brightener 185 is blended with resin and other additives prior to plastic processing; it is uniformly dispersed throughout the material during thermal forming processes—including injection molding and extrusion—to improve product color appearance |
| Detergent Industry | Acting as a whitening agent in laundry detergents | Fluorescent Brightener 185 is incorporated into liquid or powder detergent formulations; it deposits onto fabrics during washing cycles, and repeated use helps maintain fabric brightness |
Manufacturing Quality Control of Fluorescent Brightener 185
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination using reverse-phase HPLC with UV detection at 345 nm, based on peak area comparison against certified reference standard. |
| Moisture Content | Karl Fischer Titration | Electrochemical titration measuring water content via reaction of iodine with sulfur dioxide in pyridine-methanol medium. |
| Ash Content | Gravimetric Analysis | Residue mass after incineration at 550 degC, expressed as percentage of original sample weight. |
| Heavy Metals (as Pb) | AAS | Atomic absorption spectroscopy measurement of lead content after acid digestion and matrix matching. |
| Chloride Content | Potentiometric Titration | Titration with silver nitrate using silver electrode to detect endpoint based on potential change. |
| pH of Aqueous Solution | pH Meter Measurement | Electrochemical measurement of hydrogen ion activity in a 1% w/v aqueous dispersion. |
| Solubility in Water | Visual Inspection | Qualitative assessment of complete dissolution in distilled water at 25 degC with gentle agitation. |
| Organic Volatile Impurities | GC-FID | Gas chromatographic separation followed by flame ionization detection to identify and quantify residual solvents. |
| Particle Size Distribution | Laser Diffraction | Measurement of scattered laser light intensity to calculate volume-based particle size distribution. |
| Color Value (APHA) | UV-Vis Spectrophotometry | Absorbance measurement at 430 nm in 0.1% w/v solution, compared to APHA platinum-cobalt standard scale. |
| Thermal Stability | TGA | Mass loss monitoring under nitrogen atmosphere from 25 to 600 degC at 10 degC/min heating rate. |
| Bulk Density | Graduated Cylinder Method | Mass of material freely poured into calibrated cylinder divided by its settled volume. |
Technical Specifications of Fluorescent Brightener 185
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 365-370°C (decomposes) |
| Total Impurities | <=1.5% |
| Single Impurity | <=0.5% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.3% |
| Solubility | Soluble in dimethylformamide and acetone; practically insoluble in water |
Specifications vary by industry. Reach out to our technical experts for a COA tailored specifically to your application. Email:selse@GRchemical.com
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Download COA of Fluorescent Brightener 185
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Fluorescent Brightener 185
Packaging of Fluorescent Brightener 185
Industrial Fluorescent Brightener 185 Procurement FAQ
1. How do you ensure product quality consistency?
We rely on a mature China-based manufacturing system and implement strict batch control and quality inspection for every shipment. Our production process complies with ISO 9001 standards, and a COA is provided for each batch to ensure consistent and reliable quality.
2. Do you offer competitive pricing for bulk orders?
Yes, as a China-based manufacturer and bulk supplier, we provide tiered pricing based on order volume. We support FOB and CIF quotations, as well as L/C payment terms for large transactions to meet international trade requirements.
3. Can you support large-volume or long-term supply?
We have stable production capacity and a well-established supply chain, enabling continuous bulk supply. We support ton-level and container-level orders, as well as long-term cooperation projects.
4. What is your typical lead time?
For in-stock products, shipment can be arranged within 1–3 days. For bulk packaging or customized orders, lead time depends on the specific quantity and production schedule.
5. What documents do you provide?
We can provide complete documentation upon request, including COA, SDS, TDS, and other compliance certificates, meeting industrial procurement and export requirements.
6. Can you customize product specifications or packaging?
Yes, we support customization of parameters such as purity, impurities, residual solvents, and heavy metals. We also offer various bulk packaging options, including 25kg bags, drums, and IBC tanks, suitable for industrial applications and transportation.
7. What shipping options do you support?
We support both FCL (Full Container Load) and LCL (Less than Container Load) shipments, and can flexibly arrange logistics solutions based on order size to meet bulk chemical export needs.
8. Do you provide technical or application support?
Yes, we provide basic application guidance and technical support based on industry experience to help customers optimize product usage.
9. How do you handle compliance and export regulations?
We are familiar with international trade and export regulations, ensuring all products comply with relevant requirements. We also provide complete documentation to support smooth customs clearance and global delivery.
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