Fluorescent Brightener 378 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 40470-68-6 |
| Product name | Fluorescent Brightener 378 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial Grade |
| Packaging | 25KG/bag500KG/bag1000KG/bag |
| 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 378
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Fluorescent Brightener 378 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Fluorescent Brightener 378
| Industry | Application | Process |
|---|---|---|
| Plastics | Whitening and brightening of plastic products, including polyvinyl chloride (PVC), polypropylene (PP), and polyethylene (PE) | Added prior to melt processing—such as extrusion, injection molding, or calendering—via dry blending or masterbatch incorporation |
| Textile Dyeing & Printing | Whitening treatment of synthetic fibers (e.g., polyester, acetate, nylon) and fabrics | Applied via high-temperature, high-pressure exhaust dyeing or pad dyeing, enabling adsorption onto fiber surfaces or within the fiber structure |
| Inks & Coatings | Whitening of inks, paints, and coatings to enhance whiteness and color vividness | Directly incorporated during grinding and dispersion; leverages light and heat stability to improve gloss |
| Artificial Leather | Whitening and surface refinement of synthetic and artificial leather | Added during finishing processes or applied via surface treatment agents |
Manufacturing Quality Control of Fluorescent Brightener 378
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantitative determination using reverse-phase HPLC with UV detection at 345 nm, calibrated against certified reference standard. |
| Moisture Content | Karl Fischer Titration | Electrochemical titration measuring water content based on the reaction of iodine with sulfur dioxide in a methanol-pyridine medium. |
| Ash Content | Gravimetric Analysis | Residue mass after incineration at 550 C in a muffle furnace, expressed as weight percent of original sample. |
| Heavy Metals (as Pb) | AAS (Flame or Graphite Furnace) | Atomic absorption spectroscopy measuring absorbance of ground-state atoms vaporized in flame or graphite tube. |
| Chloride Content | Potentiometric Titration | Titration with silver nitrate using silver indicator electrode to detect endpoint via potential change. |
| pH of Aqueous Solution | pH Meter Measurement | Electrochemical measurement of hydrogen ion activity in a 1% w/v aqueous dispersion at 25 C. |
| Solubility in Water | Visual Inspection and Filtration | Assessment of complete dissolution and clarity of 0.1 g sample in 100 mL distilled water at 25 C after stirring for 30 min. |
| Organic Impurities (Related Substances) | HPLC-DAD | Separation and detection of structurally related compounds using gradient HPLC with diode-array detection. |
| Bulk Density | Graduated Cylinder Method | Mass of material freely poured into a calibrated cylinder divided by its volume, reported in g/mL. |
| Particle Size Distribution | Laser Diffraction | Analysis of scattered laser light intensity to determine size distribution of dry powder dispersed by air jet. |
| Residue on Ignition | Gravimetric Analysis | Weight loss after heating at 750 C for 30 min; residue calculated as % of initial mass. |
| UV Absorbance Ratio (A345/A275) | UV-Vis Spectrophotometry | Ratio of absorbance at 345 nm (max) to that at 275 nm in standardized DMSO solution, indicating spectral purity. |
Technical Specifications of Fluorescent Brightener 378
| Test Item | Specification |
|---|---|
| Appearance | Green solid |
| Purity | >=98.0% (LC-MS) |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 215–220°C |
| Identification (NMR) | Consistent with structure |
| Heavy Metals | <=10 ppm |
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 378
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Fluorescent Brightener 378
Packaging of Fluorescent Brightener 378
Industrial Fluorescent Brightener 378 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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