Fluorescent Brightener KS-N Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 5242-49-9 |
| Product name | Fluorescent Brightener KS-N |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Industrial GradeMaterial GradeCosmetic GradeFood 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 KS-N
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Fluorescent Brightener KS-N Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Fluorescent Brightener KS-N
| Industry | Application | Process |
|---|---|---|
| Textile Industry | Enhance whiteness and brightness of fiber-based products | Added during textile finishing; applied to fabrics via adsorption or immersion |
| Paper Industry | Improve fluorescent effect and visual whiteness of paper | KSN fluorescent whitening agent incorporated into pulp or coating formulations with uniform mixing |
| Plastics Industry | Improve whiteness and gloss of plastic products | KSN fluorescent whitening agent added to raw materials and thoroughly blended during plastics processing |
| Detergent Industry | Enhance whiteness and brightness of laundered garments | Formulated as an additive with surfactants and other components in detergent formulations |
| Coatings Industry | Increase whiteness and optical performance of coatings | KSN fluorescent whitening agent added during coating production and uniformly dispersed |
Manufacturing Quality Control of Fluorescent Brightener KS-N
| 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 | Volumetric titration with iodine-based reagent to measure water content based on stoichiometric reaction with iodine and sulfur dioxide. |
| Ash Content | Gravimetric Analysis (Ignition at 550 C) | Residue mass after high-temperature incineration measured gravimetrically to determine inorganic impurities. |
| pH of 1% Aqueous Solution | pH Meter Measurement | Electrochemical measurement of hydrogen ion activity in a standardized aqueous dispersion. |
| Heavy Metals (Pb, Cd, Hg, As) | ICP-MS | Multi-element quantification by plasma ionization and mass spectrometric detection with isotopic resolution. |
| Chloride Ion Content | Potentiometric Titration with AgNO3 | Titration using silver nitrate with silver indicator electrode; endpoint detected by potential change due to AgCl precipitation. |
| Organic Impurities (Related Substances) | HPLC-DAD | Separation and identification of structurally related compounds using diode-array detection for spectral confirmation. |
| Solubility in Water | Visual Inspection and Filtration | Assessment of complete dissolution and clarity of 1% w/v solution after defined agitation and standing time. |
| Bulk Density | Graduated Cylinder Method | Mass per unit volume measured by tapping a known mass in a calibrated cylinder to determine volumetric density. |
| Particle Size Distribution | Laser Diffraction | Analysis of light scattering pattern from dispersed particles to calculate size distribution by Mie theory. |
| Color (APHA) | Spectrophotometric Comparison | Measurement of yellowness index or APHA color number using spectrophotometer calibrated against platinum-cobalt standards. |
| Residue on Ignition | Gravimetric Analysis (Ignition at 750 C) | Determination of non-volatile residue after ignition at specified temperature, expressed as percentage of sample mass. |
Technical Specifications of Fluorescent Brightener KS-N
| Test Item | Specification |
|---|---|
| Appearance | Light yellow to green crystalline powder |
| Purity | >=98.5% |
| Total Impurities | <=1.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 248°C - 252°C |
| Identification (IR) | Consistent with reference spectrum |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.3% |
| Color (APHA/Pt-Co) | <=100 |
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 KS-N
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Fluorescent Brightener KS-N
Packaging of Fluorescent Brightener KS-N
Industrial Fluorescent Brightener KS-N 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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