Fluorescent brightener 71 Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 16090-02-1 |
| Product name | Fluorescent brightener 71 |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Pharmaceutical GradeMaterial GradeSpecialty GradeIndustrial 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 71
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk Fluorescent brightener 71 Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of Fluorescent brightener 71
| Industry | Application | Process |
|---|---|---|
| Textiles | Whitening and brightening | Added during textile dyeing or post-treatment processes; absorbs UV light and emits blue light to enhance fabric whiteness and brightness |
| Paper manufacturing | Improving paper whiteness | Incorporated into the pulp during papermaking to enhance visual whiteness and gloss |
| Detergents | Clothing whitening | Formulated as an additive in laundry powders or liquid detergents to improve garment whiteness and cleaning performance |
| Plastic products | Enhancing appearance whiteness | Incorporated into plastic formulations to increase surface whiteness and gloss |
| Medical materials | Improving material appearance | Applied in medical dressings or packaging materials to enhance whiteness and visual cleanliness |
Manufacturing Quality Control of Fluorescent brightener 71
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantifies main component by retention time and UV absorbance against reference standard. |
| Moisture Content | Karl Fischer Titration | Measures water content via coulometric or volumetric reaction with iodine and Karl Fischer reagent. |
| Ash Content | Gravimetric Analysis | Determines inorganic residue after high-temperature incineration and weighing. |
| pH of Aqueous Solution | pH Meter Measurement | Measures hydrogen ion activity in a standardized aqueous suspension using calibrated electrode. |
| Heavy Metals (Pb, Cd, Hg, As) | ICP-OES | Simultaneously quantifies trace metals after acid digestion using plasma excitation and optical emission detection. |
| Chloride Impurity | Potentiometric Titration | Detects chloride ions by titration with silver nitrate using silver indicator electrode. |
| Solubility in Water | Visual Inspection & Filtration | Evaluates complete dissolution in specified volume/temperature water; assessed by clarity and absence of residue. |
| Organic Volatile Impurities | GC-FID | Separates and quantifies residual solvents using capillary column and flame ionization detection. |
| Color (APHA) | Spectrophotometric Comparison | Compares sample solution color intensity to APHA platinum-cobalt standard scale at 430 nm. |
| Particle Size Distribution | Laser Diffraction | Measures size distribution of dry or dispersed particles by analyzing angular scattering pattern of laser beam. |
| Bulk Density | Graduated Cylinder Method | Determines mass per unit volume by pouring material into calibrated cylinder and measuring settled volume. |
| Residue on Ignition | Gravimetric Analysis | Measures non-volatile residue remaining after controlled heating at specified temperature and duration. |
Technical Specifications of Fluorescent brightener 71
| Test Item | Specification |
|---|---|
| Appearance | White to off-white crystalline powder |
| Purity | >=98.5% |
| Water Content (KF) | <=0.5% |
| Melting Point | 218-222°C |
| Total Impurities | <=1.2% |
| Single Impurity | <=0.3% |
| Heavy Metals | <=20 ppm |
| Residue on Ignition | <=0.1% |
| Solubility | Freely soluble in dimethylformamide; slightly soluble 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 71
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of Fluorescent brightener 71
Packaging of Fluorescent brightener 71
Industrial Fluorescent brightener 71 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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