4,4'-Stilbenedicarboxylic acid Bulk Supply for Industrial Use
China Factory Direct
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| CAS number | 100-31-2 |
| Product name | 4,4'-Stilbenedicarboxylic acid |
| Stock | Stock readily available; annual supply capacity exceeding 1,000 tons. |
| Grade | Material GradeSpecialty GradeIndustrial 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 4,4'-Stilbenedicarboxylic acid
Post-sale: Full documentation is provided.
To request documents, please contact us via email at sales@GRchemical.com.
Bulk 4,4'-Stilbenedicarboxylic acid Supplier from China
17+ years in chemical exports.Fully compliant, reliable supply.Your B2B partner in bulk chemical procurement.
Industrial Applications of 4,4'-Stilbenedicarboxylic acid
| Industry | Application | Process |
|---|---|---|
| Chemicals | Intermediate for fluorescent whitening agents | Used in the synthesis of fluorescent whitening agents CBS, 31#, etc., via esterification, condensation, and other reactions to produce high-performance whitening agents |
| Textiles | Fabric whitening and brightening | Applied as a component of fluorescent whitening agents in dyeing and finishing processes for cotton, polyester, and other fibers to enhance whiteness and gloss |
| Plastics | Whitening of plastic products | Incorporated into polyester, polyethylene, and other resins and uniformly dispersed during processing to improve product whiteness |
| Papermaking | Paper whitening | Added in the wet end or applied during surface sizing of premium paper grades to enhance blue-light emission and improve whiteness and brightness |
| Coatings | Coating whitening and modification | Added as a functional additive to water-based or solvent-based coating systems to improve visual whiteness and optical performance |
Manufacturing Quality Control of 4,4'-Stilbenedicarboxylic acid
| Detection Item | Common Analytical Method | Method Overview |
|---|---|---|
| Assay (Purity) | HPLC-UV | Quantifies main component by UV absorption at specific wavelength using reverse-phase chromatography with calibrated standard. |
| Related Substances | HPLC-UV | Detects and quantifies structurally similar impurities based on retention time and peak area relative to main peak. |
| Residual Solvents | GC-FID | Separates and quantifies volatile organic solvents using flame ionization detection after headspace or direct injection. |
| Water Content | Karl Fischer Titration | Measures water via coulometric or volumetric titration where iodine reacts stoichiometrically with water in pyridine/methanol medium. |
| Heavy Metals | ICP-OES | Determines total heavy metal content (e.g., Pb, Cd, Hg, As) by atomic emission spectroscopy after acid digestion. |
| Chloride Impurity | Ion Chromatography | Separates and quantifies chloride ions using suppressed conductivity detection after anion exchange separation. |
| Sulfate Impurity | Ion Chromatography | Separates and quantifies sulfate ions using suppressed conductivity detection after anion exchange separation. |
| Ash Content | Gravimetric Analysis | Measures inorganic residue remaining after high-temperature incineration at 500-600 C. |
| pH of Aqueous Suspension | pH Meter | Measures hydrogen ion activity in a standardized aqueous suspension (e.g., 1% w/v in water). |
| Melting Point | Capillary Melting Point Apparatus | Determines temperature range at which solid transitions to liquid, indicating purity and identity. |
| Appearance | Visual Inspection | Evaluates physical state, color, and presence of foreign particles under controlled lighting against standard reference. |
| Particle Size Distribution | Laser Diffraction | Measures size distribution of dry powder by analyzing angular scattering pattern of laser beam passing through dispersed sample. |
Technical Specifications of 4,4'-Stilbenedicarboxylic acid
| Test Item | Specification |
|---|---|
| Appearance | Yellow solid |
| Purity | >=98.0% (LC-MS) |
| Melting Point | 275-279°C |
| Total Impurities | <=2.0% |
| Single Impurity | <=0.5% |
| Water Content (KF) | <=0.5% |
| Acid Value (mg KOH/g) | 410-430 mg KOH/g |
| Residue on Ignition | <=0.1% |
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 4,4'-Stilbenedicarboxylic acid
| CAS/Product ID | *Required fields | |
| Lot/Batch Number | *Required fields | |
NMR Spectra of 4,4'-Stilbenedicarboxylic acid
Safety Information of 4,4'-Stilbenedicarboxylic acid
| Pictograms |  |
| Signal Word | Warning |
| Safety Data Sheet | |
Packaging of 4,4'-Stilbenedicarboxylic acid
Industrial 4,4'-Stilbenedicarboxylic acid 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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