Import Optical Brightener Ksn(C.I. 368) — Buy in wholesale FOB from Supplier in China
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Optical Brightener KSN(C.I. 368)
The optical brightener KSN (C.I. 368) supplied by Changsha Lianda Chemical Co., Ltd. is a fluorescent whitening agent based on a benzoxazole derivative. It is supplied as a yellow crystalline powder with a reported purity of 99.95 %. The material carries CAS 5242‑49‑9, molecular formula C29H20N2O2, and melts between 269 °C and 271 °C. It is packaged in 20 kg cartons, 25 - 30 kg fiber drums with PE liner, or to customer‑specified formats.
The compound’s ash content is limited to 0.1 % and volatile matter to 0.5 %, meeting typical specifications for specialty additives used in plastics and textile processing. Its fineness of 120 mesh aligns with industry standards for uniform dispersion in polymer matrices. In the broader market, similar benzoxazole brighteners are classified as Class II optical brighteners and are expected to retain fluorescence after multiple processing cycles.
Users add the brightener at 0.01 - 0.03 % of the polymer weight, equivalent to 10 - 30 g per 100 kg batch, to achieve strong UV‑induced whiteness in PVC, PE, PP, PS, ABS, SAN, CA, PA, PMMA, acrylic resin, polyester fibre and coating formulations. Importers typically target manufacturers of thermoplastic components, fibre producers and paint formulators who require stable colour retention. Buyers should confirm the exact packaging size, minimum order quantity and Incoterms directly with the supplier, as these details are not disclosed in the listing. Payment terms and lead times are also subject to negotiation with Changsha Lianda Chemical.
| CAS Number | 5242‑49‑9 |
| Molecular Formula | C29H20N2O2 |
| Appearance | Yellow crystalline powder |
| Purity | 99.95 % |
| Melting Point | 269 °C - 271 °C |
| Ash Content | 0.1 % |
| Volatile Content | 0.5 % |
| Particle Size (Fineness) | 120 mesh |
| Typical Storage Temperature | typical -20 °C to 30 °C |
| Typical Shelf Life | typical 24 months |
Changsha Lianda Chemical Co., Ltd. is located at No.10 Luositang Road, No.259 South Mawangdui Road, Changsha 410001, Hunan, China. It is classified as an imported‑tier supplier and holds a harbor trust tier within the platform’s verification system. The company’s profile shows a response rate of 0 % and no recorded average response time, indicating that enquiries may require follow‑up.
The firm lists its primary activity as the production and export of specialty chemical additives, including optical brighteners for plastics and textiles. No additional certifications, such as ISO or REACH compliance, are documented in the public data, so buyers should request copies if required. The supplier states that it can accommodate custom packaging based on client specifications.
Optical Brightener KSN (C.I. 368) is a high-performance fluorescent whitening agent with CAS number 5242-49-9 and molecular formula C29H20N2O2. Widely used in plastic, synthetic fiber, and coating industries, it provides exceptional whitening and brightening effects under UV light. This chemical is traded globally as a specialty additive, with demand driven by manufacturers in the plastics conversion and textile sectors seeking superior whiteness retention in finished goods.
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Sourcing Optical Brightener KSN(C.I. 368) from Changsha Lianda Chemical Co., Ltd. - China Import Guide
Before placing an order, importers should verify the supplier’s legal registration, confirm the exact chemical grade, and request a recent analysis certificate that shows the 99.95 % purity, ash and volatile contents. It is also advisable to obtain a material safety data sheet to ensure compliance with local regulations. Checking the packaging options and any minimum order requirements will prevent unexpected shipping costs.
Shipping of the brightener is generally arranged in sealed cartons or fiber drums; buyers need to confirm the preferred Incoterm, such as FOB Changsha port or CIF Shanghai, and discuss lead‑time expectations, which are not disclosed in the public listing. The supplier’s response rate is currently zero, so establishing a clear point of contact early can reduce delays. Payment methods commonly include T/T against documents, but this should be agreed in the contract.
Upon receipt, the powder should be inspected for moisture content and any discoloration that could indicate degradation; a quick melt‑point test can confirm the product’s integrity. Importers often arrange an independent third‑party inspection to verify purity and particle size before bulk release. Retaining the supplier’s MSDS and analytical report will simplify customs clearance and downstream quality control.
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30 suppliersBuy Optical Brightener Ksn(C. in Bulk — Verified Supplier in China
When sourcing Optical Brightener Ksn(C.I. 368) for your business, securing the right balance of quality and cost is essential. Changsha Lianda Chemical Co., Ltd., a verified supplier based in China, offers this product with key specifications including Industrial Grade, C.I. 368 / KSN Type, Min. 98% active content, C29H20N2O2, and Yellow crystalline powder. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $1530/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 3204.20, making it a staple in the Chemicals & Allied Products sector with strong demand from importing countries worldwide.
Optical Brightener Ksn(C. Specifications, Trade Terms & Pricing
Importing Optical Brightener Ksn(C. requires careful attention to shipping logistics, customs compliance, and secure payment terms. Changsha Lianda Chemical Co., Ltd. offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. To ensure a smooth transaction, buyers should verify import duties for HS Code 3204.20 in their destination country. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading online B2B marketplace designed to make cross-border trade secure and efficient.
About Changsha Lianda Chemical Co., Ltd. — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this Optical Brightener Ksn(C. has been verified on our platform. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of verified manufacturers and exporters across 200+ countries. Explore similar products in the Chemicals & Allied Products category and connect with top-tier exporters on our comprehensive B2B marketplace. Start your sourcing journey today.
Import Optical Brightener Ksn(C. — Shipping, Logistics & Customs
Importing Optical Brightener Ksn(C. requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties for HS Code 3204.20 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
Frequently Asked Questions About Optical Brightener Ksn(C.
What is the wholesale price of Optical Brightener Ksn(C.I. 368)?
The current listed wholesale price for Optical Brightener Ksn(C.I. 368) from Changsha Lianda Chemical Co., Ltd. is $1530/Bags on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Changsha Lianda Chemical Co., Ltd. through EximNext.
What is the Minimum Order Quantity (MOQ) for Optical Brightener Ksn(C.?
The supplier, Changsha Lianda Chemical Co., Ltd., has set a Minimum Order Quantity (MOQ) of 1 Bags for Optical Brightener Ksn(C.. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Optical Brightener Ksn(C.I. 368)?
For international shipping and customs clearance, Optical Brightener Ksn(C.I. 368) is classified under HS Code 3204.20. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Optical Brightener Ksn(C. from China?
To import Optical Brightener Ksn(C. from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Changsha Lianda Chemical Co., Ltd.. Ensure you have the necessary import licenses for Chemicals & Allied Products products in your destination country.
Is Changsha Lianda Chemical Co., Ltd. a verified supplier?
Yes, Changsha Lianda Chemical Co., Ltd. is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
What are the key specifications of Optical Brightener Ksn(C.I. 368)?
The key specifications for Optical Brightener Ksn(C.I. 368) supplied by Changsha Lianda Chemical Co., Ltd. include Industrial Grade, C.I. 368 / KSN Type, Min. 98% active content, C29H20N2O2, and Yellow crystalline powder. For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
What packaging options are available for bulk orders of Optical Brightener Ksn(C.?
Changsha Lianda Chemical Co., Ltd. offers Optical Brightener Ksn(C. with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Optical Brightener Ksn(C. the most?
Optical Brightener Ksn(C. is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Changsha Lianda Chemical Co., Ltd. through our platform.
What certifications does this Optical Brightener Ksn(C. supplier hold?
Changsha Lianda Chemical Co., Ltd. maintains international quality certifications. These ensure that the Optical Brightener Ksn(C. meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Optical Brightener Ksn(C.I. 368) on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Changsha Lianda Chemical Co., Ltd. will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
What payment methods are accepted?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Changsha Lianda Chemical Co., Ltd..
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