Typical specifications
- Claimed purity: >=99.5%, confirm test method
- Appearance: yellow to yellow-green powder
- Check CAS: page lists 7128-64-5; OB-1 often differs
- Confirm formula and molecular weight mismatch
- Volatiles claimed <=0.50%
Needs CAS and spec verificationBack to sourcing hubTextile / Paper
Optical Brightener OB-1 for Plastics and Polyester
Candidate listing for optical brightener OB-1 used in plastics and polyester applications. Buyer should verify CAS identity, formula, purity basis, heat resistance data, impurity profile, packing, export documents, and DG status before RFQ or sampling.
Quick buying facts
Identify the grade, package, and import market before comparing suppliers.
Use this page to check the product identity, common specification points, document scope, package notes, and destination-market questions before sending a China sourcing request.
Claimed purity: >=99.5%, confirm test methodFluorescent brightener / optical brightener for plasticsNeeds CAS and spec verification
Target buyers
- Plastic masterbatch producers
- Polyester fiber and textile processors
- Coatings and additives distributors
- Compounders using whitening additives
Documents to check
- CAS number, grade, assay, and impurity profile
- SDS, COA, TDS, HS code, and transport classification
- Destination-market import documents before supplier matching
Packing notes
- Listed packs: 25 kg drum, 10 kg bag, 15 kg bag
- Ask inner liner and moisture barrier details
- Confirm palletization and export carton/drum marks
- Request sample pack size and seal photos
Applications and sourcing options
Check whether this product fits the buyer's actual application.
Clear application, grade, package, and document notes help separate real sourcing demand from a vague price check.
Common applications
- High-temperature plastic molding brightening
- Polyester fiber and blend whitening
- ABS, PS, HIPS, PA, PC, PP, EVA, rigid PVC trials
- Additive qualification for masterbatch lines
Sourcing options
- Request pre-shipment COA per batch
- Order lab sample before bulk RFQ
- Compare against verified OB-1 CAS suppliers
- Ask for third-party test report if needed
Compliance notes
- Confirm SDS, COA, TDS, and export invoice readiness
- Verify HS code 3204200000 with broker
- Ask DG/non-DG transport classification
- Check destination import rules for optical brighteners
- No regulatory guarantee without local review
Buyer search paths
Related sourcing terms
These terms support long-tail discovery while keeping the page focused on useful product and China export buying context.
optical brightener OB-1fluorescent brightener OB-1plastic whitening agentpolyester brightenerCAS 1533-45-5CAS 7128-64-5
Related product options
Build a broader quote package from adjacent options.
Buyers often compare neighboring grades, forms, or route options before sending one consolidated RFQ.
Fluorescent whitening agent / optical brightener for polymer and fiber applications
Optical Brightener OB-1, CAS 1533-45-5, Fluorescent Whitening Agent for Plastics and Fibers
Sourcing candidate for Optical Brightener OB-1, CAS 1533-45-5, offered as a yellow-green crystalline powder for plastics, polyester fiber, coatings, inks, and related polymer applications. Buyers should verify CAS identity, grade, assay method, melting range, particle size, fluorescence shade, impurity profile, COA consistency, export documentation, and transport classification before RFQ or sampling.
Fluorescent brightener / optical brightening agent, industrial grade
Industrial Grade Fluorescent Brightener OB-1 for Textile, Plastic, and Coating Applications
Industrial grade Fluorescent Brightener OB-1 candidate from a China-based supplier, positioned for textile auxiliary, plastic auxiliary, and coating auxiliary use. Source page lists purity at 99.5% minimum, yellow to yellow-green powder appearance, formula C26H26N2O2S, HS code 3204200000, and packing options including 25 kg drums and 10 kg or 15 kg bags. CAS number is not clearly provided in the extracted listing and should be confirmed against COA, SDS, and buyer specification before RFQ or sampling.
Chemical auxiliary / fluorescent whitening agent / optical brightener
Optical Brightener CBS-X Powder CAS 27344-41-8 for Paper, Detergent, Plastics and Textile Sourcing
Buyer-facing sourcing candidate for Optical Brightener CBS-X / fluorescent whitening agent listed under CAS 27344-41-8. Suitable RFQ focus includes CAS confirmation, grade and assay basis, whiteness or fluorescence performance data, impurity profile, application match for paper or detergent systems, export documentation, and 25 kg drum packing availability.
Functional flame-retardant protective textile fabric
EN 11611 Flame-Retardant Modacrylic/Cotton/Antistatic Fleece Fabric, 240 GSM
Candidate flame-retardant double-sided fleece fabric for industrial PPE textile sourcing. Buyer checks should focus on composition confirmation, EN ISO 11611 / EN ISO 11612 certificate validity, antistatic performance documentation, color fastness, GSM tolerance, width, roll packing, MOQ, and export documentation readiness.
RFQ questions before supplier matching
Turn this product into a quote request.
Share target market, quantity, packaging scope, artwork status, delivery destination, and required documents so CHN Chemicals can prepare a cleaner supplier comparison.
- What exact CAS and product code will appear on COA?
- Can you provide HPLC or GC purity and impurity limits?
- What heat resistance data supports plastic molding use?
- Is product suitable for ABS, PP, PC, PA, PET, PVC?
- What is MOQ, lead time, and sample availability?
- Confirm SDS, COA, TDS, and export invoice readiness
- Verify HS code 3204200000 with broker
- Ask DG/non-DG transport classification
- Check destination import rules for optical brighteners
- No regulatory guarantee without local review
Send the product page with your target quantity and market. A sourcing manager can then confirm sample options, supplier fit, packaging details, and open document gaps.