https://www.koyonchem.com/phase-transfer-catalysts/quaternary-ammonium-salt/tetrabutylammonium-bromide.html https://www.koyonchem.com/uploads/202442156/small/tetrabutylammonium-bromide58b7877f-06c1-4ef3-89f1-7c5a076c73b3.jpg Tetrabutylammonium Bromide Tetrabutylammonium Bromide 99.0% (CAS 1643-19-2) is a widely used phase transfer catalyst, commonly used in organic synthesis, esterification reactions, alkylation reactions, and other fields. Our production capacity is 2,000 MT/YEAR. https://www.koyonchem.com/uploads/42156/video/2024120214163587ea7.mp4 2024-05-22T14:37:27+08:00 yes no https://www.koyonchem.com/electronic-grade-epoxy-resin/bisphenol-type-epoxy-resin/bisphenol-a-type-liquid-low-viscosity-epoxy.html https://www.koyonchem.com/uploads/42156/small/bisphenol-a-type-liquid-low-viscosity-epoxy0449f.jpg Bisphenol A-type liquid low-viscosity epoxy resin Bisphenol A-type liquid low-viscosity epoxy resin （CAS NO. 1675-54-3）: As a general liquid epoxy resin, this product has lower chlorine content compared to those of ordinary products. It ’ s available for electronic packaging, bonding, composite materials and other fields, to provide more reliable stability for electronic appliances. https://www.koyonchem.com/uploads/42156/video/20240712154302d50b9.mp4 2024-05-22T16:06:26+08:00 yes no https://www.koyonchem.com/electronic-grade-epoxy-resin/bisphenol-type-epoxy-resin/bisphenol-a-type-liquid-high-viscosity-epoxy.html https://www.koyonchem.com/uploads/42156/small/bisphenol-a-type-liquid-high-viscosity-epoxy5c61b.jpg Bisphenol A Type Liquid High Viscosity Epoxy Resin Bisphenol A Type Liquid High Viscosity Epoxy Resin(CAS 1675-54-3): The A-185 series epoxy resin is a liquid bisphenol A type epoxy resin. It is a general epoxy resin with uniform properties, low crystallization tendency, and extremely low chlorine content, which is precisely controlled. The product also has a light color. It is primarily used in electronic packaging, composite materials, electronic inks, and other applications. https://www.koyonchem.com/uploads/42156/video/20240712154455d448b.mp4 2024-05-22T16:09:33+08:00 yes no https://www.koyonchem.com/polyols/glycol-and-tetraol/propylene-glycol.html https://www.koyonchem.com/uploads/42156/page/small/propylene-glycol70512.jpg Propylene Glycol Propylene glycol (CAS 57-55-6): We offer three grades: industrial grade, USP grade, and food additive grade. Its content exceeds 99.5%, with minimal impurities, and the production process is designed to minimize side reactions, ensuring higher stability. https://www.koyonchem.com/uploads/42156/video/202409021557510a445.mp4 2024-05-23T08:16:55+08:00 yes no https://www.koyonchem.com/formate-salts/calcium-formate/industrial-grade-calcium-formate.html https://www.koyonchem.com/uploads/42156/small/industrial-grade-calcium-formate5df14.jpg Industrial Grade Calcium Formate Calcium formate 98% (Industrial grade)is a calcium salt of formic acid with a molecular weigh of 130.0, CAS number 544-17-2, and EINECS number 208-863-7. The appearance is usually a white to yellowish crystal or powder, the specific color may vary slightly depending on the purity and manufacturing process. https://www.koyonchem.com/uploads/42156/video/20240711144520c432a.mp4 2024-05-23T09:33:56+08:00 yes no https://www.koyonchem.com/formate-salts/calcium-formate/feed-grade-calcium-formate.html https://www.koyonchem.com/uploads/42156/small/feed-grade-calcium-formate25b93.jpg Feed Grade Calcium Formate Calcium Formate 98% (Feed grade)  is a commonly used feed additive, even if only a small amount or trace amount is added in feed, it can play a significant role. Containing 30.0% organic calcium, efficient absorption and reduce the amount of inorganic calcium, only 1.3% can improve feed conversion, reduce feeding costs, and increase the daily gain of animals. https://www.koyonchem.com/uploads/42156/video/2025033120010370cfd.mp4 2024-05-23T09:36:46+08:00 yes no https://www.koyonchem.com/additives/anhydrides/pyromellitic-dianhydride.html https://www.koyonchem.com/uploads/202442156/small/pyromellitic-dianhydrideca827fe5-2bf8-4483-835f-28810c2f1de8.jpg Pyromellitic Dianhydride Pyromellitic Dianhydride (CAS 89-32-7),We offer two grades of content: 98% and 99.5% .99.5% grade is the primary product for exporting. It is mainly used as a monomer for the synthesis of polyimide films and as a chain extender for Polyethylene Terephthalate Resin( PET). https://www.koyonchem.com/uploads/42156/video/202408131606182e77a.mp4 2024-05-23T09:39:37+08:00 yes no https://www.koyonchem.com/additives/anhydrides/maleic-anhydride.html https://www.koyonchem.com/uploads/202442156/small/maleic-anhydride928e5725-aa4d-45ce-a8f8-2456fc596774.jpg Maleic Anhydride Maleic anhydride (CAS 108-31-6), Purity 99.%min, we can supply Reach certificate.In stock. https://www.koyonchem.com/uploads/42156/video/20240711151319c68f0.mp4 2024-05-23T09:43:25+08:00 yes no https://www.koyonchem.com/additives/acids-and-diamine/fumaric-acid.html https://www.koyonchem.com/uploads/202442156/small/fumaric-acide135d1a1-36a1-4656-8e78-812a77bf0e68.jpg Fumaric Acid Fumaric acid (CAS 110-17-8). We can provide industrial grade, feed grade, and food grade. Feed and food grades are white crystalline powders that are non-adhesive, have good fluidity, and possess an acidic aroma. The melting point ranges from 286°C to 302°C. https://www.koyonchem.com/uploads/42156/video/2024120610132624146.mp4 2024-05-23T09:52:29+08:00 yes no https://www.koyonchem.com/additives/chemicals-for-polyurethane/methylene-diphenyl-diisocyanate-mdi.html https://www.koyonchem.com/uploads/42156/small/methylene-diphenyl-diisocyanate-mdi12e90.jpg Polymeric MDI Poly[methylene(polyphenyl) isocyanate] is a diisocyanate-diphenylmethane(MDI)-based composition containing some higher functionality isocyanates. The functionality is about 2.6-2.7. It is a brown liquid at ambient temperatures. https://www.koyonchem.com/uploads/42156/video/20250307141701a503f.mp4 2024-10-16T11:05:43+08:00 yes no