从China供应商批发进口3-Aminopropyltrimethoxysilane 13822-56-5 — FOB条款

3-Aminopropyltrimethoxysilane (CAS 13822-56-5) from Qingdao Hengda Zhongcheng Technology Co., Ltd. is a colourless transparent liquid silane coupling agent with molecular weight 179.28 and refractive index (n25D) of 1.4205 to 1.4225. The supplier lists purity grades of greater than or equal to 97% and greater than or equal to 98%, with a density at 20 degrees Celsius of 1.005 to 1.015 g/cm3. This organofunctional silane bears both a primary amine group and three methoxy silane groups, enabling dual reactivity with organic polymers and inorganic surfaces.

Structurally, the molecule consists of a three-carbon propyl chain terminated by an amino group at one end and a trimethoxysilyl moiety at the other. The methoxy groups hydrolyse in the presence of moisture to form silanol groups, which then condense with siliceous surfaces or each other. Typical industrial applications require controlled moisture levels during handling to prevent premature hydrolysis. The amine functionality provides basic catalytic activity and reactivity with epoxies, isocyanates, and phenolic resins.

Primary buyers include manufacturers of phenolic moulding compounds, epoxy adhesives, polyamide composites, and polybutylene terephthalate formulations. Foundry sand binders, coating formulators, and sealant producers also source this material. Trade is typically conducted in bulk liquid containers with standard hazmat documentation for chemical shipments from Shandong Province. Buyers should confirm packaging specifications, exact purity grade, and storage conditions directly with the supplier.

Qingdao Hengda Zhongcheng Technology Co., Ltd. is located in Qingdao International Innovation Park, Room B2-2, 13th Floor, in Qingdao, Shandong Province, China, postal code 266000. The supplier operates from a technology park setting in one of China's northern coastal chemical manufacturing regions. Its trust tier is listed as harbour, with a response rate of 0.00% and zero average response hours recorded, indicating no response history is available through this channel.

The listing presents the company as a silane coupling agent specialist under the HENGDA-M8133 product brand, with technical data sheets covering physical properties and application guidance. No information is provided about manufacturing site, annual capacity, R&D staff, year of establishment, or export licence details. Buyers should verify business registration, production facility audit status, and quality management certification directly before placing orders.