中文字幕日韩小视频|亚洲 日韩 国产 中文有码|欧美激情一区二区精品高清视频|国产精品自在线免费

96%powder Paraformaldehyde (CH2O) n, also known as solid formaldehyde, formaldehyde polymer, low molecular weight formaldehyde polymerization degree n is about 8-12, solubility is 80, there is a strong smell of formaldehyde, polymerization degree n in more than 12 solubility is 120-170, insoluble in ethanol, propyl alcohol and ether, soluble in dilute acid and dilute alkali solution, melting decomposition quickly,Does not have some mechanical properties of plastic, and can not be processed into a film, can be used as a disinfectant, fungicide and manufacturing resin and artificial ivory, can be used in alkaline conditions (such as HaOH) by polymerization of pure formaldehyde.

The company is committed to the development and production of paraformaldehyde and other products, proactive, brave to pioneer and innovate, dare to learn peers xiu design experience, has been widely praised by peers and customers, and will continue to provide customers with more excellent products and services, our production of paraformaldehyde will be your most satisfactory choice