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凡士林是一种油脂状的石油产品,学名为石油脂,是极具化学惰性的碳氢化合物,不溶于水,化学稳定性和抗氧化性良好,其滴点约为37~54℃。凡士林在日常生活生产中是制作化妆品、药用油膏、润滑剂、绝缘剂、防锈和防水剂、浸润和灌注电容等产品的上好材料。在中小学理科实验中,凡士林应用也很广泛。一、在仪器保养中的应用1.防锈蚀——润滑。在中小学实验室中,部分铁制仪器与工具,如方座支架及附件、采集捕捞工具的
Vaseline is a greasy petroleum product known under the name of petroleum grease. It is a highly chemically inert hydrocarbon that is insoluble in water and has good chemical and oxidation resistance. Its drop point is about 37-54 ° C. Vaseline is a superior material for the production of cosmetics, medicinal ointments, lubricants, insulators, rust and water repellents, wetting and infusion capacitors and other products in everyday life. In primary and secondary science experiments, Vaseline is also widely used. First, the application of equipment maintenance 1. Anti-corrosion - lubrication. In primary and secondary school laboratories, some iron instruments and tools, such as square seat brackets and accessories, capture fishing tools