Glycerol Glycerol | Wei Connaught Chemical (certified) | glycerin provided by Connaught Chemical Co., Ltd. Qingdao Wei. Qingdao Wei Connaught Chemical Co. (www.qdweinuo.com) is specialized in the "phenol, aniline, ethylene, n-butanol, isobutanol, n-propanol, isopropanol, methanol," the business, the company adhering to the "integrity business, hard service "concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Feng Zhongying. Industrial grade glycerol production methods: 1/2 amount of distilled water was diluted with glycerin, and stirred sufficiently, the activated carbon was added and heated to 60 ~ 70 ℃ decolorization treatment and then vacuum filtered, and the filtrate to ensure clear and transparent. Control dropping, and the filtrate was added into a good pre-treated with 732 and 717 type strong acid cation resin mixed alkali cation and anion resin column to adsorb remove glycerol electrolyte and aldehydes, pigments, esters and other non-electrolyte impurities. After removal of the glycerol solution impurities were distilled off under reduced pressure, to control the vacuum degree of more than 93326Pa, pot temperature 106 ~ 108 ℃, most of the water was distilled off, and then the pot temperature rose to 120 ℃ rapid dehydration, heating was stopped when no more water glycerol prices inside the autoclave income is finished. Preparation of the test solution, the product of about 10g of glycerin, sulfur dioxide, accurately weighed glycerin glycerin given 25ml flask, precision internal standard 5ml solution, dissolved in methanol and diluted to the mark, as the test solution. Textile and dyeing industry for the preparation of lubricants, hygroscopic agent, anti-shrinkage fabric treatment agent, spreading agent and penetrant. 5, used as a sweetener, moisture-absorbing agent in tobacco and solvents in the food industry.