Guangzhou Yang Qing Chemical Co., Ltd. Distribution of propylene glycol, glycerin, triethanolamine, AES, AOS variety, reasonable prices. Guangzhou Yang Qing Chemical Co., strength, credit, keep the contract, to ensure product quality, variety principles of operating characteristics and puerile, and win the trust of our customers. Main: Dow propylene glycol, SKC glycol quality indicators Item Index Test Method purity propylene glycol,% ≥99.5 see Appendix water (v / v),% ≤0.25GB / T 606 color ≤25GB / T 605 relative density, d2041.050 -1.056GB / T 611 boiling range (95%), ℃ 213-216GB / T 615 acidity ≤2.5GB / T 9736 Residue on ignition,% ≤0.005GB / T 508 packaging, storage and transportation of products using plastic drum, pack size can be divided into 25kg, 100kg, 210kg, three specifications glycol Dow prices or packaging specifications according to user requirements. Guangzhou Yang Qing Chemical Co., Ltd. Distribution of propylene glycol, glycerin, triethanolamine, AES, AOS variety, reasonable prices. Guangzhou Yang Qing Chemical Co., strength propylene import prices, credit, keep the contract, to ensure product quality, variety principles of operating characteristics and puerile, and win the trust of our customers. Main: Dow propylene glycol pharmaceutical grade, SKC glycol subsequent processing complex due homogeneous catalysis, for the development of a heterogeneous catalytic system. Eleuterio other selected contains only weakly acidic carboxyl functional groups of the cation exchange resin catalyst, acrolein hydration reaction at 40 ~ 120 ℃, the conversion rate of 25% ~ 65%, 3-HPA selectivity of up to 80%. When the carboxylic acid functional groups formed from 0.1% to 5% of an alkali metal or alkaline earth metal salt, it helps to improve the reaction selectivity. However, the resin catalyzed hydration reaction temperature is higher, the reaction time is long, so that the reaction selectivity and space-time low yields. Propylene glycol original | Jan-Chemical (certified) | Dongguan glycol provided by the Guangzhou Yang Qing Chemical Co. Guangzhou Yang Qing Chemical Co., Ltd. (www.gzyangqing.com) (www.gzyangqing.com) is Guangzhou, Chemicals Agents leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. In Jan-Chemical leadership with the staff warmly welcome all inquiries negotiations to create the Yang-Chemical better future.