The invention discloses a preparation method of pharmaceutical purity grade of 2-(2-chloroethoxy) ethanol used as a hydroxyl ethylation agent. The preparation method comprises the steps: with 2-Chloroethanol and ethylene oxide as raw materials, performing a reaction in the presence of a catalyst to obtain 2-chloroet...
[Class : 1] Chemicals Used In (Horticulture, Agriculture, Science, Photography, And Industries Of Textiles, Tanning And Pharmaceutical); Chemical; Specialty Chemical, Chemical Compositions For Use In Cosmetics And Perfumery; Chemical Compositions For Injection Into Building Structures, For Use In The Building Industry, For Use In Construction; Chemical And Organic Compositio...
[Class : 42] Rendering Services To Various Third Parties, Including Government Agencies, Various Services, Including Consultancy In Manufacturing, Research & Development, Designing, Testing, Technical Evaluations, Estimations And Appraisals In Chemical, Scientific And Other Technological Areas Through Its Engineers, Scientists, Specialists, Experts And Professionals.
[Class : 1] Chemicals Used In Agriculture, Horticulture And Forestry, As Well As Industry, Science And Photography, Industries Of Textiles, Tanning And Pharmaceutical; Substrates For Soil Free Growing(agriculture); Chemicals For Use In Agriculture, Except Fungicides, Weedkillers, Herbicides, Insectisides And Parasiticides; Soil Conditioners For Agricultural Use And Purposes;...
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