2-Butoxyethanol,CAS 111-76-2

SHANGHAI PROVCHEM INDUSTRIAL CO., LTD., RELYING ON SICHUAN WILLOW GREEN BIOTECHNOLOGY CO., LTD. AND SHANXI WILLOW GREEN BIOTECHNOLOGY CO., LTD., IS A BIOTECHNOLOGY ENTERPRISE INTEGRATING THE RESEARCH AND DEVELOPMENT, PRODUCTION AND SALES OF COSMETIC RAW MATERIALS, APIS, PHARMACEUTICAL INTERMEDIATES, PESTICIDES, AND AMINO ACIDS. THE COMPANY IS LOCATED IN OFFICE 2925, BUILDING 1, DANING MUSICAL PLAZA, NO.1 LANE 177, WANRONG ROAD, SHANGHAI. IT IS ONE OF THE FEW COMPANIES IN CHINA WITH THE QUALIFICATIONS AND PROCEDURES FOR WARANG CYANIDE AND SODIUM AZIDE.

SINCE ITS ESTABLISHMENT IN 1998, THE FACTORY HAS EXPANDED TO MORE THAN 20,000 SQUARE METERS, WITH A TOTAL INVESTMENT OF MORE THAN 200 MILLION YUAN AND AN ANNUAL OUTPUT VALUE OF MORE THAN 500 MILLION YUAN. THE FACTORY HAS COMPLETE SUPPORTING FACILITIES SUCH AS A SPECIAL CHEMICAL WAREHOUSE, A WELL-EQUIPPED QUALITY INSPECTION DEPARTMENT, A RESEARCH AND DEVELOPMENT TEST DEPARTMENT, AND ENVIRONMENTAL PROTECTION TREATMENT FACILITIES. AT THE SAME TIME, IT HAS MORE THAN 150 EMPLOYEES, INCLUDING 30 MANAGEMENT PERSONNEL, 20 QUALITY INSPECTION PERSONNEL, AND TECHNICAL PERSONNEL ACCOUNT FOR ABOUT 30% OF THE TOTAL NUMBER OF EMPLOYEES. RELYING ON THE EXPERIENCED PROCESS RESEARCH AND DEVELOPMENT, PRODUCTION MANAGEMENT AND MARKETING TEAM IN THE BIOPHARMACEUTICAL INDUSTRY, THE COMPANY MAINTAINS CLOSE RESEARCH AND DEVELOPMENT COOPERATION WITH THE PHARMACEUTICAL AND CHEMICAL ENGINEERING COLLEGES OF MANY UNIVERSITIES IN SHANGHAI, SICHUAN AND SHANXI PROVINCE, CONTINUOUSLY IMPROVING THE SCIENTIFIC AND TECHNOLOGICAL CONTENT OF PRODUCTS AND ENSURING THE ADVANCED NATURE OF RESEARCH AND DEVELOPMENT TECHNOLOGY.

AS A TRUSTWORTHY PARTNER, OUR HIGH-VALUE PRODUCTS CAN HELP CUSTOMERS ACHIEVE GREATER SUCCESS. WE HAVE MAINTAINED LONG-TERM COOPERATIVE RELATIONS WITH WELL-KNOWN DOMESTIC PHARMACEUTICAL COMPANIES FOR MANY YEARS. AT THE SAME TIME, EXCELLENT QUALITY, COMPETITIVE PRICES, A VARIETY OF DELIVERY AND PAYMENT METHODS, SINCERE AND TIMELY SERVICE ALSO ENABLE US TO HAVE A LONG-TERM CUSTOMER BASE IN THE UNITED STATES, RUSSIA, THE MIDDLE EAST, PAKISTAN, SOUTH KOREA, CHILE AND OTHER COUNTRIES AND REGIONS.

2-Butoxyethanol Use and Manufacturing

1. By ethylene oxide butanol addition derived. N-Butanol was added to a solution of boron trifluoride in ether at 20 ° C and ethylene oxide was bubbled under stirring. As the reaction progresses, the temperature automatically rises, and after the temperature drops, it is left for three days. With potassium hydroxide methanol solution and to pH = 8, which was crude. To the crude product after adding a little p-aminophenol fractionation, diversity 166-170 ° C distillate, derived products. Industrial production can be used in high temperature and high pressure (reaction temperature 180-250 ℃, pressure 2.1-4.6MPa) under the non-catalytic reaction, reaction 6h. Alkali catalysts may also be employed at near atmospheric pressure and at relatively low temperatures. Purification methods: easy to contain impurities in water, diethylene glycol monobutyl ether polymers, ethylene glycol and trace amounts of acidic substances. Fractional distillation or anhydrous calcium chloride, anhydrous sodium sulfate fractionation after drying method of refining.