一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
010-86108875
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List Butylated hydroxytoluene (BHT)
128-37-0

Butylated hydroxytoluene (BHT) synthesis

10synthesis methods
BHT is produced commercially by the alkylation of para-cresol with isobutylene. BHT is also produced by several western European manufacturers, production/processing plants in Germany, France, the Netherlands, United Kingdom and Spain.
-

Yield:128-37-0 215.16 g

Reaction Conditions:

with hydrogen;platinum at 160; for 4 h;Reagent/catalyst;Temperature;

Steps:

1

Add 2.6 g of platinum catalyst to a 1 L reactorAnd 260 g of 2,6-di-tert-butyl-4(dimethylaminomethyl)phenol,Then hydrogen is introduced, and the hydrogenolysis process maintains the system temperature at 160 ° C.The molar ratio of hydrogen to 2,6-di-tert-butyl-4(dimethylaminomethyl)phenol is 2:1,Hydrogenation reaction for 4 hours, hot filtration to remove the catalyst,The crystal was cooled to give 215.16 g of 2,6-di-tert-butyl-p-methylphenol.

References:

CN108250047,2018,A Location in patent:Paragraph 0029; 0031; 0034; 0037

Butylated hydroxytoluene (BHT) Related Search:

阜新市| 洛隆县| 禄丰县| 长岭县| 静安区| 多伦县| 许昌市| 河曲县| 高淳县| 汕尾市| 太白县| 泗阳县| 浦江县| 哈尔滨市| 永靖县| 苏尼特右旗| 和龙市| 普安县| 渭源县| 宁阳县| 夏邑县| 池州市| 华安县| 五台县| 泸定县| 双流县| 义乌市| 龙游县| 日土县| 将乐县| 盖州市| 西平县| 枞阳县| 泸水县| 红安县| 中牟县| 新巴尔虎右旗| 凤台县| 兴义市| 东丰县| 五华县|