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 2,3-Naphthalenedicarboxylic acid
2169-87-1

2,3-Naphthalenedicarboxylic acid synthesis

8synthesis methods
Using o-phthalaldehyde as raw material, the 2,3-Naphthalenedicarboxylic acid is finally produced through acetalization reaction, reduction reaction, hydrolysis reaction, cycloaddition reaction, dehydration reaction, and hydrolysis reaction.
-

Yield:2169-87-1 97%

Reaction Conditions:

with hydrogenchloride;sodium hydroxide in water; pH=5.5 at 30; for 15 h;Temperature;pH-value;

Steps:

3.VI
General procedure: (VI) Hydrolysis reaction: Naphthalic anhydride was added to the sodium hydroxide solution at a concentration of 8%, then adjusted to pH 5 with hydrochloric acid and reacted at a temperature of 2 ° C for 2 hours. The filter cake was then filtered and washed and dried to give 2,3-naphthalene dicarboxylic acid.

References:

Hebei Fan Ke Chemical Co., Ltd.;Zhou Weijiang;Bai Shikang;Duan Jun;Wang Zeyong CN106748752, 2017, A Location in patent:Paragraph 0056; 0063

FullText

2,3-Naphthalenedicarboxylic acid Related Search:

大埔区| 平度市| 佛山市| 荆门市| 香格里拉县| 五峰| 巍山| 巴塘县| 苍梧县| 社旗县| 潢川县| 龙口市| 镇康县| 泸州市| 宁津县| 满城县| 榕江县| 磐安县| 阿坝| 远安县| 九龙城区| 罗江县| 时尚| 乌兰浩特市| 郎溪县| 平山县| 五华县| 尚义县| 石楼县| 奉化市| 溆浦县| 环江| 华安县| 铜鼓县| 麻栗坡县| 台北市| 阿坝| 巴里| 准格尔旗| 铅山县| 九江市|