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 1-Amino-2-naphthol
2834-92-6

1-Amino-2-naphthol synthesis

12synthesis methods
-

Yield:2834-92-6 99%

Reaction Conditions:

with hydrogen in water at 20 - 50; for 1 h;Temperature;

Steps:

2.1; 2.2 2) Catalytic hydrogenation reaction Add
82.5g of the prepared 1-nitroso-2-naphthol to 825.0g of water, stir at room temperature until dissolved, and simultaneously open the pump C and hydrogen pressure reducing valve, pump C (flow rate is 15mL/min), Hydrogen gas flows into the tubular reactor after the pressure reducing valve. The tubular reactor is placed at 50°C with a residence time of 1h. The reaction liquid flows into the receiving bottle, and then it is rotovaped until the solution is saturated. It precipitates in ice water and is filtered to obtain white crystals. 73.1g, the yield was 99%, and its content measured by HPLC was 96.8%.

References:

Zhejiang University of Technology;Yu Zhiqun;Huang Jiajia;Xie Shitian;Su Weike CN111217764, 2020, A Location in patent:Paragraph 0011; 0032; 0035-0036; 0041; 0044-0045

FullText

1-Amino-2-naphthol Related Search:

保山市| 娄烦县| 依兰县| 静乐县| 南皮县| 福建省| 仲巴县| 大同县| 湘乡市| 云安县| 元阳县| 云安县| 固阳县| 南宫市| 潍坊市| 渝北区| 洛宁县| 朔州市| 普兰县| 承德县| 醴陵市| 天祝| 云阳县| 东城区| 甘孜县| 安塞县| 化德县| 平遥县| 特克斯县| 田林县| 青海省| 浦东新区| 峨眉山市| 阿克苏市| 台安县| 凌云县| 广水市| 湘潭市| 星座| 连南| 花莲市|