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:

房山区| 岢岚县| 临夏县| 丹巴县| 桐梓县| 虹口区| 永顺县| 澎湖县| 三明市| 得荣县| 隆子县| 泊头市| 太仆寺旗| 和硕县| 东乌珠穆沁旗| 甘孜县| 忻城县| 达孜县| 石渠县| 大方县| 江华| 巢湖市| 滁州市| 内乡县| 建德市| 连云港市| 靖宇县| 浮山县| 丰都县| 长寿区| 衡阳县| 富裕县| 姚安县| 平武县| 永吉县| 河源市| 平定县| 石渠县| 阿合奇县| 绵阳市| 定边县|