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 4-Propoxy-3-nitrobenzoic acid
35288-44-9

4-Propoxy-3-nitrobenzoic acid synthesis

3synthesis methods
Benzoic acid, 3-nitro-4-propoxy-, propyl ester

1221258-88-3
0 suppliers
inquiry

-

Yield:35288-44-9 98%

Reaction Conditions:

with sodium hydroxide in water at 70 - 80; for 12 h;Large scale;

Steps:

3

3-nitro-4-propoxybenzoic acid propyl ester was added into 300 kg of water and 20 kg of sodium hydroxide solution; slowly heated up to 70-80°C for 12 hours, dropped to 15-25°C, and concentrated hydrochloric acid was added to adjust the pH of the solution. 2~3 precipitated pale yellow solids. After cooling to 0~10°C, the mixture was stirred for 2 hours, filtered and dried to obtain 441.4 kg of 3-nitro-4-propoxybenzoic acid. The yield was 98.0%, and the liquid purity was 98.71%.

References:

CN108017543,2018,A Location in patent:Paragraph 0025

4-Propoxy-3-nitrobenzoic acid Related Search:

祥云县| 湟中县| 呼伦贝尔市| 图们市| 政和县| 崇州市| 乌审旗| 和硕县| 乐至县| 右玉县| 清新县| 大连市| 建始县| 涿州市| 新沂市| 抚顺市| 东宁县| 肥城市| 新晃| 济南市| 康定县| 阳新县| 五华县| 五台县| 齐齐哈尔市| 齐齐哈尔市| 耒阳市| 余干县| 辛集市| 洱源县| 连江县| 和林格尔县| 新民市| 新兴县| 兰考县| 武强县| 襄樊市| 河西区| 柘荣县| 德昌县| 正定县|