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 METHYL 4-HYDROXYBENZOATE POTASSIUM
26112-07-2

METHYL 4-HYDROXYBENZOATE POTASSIUM synthesis

1synthesis methods
-

Yield:-

Reaction Conditions:

with potassium hydroxide in water;

Steps:

6 EXAMPLE 6

EXAMPLE 6 304.4 g of methyl 4-hydroxybenzoate were suspended in 740 ml of water and dissolved at 20° C. by adding 142 ml of 50% strength potassium hydroxide solution in the course of 20 minutes. Neutralisation was completed (pH 12.1) with a further 6 ml of the 50% strength potassium hydroxide solution. Spray-drying gave the pure-white potassium salt of methyl 4-hydroxybenzoate with a 4-hydroxybenzoic acid content of 0.2% by weight and a water content of 0.1% by weight.

References:

US4276431,1981,A

METHYL 4-HYDROXYBENZOATE POTASSIUM Related Search:

衡东县| 湛江市| 微博| 安仁县| 富平县| 军事| 密山市| 五指山市| 宜良县| 淮阳县| 萝北县| 怀远县| 永修县| 南靖县| 汾阳市| 绵阳市| 平湖市| 汤阴县| 景谷| 梧州市| 建昌县| 麻栗坡县| 遂溪县| 视频| 武平县| 云龙县| 上杭县| 渭南市| 永春县| 宾阳县| 泽库县| 房产| 乐业县| 武定县| 怀柔区| 五河县| 河南省| 岳阳市| 西峡县| 闽侯县| 从江县|