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 Acetone cyanohydrin
75-86-5

Acetone cyanohydrin synthesis

9synthesis methods
Acetone cyanohydrin is manufactured by the direct reaction of hydrogen cyanide with acetone, catalyzed by base, generally in a continuous process.
-

Yield:75-86-5 95%

Reaction Conditions:

with sodium hydroxide;sulfuric acid;sodium cyanide in water; pH=7.3 at 10; for 1.5 h;

Steps:

Example
Example 5,440 lbs/hr of a 30% aqueous NaCN solution (1,623 lbs/hr of NaCN, 3,787 lbs/hr of water and 30 lbs/hr of excess caustic (NaOH)), 10,000 lbs/hr of an HCN feed (9,900 lbs/hr of HCN, 85 lbs/hr of water and 15 lbs/hr of H2SO4), 20,710 lbs/hr of a fresh acetone feed (20, 710 lbs/hr of acetone), 9,355 lbs/hr of a recycle acetone feed (5,225 lbs/hr of acetone, 2,736 lbs/hr of water and 1394 lb/hr of HCN) and 5,465 lbs/hr of a 30% sulfuric acid stream (1,639.5 lbs/hr of H2SO4 and 3,825.5 lbs/hr of water) are fed to a reactor.. The resultant PH of the reaction mixture is 7.3.. The reactor is maintained at a temperature of 10°C by circulation of the reaction mixture through an external heat exchanger.. The residence time within the reactor is 90 minutes.. A crude acetone cyanohydrin product stream of 50,970 lbs/hr is withdrawn from the reactor and mixed with sulfuric acid to stabilize the same at a PH of 1.8.. The stabilized product stream is subjected to filtration, to recover insoluble sodium salts, and distillation to recover acetone cyanohydrin.. The overall yield of product ACH is greater than 95% on both an HCN and an acetone basis.

References:

Rohm And Haas Company EP1371632, 2003, A1 Location in patent:Page column 5-6

FullText

Acetone cyanohydrin Related Search:

来宾市| 木兰县| 深泽县| 巨野县| 屯留县| 丰原市| 连平县| 阳原县| 余庆县| 博爱县| 彭泽县| 阿巴嘎旗| 鲜城| 新沂市| 浦江县| 洞口县| 托里县| 北京市| 海城市| 南宫市| 德安县| 永州市| 江华| 临颍县| 曲靖市| 台中县| 马边| 峨眉山市| 三河市| 昌平区| 绥滨县| 贡觉县| 东乡县| 邯郸市| 庆阳市| 神农架林区| 海兴县| 黔西县| 黎川县| 酒泉市| 天全县|