成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
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 Diaminomaleonitrile
1187-42-4

Diaminomaleonitrile synthesis

5synthesis methods
Diaminomaleonitrile is obtained by tetramerization of hydrocyanic acid in the presence of catalysts such as alkylaluminum compounds.
-

Yield:1187-42-4 88%

Reaction Conditions:

with sodium cyanide;methylthiol at 60; for 2 h;Autoclave;Temperature;Time;Reagent/catalyst;

Steps:

2

Example 2 In an autoclave, 10 g of NaCN is added to 130 ml of acetone cyanohydrin. Then 6.54 g of methanethiol is added. The solution is then stirred at 60° C. for 2 hours. The solution turns orange. The excess acetone cyanohydrin is then neutralized by adding soda. The solution is then filtered and evaporated to give an orange-yellow solid (amount recovered=33.7 g corresponding to a yield=88%).

References:

US2015/197487,2015,A1 Location in patent:Paragraph 0029

Diaminomaleonitrile Related Search: