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 Bromothymol Blue
76-59-5

Bromothymol Blue synthesis

2synthesis methods
Bromothymol Blue is a pH indicator used for the determination of weak acids and bases. It is yellow when it is acidic and blue when it is alkaline. Under stirring, bromine is added into the glacial acetic acid suspension of thymol blue, and the reaction is carried out at 50 °C to obtain bromothymol blue.
-

Yield:-

Steps:

Multi-step reaction with 2 steps
1: zinc chloride / 100 - 110 °C
2: glacial acetic acid; bromine

References:

Lubs;Clark [Journal. Washington Academy of Sciences, Washington, D. C,vol. 6,p. 482][Chemisches Zentralblatt,1916,vol. 87,# II,p. 1068]

Bromothymol Blue Related Search: