Author : https://www.chinesestandard.net
Publisher : https://www.chinesestandard.net
Page : 9 pages
File Size : 53,7 Mb
Release : 2023-11-09
Category : Technology & Engineering
ISBN : 8210379456XXX
YS/T 273.12-2006 Translated English of Chinese Standard (YS/T 273.12-2006, YST273.12-2006) by https://www.chinesestandard.net Pdf
This Part specifies the method for determination of calcium oxide content in cryolite. This Part applies to the determination of calcium oxide in cryolite. Determination range (mass fraction): ??1.25%. 2 Method summary Use perchloric acid to de-fluorinate the test portion; heat until the smoke of perchloric acid has evaporated, then use hydro