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China National Chemical Corporation
sunjibo
beijingshibeisihuanxilu62hao
bei jing, bei jing, 100080
CN
We are committed to accelerate the drug discovery process by providing the high quality products and services through innovations, the state of art new technologies and in-house research and development.
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Thursday, February 18, 2010. Selecting Entrainers for Azeotropic Distillation. The entrainer is specific to the mixture in question - e. , benzene is a feasible entrainer for separating ethanol and water, but not for separating ethanol and methyl ethyl ketone - so there are no universal entrainers.
طلا بعلت آنکه فلزی بسیار نرم و چکش خوار می باشد باید با فلزات دیگری آمیخته گردد تا استحکام لازم را بیابد. به غیر از طلای ۲۴ عیار مابقی را آلیاژ طلا می نامند.