Chromatography is a proven method used to separate complex samples into their constituents, and it is undisputedly the most important procedure for isolating and purifying chemicals. It is classified ...

Purification of ethylene (C₂H₄), the largest-volume product of the chemical industry, currently involves energy-intensive processes such as chemisorption (CO₂ removal), catalytic hydrogenation (C₂H₂ ...

Students learn to identify various methods for separating mixtures to define density. Matter: Separation of Mixtures: Students learn to identify various methods for separating mixtures, to define ...

As a general rule, disclosure of a drug material comprised of a mixture of components, without more, does not render obvious a specific component of that mixture. See, e.g., In re May, 574 F.2d 1082, ...