Purple (government) Purple (government) Purple is a common term in politics for governments or other political entities consisting of parties that have red and blue as their political colours. It is of particular note in two areas: in the politics of the Netherlands and Belgium and in the politics of the United States. "Purple" () is the nickname of a government coalition of social democrats and liberals, excluding Christian democrats. It is derived from the combination of the colour of the social democrats (red) and liberals (blue). Both the Netherlands and Belgium have had such governments. In the Netherlands the two cabinets
Metacresol purple CO dissolves as CO is acidic. In chemistry, it has two useful indicator ranges: Metacresol purple Metacresol purple or m"-cresol purple, also called m"-cresolsulfonphthalein is a triarylmethane dye and a pH indicator that is used in medicine to detect end-tidal carbon dioxide to ensure successful tracheal intubation in an emergency as the indicator inside a colorimetric carbon dioxide detector. It can be used to measure the pH in subzero temperatures of saline or hypersaline media. In colometric capnography the indicator is incorporated in a matrix that provides a pH just above the indicator's colour change, it undergoes the colour change