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What is the commonly used name of diluted acetic acid?

The concentration of acetic acid in vinegar is about 5 % by mass. Vinegar can be colourless, but it often has natural or artificial colourings. Vinegar appears in all kinds of food. Who hasn't eaten salt and vinegar potato chips (crisps)? It is also a major component of many BBQ and hot sauces. Vinegar acts as a preservative. Think of pickled onions and cucumbers. Even hard-boiled eggs are pickled in a mix of brine and vinegar. There are many varieties of vinegar. They include red, white, malt, cider, sherry, rice, and balsamic vinegars. Whatever you call them, they are just coloured and flavoured solutions of acetic acid in water.