Sour tasting clear liquid.
Acetic acid (in the form of vinegar) is used to preserve foods such as pickles. It also provides the sour taste for salad dressings and mayonnaise.
Acetic acid is a fungicide and is used in cleaning products to remove calcium deposits left by hard water.
acetic acid: InChI=1/C2H4O2/c1-2(3)4/h1H3,(H,3,4)/i2-1/f/h3H