Application of p-hydroxyphenylpropionic acid_Kain Industrial Additives

background and overview[1] p-hydroxyphenylpropionic acid is also called phloretinic acid. white to light yellow crystals. relative molecular mass 166.18. melting point 129~130℃. boiling point 208~210℃ (1.867×103pa). insoluble in benzene and chloroform, soluble in ethanol, ether, ethyl acetate and hot water. the ortho position develops color when exposed to ferric chloride, but the para position does…