... widely used in more than twenty industrial fields,such as food, pharmaceutical,fine chemical,agriculture,oil drilling and exploitation,and ... 4,Satisfying compatibility with acid,alkaline,brine,enzyme,surface active agent,antiseptic,oxidant and other thickener.5,Good synergistic action ... environment. 1983, FAO/WHO approved xanthan gum as safe food additive and didn't limit its additional ratio. As a ...