... % 2.mainly used as acidulant, flavoring agent, preservative etc in food and beverage industry. FULL TYPICAL ANALYSSI OF SHIPPED BATCHUNITINDEX RESULTAPPEARANCE ... used as acidulant, flavoring agent, preservative and antistaling agent in food and beverage industry. it is also used as antioxidant, plasticizer ... , USP, FCC, etc. and China National Standard:GB. Citric Acid food grade 98%