Supply of quality propyl gallate

Referred to as the PG 
 Molecular Formula: C10H12O5 
 Molecular Weight: 212.21 
 CAS No.: 121-79-9 
 Properties: White powder, odorless, slightly bitter, odorless solution. PG is insoluble in water, slightly soluble in cottonseed oil, peanut oil, pig fat. The PH value of 0.25% aqueous solution of about 5.5. Gallic acid ester is relatively stable, the case of copper, iron and other metal ions forming reaction, becomes purple or dark green, hygroscopic, light instability, the occurrence of decomposition, high temperature is poor. 
 Role: Food antioxidants. 
 PG in food consumption: the amount of% 
 Vegetable oil, animal oil 0.001-0.01 0.001-0.02 
 Margarine, whole milk powder 0.005-0.01 0.001-0.01 
 Cereal bread 0.001-0.004 0.003 
 0.01 0.1 candy chewing gum matrix