Monosodium Glutamate is also called monosodium glutamate extract. It is a kind of white crystal. Monosodium glutamate is usually made from corn or rice through the microbiology ferment technology. There are mainly 5aspects to guarantee the high quality of the product. Product Specification: Content (C5H8NO4Na) ≥800g/kg Zinc (as Zn)≤5mg/kg Plumbum (as Pb)≤1mg/kg Arsenic(As)≤0.5mg/kg Expiry :36 months in sealed condition Storage: Store in a dry, dark, cool