1. Character of L-Arginine:
The essential amino acid, white crystals or crystalline powder, no smell, bitter. Soluble in water, slightly soluble in alcohol  

2. Usage of L-Arginine:
~Food grade: nutritional supplement, flavouring agent. With sugar heating generates special flavoring substances
~Medicine grade: L-arginine can maintain essential amino acids of infant growth . It is the middle metabolites of the urea cycle