Properties of amino acids colorless solid state of water-soluble hydrogen bond and van der Waals force, a high melting point is between 150 - 300 0C because hydrogen bond acidity - based Amphoteric substance.
Properties of amino acids in solid state, no color
aquatic fusion melt water, hydrogen bonding and the van der Waals high melting point, between the 150 - 300 0C. Because hydrogen bonding acid - base Amphoteric substance .