... PH value is 5.5-7.0. Heat, light and air stability. Soluble in water (8.85g/100ml, ... 25 degrees), almost insoluble in alcohol and ether. Specific rotation[a]D20: +26.5°∼+29.0 ... aliphatic amino acids ,one of twenty protein amino acids and one of eight essential for human body. It ... raw materials, the color and luster is pure white, the smell is pure, widely used in food, medicine, starch deep ...