Item# ACFUMB028G Our whole granulated (not powdered, or encapsulated) food grade fumaric acid is a very stable non-toxic non-hygroscopic acid with a fruit-like taste. It’s used to add tartness to the flavor of food and drinks. It’s a suitable non-hygroscopic acid substitute for hygroscopic acids, giving a similar flavor profile without the water absorbing qualities of those acids. The salts and esters of fumaric acid are known as fumarates, and are typically non-hygroscopic. Fumaric acid is found in fumitory (Fumaria officinalis), bolete mushrooms (specifically Boletus fomentarius var. pseudo-igniarius), lichen, Iceland moss, and is naturally present in the human body. It's 1.5 times as sour as citric acid. Purity: 99.5-100.0% Manufacturer: Bartek Molar mass: 116.07 g/mol Melting point: 287 °C Acidity (pKa): pka1 = 3.03, pka2 = 4.44 Solubility in water: 0.63 g/100 mL Solubility in 95% ethanol: 5.76 g/100 g Slightly soluble in ether, and very slightly soluble in chloroform. Comes is a reclosable zip lock bag.