Science Fair Project Encyclopedia Fumaric acid, also called
allomaleic acid, 2-butenedioic acid, boletic acid, or lichenic
acid, is a colorless crystalline flammable carboxylic acid with
a fruitlike taste and chemical formula 2(C2H)2. Irritating
maleic anhydride fumes are produced by its combustion. It is
found in fumitory (Fumaria officinalis), bolete mushrooms
(specifically Boletus fomentarius var. pseudo-igniarius),
lichen, and Iceland moss . Fumaric acid is an acid used in the
manufacture of polyester resins and polyhydric alcohols, as a
mordant for dyes, or as a flavoring. It is a common component of
food additives and dietary supplements, and is sometimes used as
a substitute for tartaric acid in beverages or baking powder.
Fumaric acid esters are sometimes used to treat psoriasis, as it
has been suggested that the condition is caused by an impairment
of fumaric acid production in the skin. A starting dose is
60-105mg daily, which may be gradually increased to as much as
1,290mg per day. Side effects in