Assay (as C4H6O5)..................................................................99,0-100,5%

Appearance........................................................................................... p/t

Identity:

IR spectrum.......................................................................................... p/t.

Malate................................................................................................... p/t.

Melting range............................................................................ 127-132°C

Specific rotation............................................................................ inactive

Heavy metals (as Pb), not more than........................................... 0,001 %

Fumaric Acid, not more than............................................................ 1,0 %

Maleic Acid, not more than............................................................ 0,05 %

Residue on ignition, not more than.................................................. 0,1 %

Insoluble matter in H2O, not more than............................................ 0,1 %

Specific rotation................................................................ -0,10 to +0,10°

Arsenic, not more than.................................................................... 3 ppm

Mercury, not more than................................................................... 1 ppm

Lead, not more than........................................................................ 2 ppm