Assay (as C6H14O6) (after drying)............................................99,0-100,5%

Arsenic (as As), not more than........................................................ 3 ppm

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

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

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

Specific rotation [a]20/D......................................................+20,5 to+21,5°

pH of 2% solution.......................................................................... 2,4-2,8

Loss on drying, not more than......................................................... 0,4 %

Melting range............................................................................ 189-193°C

Mercury (Hg), not more than........................................................... 1 ppm

Insoluble matter in H2O at 20ºC, not more than.......................... 0,003 %