Assay (Acidim.) a.d.s.............................................................99,8-100,1%

Identity..............................................................................................IR p/t.

Melting range............................................................................ 169-171°C

pH of 0,05 mol/l solution............................................................ 10,2-10,6

MAX. IMPURITIES

Insoluble matter in H2O................................................................. 0,005 %

Residue on ignition (as SO4)........................................................... 0,01 %

Water (H2O)....................................................................................... 0,5 %

ABS at l290 nm 40% sol. in water.......................................................0,2

Chloride (Cl)................................................................................ 0,0005 %

Heavy metals (as Pb).................................................................. 0,0005 %

As............................................................................................. 0,00005 %

Ca................................................................................................. 0,001 %

Cd............................................................................................... 0,0001 %

Co............................................................................................... 0,0001 %

Cr................................................................................................ 0,0001 %

Cu............................................................................................... 0,0002 %

Fe................................................................................................ 0,0005 %

K................................................................................................... 0,001 %

Mg................................................................................................ 0,001 %

Na................................................................................................. 0,001 %

Ni................................................................................................ 0,0005 %

Pb............................................................................................... 0,0002 %

Zn............................................................................................... 0,0002 %