Assay.....................................................................................99,0-100,5%

Identity according to Pharmacopoeias................................................ p/t.

Density at 20/20..................................................................... 1,180-1,185

Density at 25/25..................................................................... 1,180-1,185

Refractive index n 20/D............................................................ 1,535-1,538

Angular rotation............................................................................. inactive

MAX. IMPURITIES

Appearance of solution........................................................................ p/t.

Insoluble matter in C2H5OH 70%.......................................................... p/t.

Acidity (as salicilic acid).................................................................. 0,05 %

Residual solvents (Ph.Eur./USP)........................................................... p/t.

Water (H2O)....................................................................................... 0,3 %

Heavy metals (as Pb).................................................................... 0,001 %