Minimum assay (as C11H16O2).......................................................... 98,5 %

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

MAX. IMPURITIES

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

Insoluble matter in C2H6O..................................................................... p/t.

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

3-tert-Butyl-4-Methoxyphenol..........................................................10 %

Hydroquinone....................................................................................... p/t.

Organic volatile impurities.................................................................... p/t.

Related substances.............................................................................. p/t.

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

As............................................................................................... 0,0003 %

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

Pb............................................................................................... 0,0005 %