Assay (by GC.) 99.9% min.

Color (APHA) 10 max.

Water (by Coulometry) 0.2% max.

Acidity (mEq./g.) 0.0005 max.

Alkalinity (mEq./g.) 0.0002 max.

Residue on Evaporation 0.001% max.

Acetone (GC.) 0.001% max.

Methanol (GC.) 0.05% max.

Propan-2-ol (GC.) 0.003% max.

Fusel oil Passes test

Solubility in water Passes test

Substances darkened by sulfuric acid Passes test

Substances reducing permanganate Passes test

Aluminium (Al) 0.1 ppm max.

Barium (Ba) 0.02 ppm max.

Boron (B) 0.02 ppm max.

Cadmium (Cd) 0.05 ppm max.

Calcium (Ca) 0.5 ppm max.

Chromium (Cr) 0.02 ppm max.

Cobalt (Co) 0.02 ppm max.

Copper (Cu) 0.02 ppm max.

Iron (Fe) 0.1 ppm max.

Lead (Pb) 0.05 ppm max.

Magnesium (Mg) 0.05 ppm max.

Manganese (Mn) 0.02 ppm max.

Nickel (Ni) 0.02 ppm max.

Potassium (K) 0.1 ppm max.

Sodium (Na) 0.5 ppm max.

Strontium (Sr) 0.02 ppm max.

Tin (Sn) 0.1 ppm max.

Zinc (Zn) 0.1 ppm max.