Slightly Solublein ether
AppearanceColorless / white / almost white powder
SolubilityVery soluble in water, freely soluble in ethanol, sparingly soluble in ether
TasteStrong acidic taste
OdorTypical, practically odorless
Clarity of SolutionConforms
Assay99.7 - 100.3 %
Readily Carbonizable SubstancesConforms
CalciumNo more than 30 mg/kg
Heavy MetalsNo more than 5 mg/kg
IronNo more than 3 mg/kg
ArsenicNo more than 1 mg/kg
LeadNo more than 0.5 mg/kg
MercuryNo more than 0,5 mg/kg
ChlorideNo more than 5 mg/kg
Residue on IgnitionNo more than 0.05%
Sulfated AshNo more than 0.05%
Filtration testNo more than 40 mg/kg (weight test, 0.2 um)
Particles > Mesh 25 (0.71 mm)No more than 10%
Particles < 0.20 mmNo more than 10%
Particles < Mesh 100 (0.150 mm)No more than 10%
IdentificationConforms
Appearance of SolutionConforms
Water7.5 - 8.8 %
OxalateNo more than 100 mg/kg
SulfateNo more than 100 mg/kg
Particles > 0.63 mmNo more than 10%
Molecular weight210.14
Colorwhite or colorless crystal or powder
