Reagents

Specifications

Assay (by acidimetry) 99.5 - 101 % pH (1% solution in water) 8 - 8.6 Carbonate (as K2CO3) Passes test Chloride (Cl) Max 0.015 % Sulfate (SO4) Max 0.01 % Arsenic (As) Max 0.0002 % Heavy metals (as Pb) Max 0.0005 % Calcium (Ca) Max 0.005 % Iron (Fe) Max 0.001 % Copper (Cu) Max 0.0005 % Sodium (Na) Max 0.5 %

Specifications

Assay Min 99 % Insoluble matter in NH4OH Max 0.01 % Residue on ignition Max 0.05 % Chloride (Cl) Max 0.005 % Sulfide (S) Max 0.001 % Antimony (Sb) Max 0.05 % Iron (Fe) Max 0.001 % Lead (Pb) Max 0.002 % Appearance Almost white powder

Specifications

Absorption in NaOH 0.01 Mol/L 575 - 582 nm Specific absorptivity Min 500 Loss on drying % Max 7

Specifications

Assay 99.0 - 102.0 % Insoluble matter Max. 0.01 % Chloride (Cl) Max. 0.01 % Ferricyanide [(Fe(CN)6]3- Max. 0.01 % 6 Ferrocyanide [(Fe(CN)6]4- Max. 0.02 % Sulphate (SO4) Max. 0.01 % Appearance Ruby red crystals

Specifications

Assay Min 99 % Insoluble matter Max 0.005 % Chloride (Cl) Max 0.005 % Sulphate (SO4) Max 0.005 % Chromium (Cr) Max 0.005 % Copper (Cu) Max 0.005 % Iron (Fe) Max 0.005 % Lead (Pb) Max 0.005 % Appearance White crystalline powder

Specifications

Assay Min 98 % Silver (Ag) 68.5-69.5 % Total impurities Max 0.05 % Insoluble in watter Max 0.02 % Fraction that cannot be Max 0.03 % precipitated with HCl Nitrate Max 0.001 % Aluminium (Al) Max 0.001 % Gold (Au) Max 0.001 % Calcium (Ca) Max 0.001 %

Specifications

Assay Min 99 % Chloride (Cl) Max 0.005 % Nitrite (NO2) Max 0.002 % Sulphate (SO4) Max 0.01 % Heavy metal (as Pb) Max 0.001 % Lead (Pb) Max 0.001 % Calcium (Ca) Max 0.005 % Iron (Fe) Max 0.001 % Appearance Cololess deliquescent crystals/ white crystalline

Specifications

Assay (By acidimetric) 99.5 - 100.5 % Insoluble matter Max.0.005 % Chloride (Cl) Max.0.005 % Sulfate (SO4) Max.0.01 % Calcium (Ca) Max.0.003 % Aluminium (Al) Max.0.002 % Magnesium (Mg) Max.0.005 % Potassium (K) Max.0.01 % Appearance Orange crystalline powder

Specifications

Assay (ex Cl; as BaCl2.2H2O) Min 99 % Heavy metals (as Pb) Max 0.001 % Substances not precipitated by dilute H2SO4 (as SO4)Max 0.1 % Iron (Fe) Max 0.001 % Appearance White crystalline powder

Specifications

Assay Min 85 % Weight/ml at 20°C About 1.71 g Chloride (Cl) Max 0.0005 % Nitrate (NO3) Max 0.0005 % Silicate (SiO2) Max 0.025 % Sulfate (SO4) Max 0.002 % Arsenic (As) Max 0.0001 % Calcium (Ca) Max 0.004 % Copper (Cu) Max 0.0005 % Iron (Fe) Max 0.0015 % Lead (Pb) Max 0.001 % Magnesium (Mg) Max 0.004 % Manganese (Mn) Max 0.0005 % Potassium (K) Max 0.005 % Substance reducing KMnO4 (as O) Max 0.001 % Volatile acids (as CH3COOH) Max 0.001 %

Specifications

Assay (acidimetric, on dried basis) 98-100.5 % Appearance of solution Passes test Identification as per pharma Passes test pH (5% sol in water) 4.2-4.5 Chloride (Cl) Max 0.02 % Sulphate (SO4) Max 0.03 % Fluoride (F) Max 0.001 % Heavy metal (as Pb) Max 0.001 % Arsenic (As) Max 0.0002 % Iron (Fe) Max 0.001 % Sodium (Na) Max 0.1 % Reducing substances by KMnO4 (as O) Passes test Insoluble substances and organic matter Max 0.2 % Loss on drying (at 130°C) Max 1.0 % Appearance White crystalline powder

Specifications

Assay Min 98 - 102 % Ph (5% solution in water) 6.0-8.0 Chloride Max 0.003 % Iron (Fe) Max 0.0005 % Potassium (K) Max 0.05 % Calcium (Ca) Max 0.02 % Insoluble matter Max 0.005 % Sulfate (SO4) Max 0.002 %