Reagents

Specifications

Assay Min 99% pH (5% solution in water; 25°C) 8.7-9.6 Chloride (Cl) Max 0.003% Heavy metal (as Pb) Max 0.0005% Insoluble matter Max 0.01% Iron (Fe) Max 0.001% Loss on drying (at 105°C) Max 1% Nitrogen compounds (as N) Max 0.001% Sodium (Na) Max 0.5% Sulfate (SO4) Max 0.005% Appearance White hygroscopic crystalline powder

Specifications

Assay % Min 97 Chloride (Cl) % Max 0.02 Sulfate (SO4) % Max 0.3 Iron (Fe) % Max 0.02 Sodium (Na) % Max 0.5

Specifications

Assay Min 99 % Insoluble matter Max 0.005 % Acidity Max 0.05 % Alkalinity Max 0.05 % Chloride (Cl) Max 0.005 % Hexafluorosilicate (SiF6) Max 0.05 % Sulphate (SO4) Max 0.005 % Iron (Fe) Max 0.001 % Heavy metal (as Pb) Max 0.001 % Appearance White crystalline powder

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 (acidimetric) Min 99.5 % pH (5% water at 25°C) 4.1 - 4.5 Insoluble matter in water Max 0.01 % Chloride (Cl) Max 0.001 % Sulfate (SO4) Max 0.003 % Total Nitrogen (N) Max 0.001 % Heavy metals (by ICP-OES) Max 0.001 % Iron (Fe) Max 0.001 % Sodium (Na) Max 0.005 % Loss on drying (at 105°C; 2 hrs) Max 0.2 %

Specifications

Assay (Iodometric) Min 99.5 % Chloride (Cl) Max 0.005 % Sulfate (SO4) Max 0.01 % Calcium (Ca) Max.0.005 % Sodium (Na) Max.0.2 % Loss on drying at 105°C Max.0.5 % Appearance Orange crystalline powder

Specifications

Assay (Iodometric) Min 99.5 % Chloride (Cl) Max 0.005 % Sulfate (SO4) Max 0.01 % Calcium (Ca) Max.0.005 % Sodium (Na) Max.0.2 % Loss on drying at 105°C Max.0.5 % Appearance Orange crystalline powder

Specifications

Assay (iodometric) Min 99.9 % Insolule matter Max 0.005 % Chloride (Cl) Max 0.001% Sulfate (SO4) Max 0.005 % Lead (Pb) Max 0.005 % Calcium (Ca) Max 0.002 % Iron (Fe) Max 0.002 % Copper (Cu) Max 0.001 % Sodium (Na) Max 0.02 % Loss on drying (at 105°C) Max 0.05 % Appearance Orange crystalline powder

Specifications

Appearance Clear, orange red colored solution Normality 1N+/-0.1% 0.

Specifications

Certified Value & Uncertainty (mol/L) 0.01665 + 0.00008* (at 25°C) *The certified value is expressed at 95% level of confidence Analysis (T) Against Sodium Thiosulphate (Na2S2O3) Traceability NIST SRM Batch No. 92404G

Specifications

Assay % Min 99.0 Chloride (Cl) % Max 0.005 Sulfate (SO4) % Max 0.05 Sodium (Na) % Max 0.5 Calcium (Ca) % Max 0.05 Loss on drying at 105°C % Max 0.5 pH (5%water) 8.6 - 9.8

Specifications

Assay (iodometric) Min 99.5 % Insoluble matter in water Max 0.005 % pH (5% sol in water) 9.0 - 9.8 Chloride (Cl) Max 0.001 % Sulfate (SO4) Max 0.01 % Lead (Pb) Max 0.005 % Calcium (Ca) Max 0.005 % Sodium (Na) Max 0.05 % Appearance Lemon yellow crystalline powder

Specifications

Appearance Clear yellow colored solution Normality 0.1N +/- 0.1%

Specifications

Assay % 99.5 - 100.5 pH (2% solution) 5.5 - 8.5 Insoluble matter % Max 0.01 Bromide (Br) % Max 0.01 Iodide (I) % Max 0.002 Sulfate (SO4) % Max 0.005 Phosphate (PO4) % Max 0.005 Total Nitrogen (N) % Max 0.001 Heavy metals (as Pb) % Max 0.0005 Iron (Fe) % Max 0.0003 Calcium (Ca) % Max 0.002 Barium (Ba) % Max 0.001 Magnesium (Mg) % Max 0.001 Sodium (Na) % Max 0.02 Loss on drying (at 130°C) Max 0.2

Specifications

Appearance Colorless solution Normality 1N +/- 0.1%