Reagents

Specifications

Absorption maxima ;max. (buffer pH 12.2) 634 - 640 nm Specific absorptivity A1%,1cm (max;0.0015%; buffer pH 12.2, calculated on dried substance) 250-500 Loss on drying (at 110°C) Max 10.0 %

Specifications

Assay Min 99 % Clarity of solution (2 gm in 60 ml water) Passes USP test Colour of solution Passes test (Max 20 APHA) Weight/ mL at 20°C 1.043 - 1.048 g Refractive index (20°C; 589 nm) 1.538 - 1.541 Non volatile matter Max 0.05 % Acidity Passes USP test Heavy metal (as Pb) Max 0.0001 %

Specifications

Assay Min 99 % Acidity Max 1 ml N % Sulphate ash Max 0.05 % Melting point 47 - 49°C Chloride (Cl) Max 0.02 % Appearance White crystals/crystalline powder/flakes

Specifications

Appearance A white crystalline powder Assay (acidimetric; on anhydrous basis) Min 99% at 200 nm Min 70% at 220 nm Min 90% at 250 nm Min 98% Identity (IR) Conforms Loss on drying (at 120°C) Max 2% pH (10% solution) 5.5 - 7.5 UV transmittance (0.005 mol/L; 1cm; water)

Specifications

Assay Min 99.8% (excluding stabilizer) Weight/mL at 20°C 1.474-1.479 g Refractive index (20°C; 589nm) 1.444-1.445 Water (H2O) Max 0.05 % Acidity (as HCl) Max 0.0005 meq/g Non volatile matter Max 0.0005 % Ionised chloride (Cl) Max 0.00002 % Free chlorine (Cl) Max 0.0005 % Metallic impurities No reaction Aldehydes and ketones (as CH3CHO) Max 0.005 % Organic impurities Passes test Ethanol as stabilizer 0.5-1.0 % Appearance Clear colorless liquid

Specifications

Assay % 98.5 - 101.5 Specific optical rotation +24° to +26° Residue on ignition % Max 0.1 Chloride (Cl) % Max 0.02 Sulfate (So4) % Max 0.03 Iron (Fe) % Max 0.001 Lead (Pb) % Max 0.001 Loss on drying (at 105 °C for 3 Hrs.) % Max 0.5