Reagents

Specifications

Water soluble matter Max 0.2 % Losss on drying (at 105°C) Max 6.0 % pH (2% solution in water) 5.0 - 7.5 Starch & Dextrin Passes test Sulfated ash Max 0.2 % Appearance White or almost white coarse/ crystalline powder

Specifications

Assay % Min 98.0 Specific rotation (20/D; 10% in H2O) +33.0° to +35.0°

Specifications

Assay % Min 97.0 Residue on ignition % Max 0.3

Specifications

Assay (GC) % Min 99.5 Wt. Per ml at 20°C 1.262 - 1.264g Refractive index Ë 1.626 - 1.628 Acidity (as SO2) % Max 0.0005 Non-volatile matter % Max 0.005 Hydrogne sulfide (H2S) % Max 0.00015 Sulfur dioxide (SO2) % Max 0.00025 Copper (Cu) % Max 0.00005 Iron (Fe) % Max 0.0002 Lead (Pb) % Max 0.00005

Specifications

Assay Min 95 % Melting range 240 – 243°C Appearance Pale yellow powder

Specifications

Assay (TLC) Min 99.0 % Insoluble matter Passes filter test Residue on ignition Max 0.05 % Loss on drying (at 110°C) Max 1 % Solubility (0.5 M in water; 20°C) Complete,colorless pH (0.5 M solution in water; 25°C) 5.0 - 6.0 Chloride (Cl) Max 0.005 %

Specifications

Assay (GC) % Min 99 Density (d 20 °C/4 °C) 0.909 - 0.911

Specifications

Assay Min 98 % Density (d20°C/4°C) 0.926 - 0.928 Appearance Colourless to pale yellow liquid

Specifications

Assay Min 98 % Melting range 29 - 33°C Appearance Colourless to pale yellow solid or liquid

Specifications

Assay Min. 95 % Melting point 172 - 180°C Appearance White crystalline powder

Specifications

Appearance Brownish black crystalline powder Suitability as indicator Passes test

Specifications

Assay (on anhydrous basis) 98.0 - 101.0 % pH (5% w/v solution in water) 6.8 - 8.0 Specific optical rotation ([]20/D; 5.0% w/v solution) +25.0° to +27.5° Heavy metal (as Pb) Max 0.002 % Loss on drying (at 105°C) Max 3 %