Chemicals

Specifications

Assay (Complexometric) 99.0 - 101.0 % pH (5% water) 4.0 – 5.0 Insoluble matter in H2O Max. 0.01 % Chloride (Cl) Max. 0.02 % Sulfate (SO4) Max. 0.1 % Cyanide (CN) Max. 0.001 % Heavy metals (as Pb) Max. 0.001 % Arsenic (As) Max. 0.0001 % Calcium (Ca) Passes test Iron (Fe) Max. 0.0005 % Nitrilotriacetic acid Max. 0.1 %

Specifications

Assay 99.0-100.5 % Specific rotation at 20°C/D (10% Solution) (+20.5° to +21.5°) Residue after ignition Max 0.1 % Heavy metals as (Pb) Max 0.002 % Iron (Fe) Max 0.001 %

Specifications

Assay (acidimetric) Min 99.0 % Insoluble matter in water Max 0.02 % Loss on drying at 300°C Max 3 % Chloride (Cl) Max 0.01 % Phosphate (PO4) Max 0.005 % Sulfate (SO4) Max 0.05 % Calcium (Ca) Max 0.01 % Iron (Fe) Max 0.01 % Magnesium (Mg) Max 0.01 % Appearance A hygroscopic white crystalline powder or granules

Specifications

Assay (on anhydrous basis) Min 99.5% Moisture (at 300°C) Max 1.5% Chloride (Cl) Max 0.01% Silicate (SiO2) Max 0.02% Sulfate (SO4) Max 0.02% Iron (Fe) Max 0.005% Heavy metal (as Pb) Max 0.003%

Specifications

Assay % 88 - 92 Sulfated ash % Max 0.1 Iron (Fe) % Max 0.001 Chloride (Cl) % Max 0.2 Sulfate (SO4) % Max 0.02 Heavy metals (as Pb) % Max 0.001 Arsenic (As) % Max 0.0003 Calcium (Ca) % Max 0.02 Mercury (Hg) % Max 0.0001 Lead (Pb) % Max 0.0005 Wt.per ml at 20 °C 1.20 - 1.21 g

Specifications

Assay Min 99.5 % Refractive index (20°C; 589 nm) 1.450 - 1.451 Weight/ ml at 20 °C 0.945 - 0.947 g/ml Water (H2O) Max 0.2 % Non volatile matter Max 0.02 % Acidity (as CH3COOH) Max 0.001 % Cyclohexane (C6H12 ) Max 0.001 % Cyclohexanol (C6H12O) Max 0.2 % Copper (Cu) Max 0.00005 % Iron (Fe) Max 0.0001 % Lead (Pb) Max 0.00005 % Appearance A clear colorless liquid

Specifications

Description Brownish red powder Appearance of solution (1.0 g/l;water) almost clear to slightly turbid red solution Transition range at pH 3.0 to pH 5.2 Violet to orange red Loss on drying at 110°C Max 5.0% Sensitivity test Passes test

Specifications

Assay (acidimetric) 99.5 - 101 % pH (5% solution in water) 8.0 - 8.5 Chloride (Cl) Max 0.015 % Sulphate (SO4) Max 0.01 % Total nitrogen (N) Max 0.002 % Heavy metal (as Pb) Max 0.0005 % Arsenic (As) Max 0.0002 % Lead (Pb) Max 0.0005 % Calcium (Ca) Max 0.01 % Iron (Fe) Max 0.002 %

Specifications

Assay 99-103 % Sodium (Na) Max 0.005 % Insoluble matter Max 0.01 % Chloride (Cl) Max 0.0005 % Nitrite & nitrate (NO3) Max 0.005 % Calcium (Ca) Max 0.005 % Copper (Cu) Max 0.002 % Iron (Fe) Max 0.001 % Potassium (K) Max 0.005 % Appearance A heavy white crystalline powder

Specifications

Absorption maximum nm 508 - 512 Dye content % Min 85 Loss on drying (at 110°C) % Max 2