Laserfiche WebLink
Iridite ZDG Activator #113076 Page 3 <br /> Procedure: <br /> 1. Pipette 50 ml of operating bath into a 250 ml Erlenmeyer flask <br /> 2. Add 3-5 drops of Phenolphthalein indicator <br /> 3. Titrate to the pink/red endpoint with 1 N Sodium Hydroxide (with <br /> Sodium Citrate). <br /> Calculation: <br /> MIs of 1 N Sodium Hydroxide X 0.57 = % by volume of Iridite ZDC Activator <br /> Titration —Oxidation Method <br /> (This method is used if the pH is adjusted to work outside the normal make up <br /> pH of the Iridite ZDC Activator) <br /> Reagents: <br /> • Potassium Permanganate 0.1 N <br /> • Oxalic Acid 0.1 N <br /> • Acid mixture [95 ml Sulphuric Acid (96%) + 5 ml Phosphoric Acid (85%)] <br /> Procedure: <br /> 1. Pipette 2 ml of the working solution to be analyzed and place in a 250 ml <br /> Erlenmeyer flask. <br /> 2. Add exactly 50 ml of Potassium Permanganate 0.1 N <br /> 3. Heat to 60-70 eC and react for 5 minutes <br /> 4. Cool the solution before adding 5m] of the acid mixture. <br /> 5. Heat to 60- 70 OC and add exactly 50 ml Oxalic Acid 0.1 N. <br /> 6. React the solution until it becomes colorless. <br /> 7. Titrate, while keeping the solution under heat, with Potassium <br /> Permanganate 0.1 N until a pink color is maintained. <br /> Calculation: <br /> ml/L Iridite ZDC Activator = ml Potassium Permanganate 0.1 N x 2.75 <br /> 5. SAFETY & WARNING <br /> MacDermid, Inc. recommends that the company/operator read and review the <br /> MacDermid Material Safety Data Sheet(s) for the appropriate health and safety <br /> warnings before use. <br /> Material SafetV Data Sheets are available from MacDermid Incorporated. <br /> I`'I�f��j�' I�1..I l rl'1I 02 Pq <br /> Telephone:800325J1158 Fax: 2035757990&desnc.,245 Reighl Steel. honder Fax::CT ,M3575-5916 <br /> lJ L'alJ LILr V�Il ll w neacdermid.core <br />