Betadine Price 25655-41-8

Arsenic salt:

Take 1.3g of this product, add 0.5g of calcium hydroxide, mix well, add appropriate amount of water (about 2mL), stir evenly, dry, first burn with low heat to carbonize, then burn at 600℃ to completely ash, cool, add 5mL of hydrochloric acid and 23mL of water, check according to the law, it should meet the regulations (0.00015%).

Nitrogen content:

Take about 0.50g of this product, weigh accurately, and determine according to the nitrogen determination method. Calculated on the dry product, the nitrogen content should be 9.5% to 11.5%.

Iodide ion:

Take about 0.50g of this product, weigh it accurately, put it in a 250mL conical flask, add 100mL of water to dissolve it, add a few drops of sodium bisulfite test solution to make the solution color disappear, add 10mL of nitric acid, accurately add 25mL of silver nitrate titration solution (0.1mol/L), shake well, add 0.5mL of ammonium ferric sulfate indicator solution, and titrate with ammonium thiocyanate titration solution (0.1mol/L) until the solution turns light brick red, and correct the titration result with a blank test. Each 1mL of silver nitrate titration solution (0.1mol/L) is equivalent to 12.69mg of I. Calculate the percentage of total iodine minus the percentage of effective iodine under the content determination item to get the percentage of iodine ion. Calculated on the basis of dry product, the iodine ion content shall not exceed 6.6%.

Content determination: Take about 1g of this product, weigh it accurately, put it in a beaker, add 120mL of water, stir to dissolve, and titrate with sodium thiosulfate titrant (0.1mol/L) according to the potentiometric titration method (Appendix VII A of Part II of the 2010 Pharmacopoeia). Each 1mL of sodium thiosulfate titrant (0.1mol/L) is equivalent to 12.69mg of I.

Hot Tags: betadine price 25655-41-8, China betadine price 25655-41-8 manufacturers, suppliers, factory, Povidone Iodine Heb, Crospovidone Category, PVP-I, Povidone Iodine Usp Chemicals, Povidone Iodine Betadine Chemicals, Povidone Iodine Powder Chemicals