Chromic Chloride Hexahydrate

Chromic Chloride

Chromic Chloride - Chromium Chloride CrCl3-6H2O 266.45 Chromium chloride (CrCl3) hexahydrate Chromium(3+) chloride hexahydrate [10060-12-5] Anhydrous 158.36 [10025-73-7] Chromium Chloride - Chromic Chloride or Chromium Chloride contains not less than 98.0 percent and not more than 101.0 percent of CrCl3-6H2O

Specifications of Chromium Chloride or Chromic Chloride: Chromic Chloride or Chromium Chloride contains not less than 98.0 percent and not more than 101.0 percent of CrCl3 6H2O. Insoluble matter 0.01%). Substances not precipitated by ammonium hydroxide (0.20% as sulfate). Sulfate (0.01%). Iron The limit is 0.01%. Chromic Chloride USP Grade Chromium Chloride Specifications Chromic Chloride - Chromium Chloride CrCl3-6H2O 266.45 Chromium chloride (CrCl3) hexahydrate Chromium(3+) chloride hexahydrate [CAS 10060-12-5] Anhydrous 158.36 [CAS 10025-73-7] Chromium Chloride - Chromic Chloride or Chromium Chloride contains not less than 98.0 percent and not more than 101.0 percent of CrCl3-6H2O Identification A: To 5 mL of a solution (1 in 250) in a test tube add 1 mL of 5 N sodium hydroxide and 10 drops of 30 percent hydrogen peroxide, and heat gently for about 2 minutes: a yellow color develops. B: To 5 mL of a solution (1 in 250) in a test tube add 5 drops of silver nitrate TS: a white, curd like precipitate is formed, and it is insoluble in nitric acid. Insoluble matter Transfer 10 g to a 250-mL beaker, add 100 mL of water, cover the beaker, and heat to boiling. Digest the hot solution on a steam bath for 30 minutes, and filter through a tarred filtering crucible of fine porosity. Rinse the beaker with hot water, passing the rinsing through the filter, and wash the filter with hot water until the last washing is colorless. Dry the filter at 105C the weight of the residue does not exceed 1 mg (0.01%). Substances not precipitated by ammonium hydroxide Dissolve 2.0 g of Chromic Chloride or Chromium Chloride in 80 mL of water, heat the solution to boiling, and add a slight excess of ammonium hydroxide. Continue heating to remove the excess ammonia, cool, dilute with water to 100.0 mL, and mix. Pass through a retentive filter, and transfer 50.0 mL of the clear filtrate to an evaporating dish that previously has been ignited and tarred. Add 0.5 mL of sulfuric acid to the filtrate, evaporate on a steam bath to dryness, heat gently to remove the excess acid, and ignite gently: the weight of the residue does not exceed 2.0 mg (0.20% as sulfate). Sulfate Prepare a test solution by dissolving 2.0 g in 10 mL of water. Add 1 mL of 3 N hydrochloric acid, filter if necessary to obtain a clear solution, wash the filter with two 5-mL portions of water, and dilute with water to 40 mL. Prepare a control solution in a similar manner, but use 1.0 g of the substance under test, and after the filtration step add 0.10 mL of 0.020 N sulfuric acid. To each solution add 3 mL of barium chloride TS, mix, and allow to stand overnight. Decant most of the supernatants, without disturbing the precipitates, but leaving twice the volume of liquid in the control solution as in the test solution. Dilute each solution with water to 25 mL, and sonicate for 1 minute: any turbidity in the test solution does not exceed that in the control solution (0.01%).

Chromic Chloride

Chromic Chloride

Chromic Chloride