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Chromic Chloride
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Magnesium Chloride
Manganese Chloride
Potassium Chloride
Zinc Chloride
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Chromium Chloride, Chromic Chloride Pure & USP Manufacturers, Chromium Acetate, Fluoride, Formate, Nitrate, Oxalate, Picolinate, Polynicotinate, Sulfate Manufacturers
MSDS of Chromium Chloride Chromic Chloride USP
Manufacturers
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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 Chromium Chloride
Chromic Chloride - Chromium Chloride
CrCl3-6H2O 266.45
Chromium chloride (CrCl3) hexahydrate
Chromium(3+) chloride hexahydrate [CAS Number 10060-12-5]
Anhydrous 158.36 [CAS Number 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 105oC 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%).
Iron— Dissolve 1.0 g of Chromic Chloride or Chromium
Chloride in 100 mL of water, and mix. Transfer 10 mL of this
solution to a 100-mL color comparison tube, dilute with water to
45 mL, add 2 mL of hydrochloric acid, and mix (Test
Preparation). Proceed as directed for Procedure, except to add
15 mL of butyl alcohol to the Test Preparation and the Standard
Preparation at the same time that the Ammonium Thiocyanate
Solution is added. Shake for 30 seconds, and allow the layers to
separate: the color in the upper butyl alcohol layer from the
Test Preparation is not darker than that from the Standard
Preparation. The limit is 0.01%.
Assay— Dissolve about 0.4 g of Chromic Chloride or
Chromium Chloride, accurately weighed, in 100 mL of water
contained in a glass-stoppered, 500-mL conical flask, add 5 mL
of 5 N sodium hydroxide, and mix. Pipette, slowly, 4 mL of 30
percent hydrogen peroxide into the flask, and boil the solution
for 5 minutes. Cool the solution slightly, and add 5 mL of
nickel sulfate solution (1 in 20). Boil the solution until no
more oxygen is evolved, cool, and add 2 N sulfuric acid drop
wise until the color of the solution changes from yellow to
orange. Add to the flask a freshly prepared solution of 4 g of
potassium iodide and 2 g of sodium bicarbonate in 100 mL of
water, then add 6 mL of hydrochloric acid. Immediately insert
the stopper in the flask, and allow to stand in the dark for 10
minutes. Rinse the stopper and the sides of the flask with a few
mL of water, and titrate the liberated iodine with 0.1 N sodium
thiosulfate VS to an orange color. Add 3 mL of starch TS, and
continue the titration to a blue-green endpoint. Each mL of 0.1
N sodium thiosulfate is equivalent to 8.882 mg of CrCl3·6H2O.
We also manufacture and supply Chromium Acetate, Fluoride, Formate, Nitrate, Oxalate, Picolinate, Polynicotinate, Sulfate made from virgin metal. |
