Acetic Acid → chromium (VI) acetate

HRID 435431

Reaction equation

HRID 435431 reaction equation
[Cr+6].[Cr:2](O[Cr]([O-])(=O)=O)([O-])(=O)=O.[K+].[K+].[C:13]([OH:16])(=[O:15])[CH3:14]>O>[C:13]([O-:16])(=[O:15])[CH3:14].[Cr+6:2].[C:13]([O-:16])(=[O:15])[CH3:14].[C:13]([O-:16])(=[O:15])[CH3:14].[C:13]([O-:16])(=[O:15])[CH3:14].[C:13]([O-:16])(=[O:15])[CH3:14].[C:13]([O-:16])(=[O:15])[CH3:14]

Participants

5

Reactant 3

HCID 176Acetic AcidHCID 24502Potassium DichromateHCID 29131Chromium(6+)

Product 1

HCID 20490200chromium (VI) acetate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

Chromium (VI) Micelle: Weighed 17 grams of potassium dichromate (K2CrO4), and added to a 4 liter beaker. Dissolved the contents of the beaker in 200 ml of distilled water and added 25 ml of glacial acetic acid to produce chromium (VI) acetate in solution. Added 100 grams of chrysotile asbestos (Union Carbide, high purity, grade 7), and diluted to 3.5 liters with distilled water. Added 400 ml of 1 N sodium hydroxide. Heated at 100° C. for 30 minutes. Allowed to cool and collected by the vacuum filtration using a Whatman #1 filter. A pale green product was obtained and allowed to air dry for 16 hours. The filter cake was dried at 330° F. for 90 minutes. The dry cake was fiberized by use of a blender at high speed for 1 minute. A sample of the product was completely dissolved for analysis by treatment with 20% by weight sodium peroxide at 850° C. Elemental analysis of the product is shown in Table I. HF insoluble matter increased to 45% compared to 8.6% for an untreated chrysotile sample as shown in Table II.

Sources & evidence

ORD record
ord-ae464f17d3044711aa5799f8351a9520
Source dataset
uspto-grants-1983_08
Patent number
US04401636

Linked notes

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