Zinc Sulfate → Zinc Stearate

HRID 1808673

Reaction equation

HRID 1808673 reaction equation
S([O-])([O-])(=O)=O.[Zn+2:6].[C:7]([O-:26])(=[O:25])[CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH3:24].[K+].[OH-].[Zn+2].[OH-]>O>[C:7]([O-:26])(=[O:25])[CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH3:24].[Zn+2:6].[C:7]([O-:26])(=[O:25])[CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][CH2:14][CH2:15][CH2:16][CH2:17][CH2:18][CH2:19][CH2:20][CH2:21][CH2:22][CH2:23][CH3:24]

Participants

5

Reactant 3

HCID 24424Zinc SulfateHCID 9812759Zinc HydroxideHCID 23673840Potassium Stearate

Product 1

HCID 11178Zinc Stearate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

In the second precipitation process, a solution of zinc sulfate (0.0163 mol) dissolved in water (100 mL) was added to the mixture of potassium stearate, zinc hydroxide and graphite. This resulted in immediate precipitation of zinc stearate and gave the zinc active mass as a gray precipitate where the zinc stearate, zinc hydroxide and graphite were present as an intimate mixture. This final precipitated mixture was heated to 70° C. and stirred for a further 10 minutes. Upon cessation of stirring, the active mass mixture settled as a uniformly gray material with no stratification consistent with a homogenous mass. After cooling to room temperature, this active mass was filtered and washed with water. The active mass was used immediately without drying.

Sources & evidence

ORD record
ord-fbda4162d2604c8e9afdfc257aae6ea4
Source dataset
uspto-grants-2013_01
Patent number
US08361655B2

Linked notes

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