Sodium stearate synthesis
- Product Name:Sodium stearate
- CAS Number:822-16-2
- Molecular formula:C18H35NaO2
- Molecular Weight:306.4591
(C18H35O2)3C3H5 → C3H5(OH)3 + 3 C17H35CO2Na
Purified sodium stearate can be made by neutralizing stearic acid with sodium hydroxide.
57-11-4
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822-16-2
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Yield:-
Reaction Conditions:
with anhydrous sodium carbonate;sodium hydroxide at 62 - 80; pH=8.5; under 150.015 - 2250.23 Torr; for 9 h;Inert atmosphere;Temperature;Pressure;pH-value;
Steps:
1
Step S01, the preparation of sodium stearate to prepare raw materials, raw materials comprising: 710 parts of stearic acid, 100 parts of sodium hydroxide flakes, 8.1 parts of sodium carbonate; sodium carbonate, wherein an average particle size of 0.1 m; Step S02, the feeding: the valve closes the passage between the cylinder and feeding the reaction cylinder, the stearic acid was added from the left side of the feeding port feeding cylinder, after mixing sodium hydroxide flakes and sodium carbonate, from the feed cylinder were added right doghouse closing both doghouse, a rotational speed of 30rpm feed cylinder causes the rotation about the center axis 60min, the material mixed, open the sides of doghouse, a valve to open the channel so that mixed material into a reaction tank; Step S03, the reaction: the reaction cylinder closing passage downstream of the valve, a flow rate of 100L / min nitrogen gas is passed into 30min, the continuation of nitrogen through the reaction was kept at 0.3MPa pressure cylinder, turn the temperature control accuracy of 1 circulating water bath heating means at a heating rate of 2 / min was heated to 62°C , sufficient reaction 6h, to give semi-finished products; Step S04, the separation: Step S03 so that the obtained semi-finished product into separate cylinder, to close the valve on the downstream channel, pH = 8.5 PH value measured by the measuring device, open the pressure regulating means, the separation cylinder pressure is maintained at 0.02MPa, activating the heating II apparatus, was heated to 80°C , heat 3h, the moisture evaporated under reduced pressure, to obtain dried sodium stearate; Step S05, Packing: Step S04 so obtained dried sodium stearate into the wrapper, pulverized by pulverizing means into the average particle size of 8μm particles, followed by automatic packaging, i.e., purity of 99.95% sodium stearate finished.
References:
CN106187745,2016,A Location in patent:Paragraph 0040-0046
112-61-8
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822-16-2
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75-75-2
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1912-32-9
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123-95-5
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57-11-4
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822-16-2
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2386-57-4
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22610-61-3
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822-16-2
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822-16-2
535 suppliers
$14.00/5g