5138-18-1Relevant articles and documents
Preparation method for sulfosuccinic acid
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Paragraph 0006; 0009; 0010; 0012; 0013; 0015; 0016, (2018/06/21)
The invention discloses a preparation method for sulfosuccinic acid, which is characterized in that maleic anhydride is preheated under 70 DEG C to 90 DEG C, and 1.1 to 1.7 equivalent weight of sodiumhydrogen sulfite solution is slowly added into the preheated system; after addition, agitation is continued under 70 DEG C to 90 DEG C for 2 to 10 hours; the obtained reaction solution is sodium sulfosuccinate solution; the solution is added with water, so that 5 to 30 percent of sodium sulfosuccinate solution is prepared, and the sulfosuccinic acid is prepared by strongly acidic ion exchange resin. The advantages of the preparation method are as follows: by the method, a sulfosuccinic acid product, the sodium ion solubility of which is less than 0.05 percent, can be obtained; the materials of the route are simple, the synthetic route is simple and reasonable, the conversion rate of reaction is high, the cost is greatly reduced, and moreover, the whole synthetic route is green and environment-friendly, and is suitable for industrial production.