Citric Acid → HCID 86744195, compound

Participants

Reaction Steps

Citric acid monohydrate (945 g) and sorbitol (819 g) were dissolved in deionized water (1620 g) and swept slowly with nitrogen. At 22-24°, TiCl4 (855 g) was added dropwise over a two hour and eight minute period, and stirring was continued at 25° for an additional 32 minutes. Aqueous NaOH (4033 g of a 30.3% solution) was added dropwise at 21-28° over a period of about five hours resulting in a pH of 7.5. The product was an aqueous solution which weighed 8240 g and contained 2.62% by weight of titanium. A portion of the product (78.2 g) was withdrawn for density measurement. The remainder of the product was heated to 60±2° over a 35 minute period and maintained at that temperature for two hours. It was cooled to about 25°, giving a pH of 7.1. The aqueous product had a Ti:citric acid:sorbitol mol ratio of 1:1:1.

Provenance & Evidence