Disodium stannous citrate

Chemical Properties

White crystals. Soluble in water, easy to absorb moisture and deliquescence. It is easily oxidized, begins to decompose at 250 ℃, turns yellow at 260 ℃, and turns brown at 283 ℃. Oral LD₅₀2.7g/kg for mice, ADI does not require special regulations.

Uses

Disodium stannous citrate is a reducing agent with antioxidant, color protection and antiseptic properties. It can be used in canned fruits and vegetables, mushrooms, and the maximum usage is 0.3g/kg.

Uses

Reducing agent; color-preserving agent; anti-corrosion agent.

Synthesis

The solution of citric acid and stannous chloride was added with sodium hydroxide under stirring, and suction filtration to obtain distannous citrate solution; then add citric acid to give stannous citrate; then add sodium hydroxide to neutralize to obtain the prduct,Disodium stannous citrate.

Physiological effects

Disodium stannous citrate has antioxidant, color-protecting effects, and low toxicity. Its color-protecting effect is better than that of common color-protecting agents such as citric acid, ascorbic acid, and sodium erythorbate, and is comparable to sulfite. At present, the research on the color protection of disodium stannous citrate mainly focuses on canned fruits and vegetables, and there is no research report on the color protection of olive juice.