Is sodium gluconate soap safe for facial skin? Is sodium gluconate soap good or bad for the skin? Understand the ingredients, including the production process and synthesis method of sodium gluconate soap.
At present, among the soap particles in base oils and chemical products, soap particles or soaps usually produce peculiar smell or discoloration due to the oxidation of unsaturated fatty acids by trace metal ions. In the production process, metal chelating agents are usually added to chelate soap particles or potential trace heavy metal ions in soap, which can prolong the shelf life of soap and soap and soften water quality.
At present, most soap products are made of carboxylate chelators, which have both amino and carboxyl groups. At present, there are dozens of ammonia carboxyl coordination agents studied, among which edta-4na and edta-2na are the most widely used. Under the condition of soap alkali (ph10-11), heavy metal iron ions (trivalent) are easy to form iron hydroxide. Chelation is not required during precipitation and precipitation, which affects its chelation. Therefore, under alkaline conditions, the results show that the solution of the complex is not affected by the precipitation of the complex. For the chelation of heavy metal iron, the use of ammonia chelator can not meet the chelation requirements.
However, after chelating with heavy metal ions, the chelates can not be degraded by biochemical treatment. They are always in the soil. With the extensive use of soap products and the accumulation of time, it is bound to cause great pollution to the soil and destroy the whole ecological environment.
In order to overcome the shortcomings and shortcomings of the prior art, soap particles containing organic sodium gluconate with organic sodium gluconate as the main metal ion chelating agent replace the ammonia carboxyl chelating agent with strong gold chelation. Metal ions are wrapped in chelating agent to form stable macromolecular compounds, so as to prevent the action of metal ions and avoid the oxidation of heavy metal ions into soap particles, resulting in deterioration and odor.
In addition, organic sodium gluconate and its chelate are natural chelating agents, which have no irritation to human skin, high safety, environmental protection and biodegradability, and improve the environmental friendliness of soap particles.
Soap particles containing organic sodium gluconate were prepared by the following steps:
(1) : add refined glycerol and refined salt into deionized water accounting for 25-35% of the total weight of deionized water, and mix evenly to obtain phase a;
(2) : add metal chelating agent into the remaining deionized water by weight, stir, mix and dissolve to obtain phase B;
(3) : the fatty acid, liquid alkali, phase A and phase B obtained in step (1) and step (2) are respectively sent to the continuous saponification system by weight by the metering pump. The mixture is premixed in the mixer and 55-65% saponification reaction is completed at 80-90 ℃;
(4) : the soap liquid from the premixer is partially saponified from the premixer and sent to the continuous saponification tank for continuous saponification reaction. The saponification temperature is controlled at 105-125 ℃ to prepare soap base;
(5): the soap base vacuum spray drying process (4) was prepared to obtain soap with water content of 10-13%. Then the soap was refined, extruded, cut and granulated to prepare soap particles containing sodium gluconate.