Ascorbic acid 2-phosphate metal salt with low calcium content

Abstract

One of the object of the present invention is to provide an L-ascorbic acid 2-phosphate metal salt, which causes no clouding and scarcely precipitates or deposits even when added to a cosmetic material or the like having blended therein an organic acid. Disclosed herein is an L-ascorbic acid-2-phosphate metal salt with a low calcium content characterized in that the content of a calcium compound is 500 ppm or less in terms of calcium ion, and production process thereof.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application, filed under 35 U.S.C. §111(a), requires the filing date of prior application 60 / 275,033, filed under 35 U.S.C. §111(b) on March 13, 2001, to be filed under 35 U.S.C. e)(1) Interests. Detailed description of the invention [0003] industrial applications [0004] The present invention relates to L-ascorbic acid derivatives with reduced calcium content and a preparation method thereof. More specifically, the present invention relates to a low calcium content L-ascorbic acid 2-phosphate metal salt, which can be used as an additive for cosmetic, pharmaceutical, food and feed substances and is widely used in various industrial fields, especially when it is used. When added to a cosmetic containing an organic acid, no turbidity or little precipitation or deposition occurs even during storage of the cosmetic, and a preparation method thereof is also involved. Background technique [0005] So far, L-ascorbi...

AI Technical Summary

Problems solved by technology

[0010] High concentrations of citrate, oxalate, gluconate, or alanine mixed in only slightly retarded precipitation or deposition of APM, although precipitation or deposition of APM was slightly improved by using freeze-dried or spray-dried APM, but not good enough