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 References to Related Applications [0002] This application is an application filed under 35 U.S.C. § 111(a) requiring the filing date of prior application 60 / 275,033 filed on March 13, 2001 under 35 U.S.C. § 111(b) under 35 U.S.C. § 119( e) interest in (1). Detailed description of the invention [0003] Industrial application field [0004] The present invention relates to L-ascorbic acid derivatives with reduced calcium content and a process for their preparation. More particularly, the present invention relates to metal salt of L-ascorbic acid 2-phosphate with low calcium content, which is useful as an additive for cosmetics, medicine, food and feed substances and is widely used in various industrial fields, especially when it is used as When added to cosmetics containing organic acids, no turbidity or little precipitation or deposition occurs even during storage of cosmetics, and it also relates to its preparation method. Background technique [0005] So...

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