| abstract |
process for preparing an excipient suitable for pharmaceutical use. The present invention relates to a process for purifying diatomaceous earth where the natural colloidal structure of the material is retained, which comprises preparing a suspension of diatomaceous earth in a liquid where diatomaceous earth is unchangeable, separating diatomaceous earth from suspension, treatment of diatomaceous earth with an inorganic or organic acid, heat treatment of product thus obtained at a temperature not exceeding 300 ° C, subjection of product obtained to oxidative treatment and drying of purified product. The invention also relates to a product obtainable by the process mentioned above. |