DIATOMACEOUS EARTH
Prepared at the 55th JECFA (2000) and published in FNP 52 Add 8 (2000), superseding tentative specifications prepared at the 21st JECFA (1977) and published in NMRS 57 (1977) and in FNP 52 (1992). No ADI was allocated the 21st JECFA (1977)
SYNONYMS Diatomaceous silica, Diatomite
DEFINITION Consists of the processed siliceous skeletons of diatoms; produced as a dried, natural powder, as a calcined powder or as a flux-calcined powder.
C.A.S. number Natural and calcined powder 61790-53-2
Flux-calcined 68855-54-9
DESCRIPTION Dried, natural powder: off-white to light grey.
Calcined powder: pink to light brown or light yellow to light orange.
Flux-calcined powder: white to pink or light brown.
FUNCTIONAL USES Filtering aid
