Kieselguhr, soda ash flux-calcined
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Kieselguhr, soda ash flux-calcined
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CAS No:
68855-54-9
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Chemical Name:
Kieselguhr, soda ash flux-calcined
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Synonyms:
Kieselguhr,soda ash flux-calcined;Diatomaceous earth,flux-calcined
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CAS No:
Description
white to off-white powder Amorphous silica, the noncrystalline form of SiO2, is a transparent to gray, odorless, amorphous powder
Characteristics
63.2
0.00000
965 rod (1/8")
0.47 g/cm3 (loose weight)(lit.)
>450℃
Decomposes
Insoluble in water.
Store at RT.
Safety Information
NONH for all modes of transport
2
48/20-49-36/37-36/38-45-36/37/38
22-36-26-53-45-36/37/39-39
VV7311000
T,Xn
Dry. Well closed. Separated from incompatible materials. See Chemical Dangers.
Stable at ordinary temperature and atmospheric conditions; dries out somewhat in warm, dry air or above 50 deg C /Sodium carbonate monohydrate/
P261-P305 + P351 + P338
H373
Kieselguhr, soda ash flux-calcined Use and Manufacturing
Natural powder is obtained by classification and screening of diatom debris after air drying (<800℃). Gray to beige. The calcinable powder is made by air drying, sieving and calcining at high temperature (815 ~ 982 ℃), and then classification. It is pink to off-white. The molten and calcined powder (white) is air-dried and sieved, and it is obtained by proper melting and calcination (800-1200°C) in the presence of flux (soda ash or other alkali salts) and classification. The acid powder is made by one of the above three kinds of powders after further pickling and water showering and drying.
Celite (R) 545 AW was used as stationary phase in purification of fagopyritols using preparative chromatography.Celite (R) 545 AW was used as packing material for fractionating procedure and the fractions were analysed using GC-ECD, GC/ECNI-MS 2 and IC-MS/MS.
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