activated bleaching earth
molecular formula: H2A12(SiO3)4-nH2O
CAS code: 70131-50-9
The laminated structure exists between molecules. With a great
number of irregular cavities on the surface, it has a large
specific surface area.
Physical & Chemical Characteristics
A kind of hypo-white powder, which is odorless, tasteless and
non-poisonous, the product has a bulk density of 0.7~1.1g/ml.
Having dispersivity, the product feels greasy. It is insoluble to
water, organic solvent, and various oils & lipids.
Additionally, it has strong performance in ion interchange,
selective adsorption, hydrophilicity, surface activity and
catalysis. Upon being heated to over 300°c, the product starts to
lose crystallization water, with its structure subject to changes
and the decolorizing performance affected. In case of long storage
or exposure to moisture, the absorbability can be degraded.
Capable of removing (by absorbing) asphaltene, neutral gelatine,
sulfide, mineral matter of alkene naphthenic acid, and alkaline
nitrogen in the lubricating oil. It improves durability &
optical safety in lubricating oil. It improves durability &
optical safety in lubricating oil as well as enhances anticorrosion
Besides, this product can be used to remove (by absorbing)
pigments, flavacol B1 (AFTB1) and the carcinogenic of 3~4 benzoic
pyrene in animal & vegetable oils.
Rang of Use
1. In refinement of animal & vegetable oils, used for
decolorization and purification to eliminate harmful pigments,
flavacol, phospholipid, saponin, gelatine and cotton acid etc. in
the oil, rendering it into top grade cooking oil.
2. For decolorization & refinement of industry-used animal
& vegetable oils.
3. In petroleum industry, used for decolorization, refinement and
purification of petroleum, grease paraffin, white oil, lubricating
oil, Vaseline and kerosene etc.
4. For recycling and regeneration of industrial waste oils
(including mineral oil, such as machinery oil and lubricating oil
5. For decolorization & depuration of resin.
6. For decolorization & depuration of polyether.
7. In food industry, used as clarificant for monosodium
glutamate vitamin, grape wine, candy juicy, used for stabilizing
treatment of beer, and used for purification of sugar juices.
8. For alkene separation in arene and alkane, cracking of petroleum
and alkene polymerization catalyzed.
Packing, Storage, Transport and Precautions
1. The internal bag is polythene film bag white the external bag is
polypropylene plastic woven bag. Each bag has a net weight of 25kg.
2. Store in a ventilated and dry place. Employ a clean
carrying vehicle for transportation, every effort should be made to
avoid drastic shock, leisurely handling is recommended in loading
& unloading to prevent any damage on the container bag. Guard
against moisture and never expose the product to rains.
3. Due to its strong water absorption, the product can have its
performance lowered by influence from dampness.
Specifications of Activated Bleaching earth
Items of Analysis
For edible oils
For industrial oils
Decolorizing rate (via the burning oil & asphalt approach)
Activity (nacc approach)
Free acid (H2SO4)
Water content before leaving factory
Granularity (over 200 mesh)
Heavy metal (as Pb)
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