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Home >> Products >> China Clay
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China Clay
Chemical
Formula: Al2Si2O5(OH)4
CAS
number: 1332-58-7
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Chemical
Analysis |
SiO2 |
49.81% |
Al2O3 |
32.80 |
TiO2 |
1.34 |
Fe2O3 |
1.1 |
CaO |
0.049 |
MgO |
0.2 |
K2O |
0.69 |
Na2O |
0.31 |
Cr2O3 |
0.015 |
BaO |
0.024 |
P2O5 |
0.093 |
V2O5 |
0.019 |
Loss on ignition |
Ca. 12.0 |
Total |
98.45 |
Physical
Analysis |
Whiteness
(Natural) |
72 % (Compare
with MgCO3) |
Whiteness
(After fired) |
89 % (Compare
with MgCO3) |
Free Silica
(on 300 Mesh)
|
<0.59
% |
pH |
8 |
Water of Plasticity
|
32% |
Bulk Density
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0,9705 gm/cc |
Dry (110 0
C) |
4 % |
Fired (1100
0 C) |
8 % |
Suspension
|
82 % |
Oil Absorption
|
65 % |
Water Absorption
|
38 % |
Free Moisture
|
3% Max |
NOTE:
As China Clay is a
mineral, the properties
and composition of
supplied material
may vary slightly
from the above. |
USES:
China Clay (kaolin)
is used in ceramics,
medicine, coated paper,
as a food additive,
in toothpaste, as
a light diffusing
material in white
incandescent light
bulbs, and in cosmetics.
It is also used in
most paints, glues
and inks. It is also
used as a filler in
the production of
gypsum wall boards.
The largest use is
in the production
of paper, including
ensuring the gloss
on some grades of
paper. Commercial
grades of kaolin are
supplied and transported
as dry powder, semi-dry
noodle or as liquid
slurry.
A more recent, and
more limited use is
as a specially formulated
spray applied to fruits,
vegetables, and other
vegetation to repel
or deter insect damage.
A traditional use
is to soothe an upset
stomach. |
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