| Property |
Bleached
Cotton Linters |
Purified
& Unbleached Cotton Linters Grade-V |
Grade
I
|
Grade
II
|
Grade
III
|
Grade
IV
|
| 1.
Alpha cellulose content % by mass |
98.5%
Min. |
98.5%
Min. |
98.0%
Min. |
98.5%
Min. |
98.5%
Min. |
| 2.Moisture
content % by mass |
7% |
7% |
7% |
7% |
7% |
| 3.
Ash content mineral matter content % by mass |
0.12%
Max. |
0.25%
Max. |
0.25%
Max. |
0.30%
Max. |
0.5%
Max. |
| 4.Degree
of polymerisation(DP) |
900-1300 |
900-1900
|
900-1300
|
2500
Min. |
2665
Min. |
| 5.Viscosity
in cps in 0.5% Cuprammonium solution by Shirley Institute Test
Method. |
5.7
to 11cps |
5.7
to 22.2cps |
5.7
to 11cps |
40
cps
Min. |
50
cps
Min. |
| 6.Acidity/Alkalinity
|
Nil |
Nil |
Nil |
Nil |
Nil |
| 7.
Iron Content ppm |
15
ppm
Max. |
30
ppm
Max. |
30
ppm
Max. |
30
ppm Max. |
40
ppm
Max. |
| 8.
Matter soluble in 3 % boiling alkali (3% soda solubility) |
2.5%
Max. |
3.0
%
Max. |
2.5
%
Max. |
3.5
%
Max. |
3.5
%
Max. |
| 9.
Ether soluble matter (% by mass) |
0.25%
Max. |
0.30%
Max. |
0.50%
Max. |
0.50%
Max. |
0.50%
Max. |
| 10.Hydrophility(in
secs) |
2
Sec
Max. |
2
Sec
Max. |
3
Sec
Max. |
3
Sec
Max. |
5
Sec
Max. |
| 11.
Sulphuric Luminosity |
400+/-50 |
- |
- |
- |
- |
| 12.
Iso Brightness |
79
Min. |
- |
75
Min. |
60
Min. |
- |
