|
ITEM
|
SF325
|
SF400
|
SF500
|
SF600
|
SF800
|
|
Fe3O4 content ≥%
|
80-90
|
80-90
|
80-90
|
80-90
|
80-90
|
|
Water, ≤%
|
0.5
|
0.5
|
0.5
|
0.5
|
0.5
|
|
Water-soluble matter, ≤%
|
1
|
1
|
1
|
1
|
|
|
Sieve residue (325 mesh)%
|
0.3
|
0.7
|
1
|
2
|
3
|
|
Oil Absorption (ml/100g)
|
12-18
|
12-18
|
15-25
|
15-25
|
15-25
|
|
PH
|
5-8
|
5-8
|
5-8
|
5-8
|
5-8
|
|
105 ℃ Volatile Content
|
1
|
1
|
1
|
1
|
1
|
