items

Fe2O3
or
Fe3O4

Oil
absorption

Res.on
325 mesh

Water sol.
salts

Moisture

PH

Tamped
apparent
density

ΔE

compared

with std.

Relative
Tinting
strength

%

g/100g

%

%

%

g/cm3

%

%

Red

110/130/190

≥96

15-25

≤0.3

≤0.3

≤1.0

3-7

0.7-1.1

≤0.8

95-105

Yellow

311/313/586

≥86

25-35

≤0.3

≤0.3

≤1.0

3-7

0.4-0.6

≤0.8

95-105

Black

318/330

≥90

15-25

≤0.2

≤0.2

≤1.0

3-7

0.9-1.3

≤0.8

95-105

Green

5605/835

-

20-30

≤0.3

≤3.0

≤1.0

6-9

0.4-0.8

≤0.8

95-105

Orange

960

≥88

20-30

≤0.3

≤0.3

≤1.0

3-7

0.4-0.6

≤0.8

95-105

Brown

610/663

≥88

20-30

≤0.3

≤0.5

≤1.5

4-7

0.7-1.2

≤0.8

95-105