TEST ITEMS
SPECIFICATION
APPEARANCE
ORANGE POWDER
SHADE
CLOSE TO STANDARD
CONTENT OF Fe 2 O 3
88% min
pH VALUE
3.5-7
SPECIFIC GRAVITY
4.5 g/cm 3
OIL ABSORPTION
15-25%
RESIDUE ON 320 MESH
0.3% max
WATER SOLUBLE
VOLATITE 105 °C
1.0% max
TINTING STRENGTH
98-102 %
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