Appearance: Red or red-orange crystal or powder

Purity( salt ) : 99% min.

Content: 90% min.
1-Aminoanthraquinone-2-Sulfonic acid: 0.1% max.

Anthraquinone: 0.1% max

1-Aminoanthraquinone :  0.1% max.

1-Amino-2, 4-dibromoanthraquinone: 0.1% max.

1-Amino- 4-bromoanthraquinone:: 0.2%max.

Moisture: 3% max.

Water insolubles: 0.1% max.

Packing: 25kg /bag