Sr. No.

Test 

Limits

1.

Description

Maroon Coloured powder 

2.

Solubility 

Insoluble in water

3.

Bulk Density (g/ml)

NMT 0.2 

4.

Partical size 

NLT 75 % should pass through 300 mesh sieve 4 to 6

5.

pH(2% slurry in D.I water)

4 to 6 

6.

Bleeding (on dry basis) 

LT 0.01 x Total dye

7.

Dye content

NLT 11% 

8.

Arsenic 

NMT 2ppm 

9.

Heay metals and 

NMT 20 ppm

10.

Lead 

NMT 20 ppm