SPECIFICATIONS OF LAKE INDIGO CARAMINE
Sr. No.
Test
Limits
1.
Appearance
Blue Colour 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
NMT 20 ppm
10.
Lead
