NIGROSINE BASE 

Data Sheet
Colour Index No.	C.I Constitution No.	C.A.S No.	ChemicalClass	Appearance
C.I Solvent Black 7	50415:1	8005-02-5	Azine	Smooth powder

Parameters   Grades     C.I Solvent Black 7   OBI  OBL  OBI-LA OBS Ash Content Max 1.5% 1.5% 1.5% 1.5 %           Aniline Content Max < 1% < 1% < 0.20% < 0.5 %           Total Chloride - Max  1.5% 0.2% 1.5 % <1%            Transmittance of 15 ppm solution in methanol at 570 µ wave length 117% ± 2 117% ± 2 117% ± 2  117.0% ± 2           pH 6 ~ 7.5 7 ~ 8 .5 6 ~7.5 7 ~ 8           Volatile Matter 2.0% 2.0% 2.0% 2.0 %           Sieve Residue (In 400 Mesh ) < 0.5% < 0.5% < 0.5% < 0.5              Packing :  In 25 Kgs Net HDPE Bags on   pallets stretch wrapped               In 15/25 Kgs. Net Anirox paper bags on pallets stretch wrapped    In 25 Kgs metal drums for OBS Grade