Carbon Black N550 is recommended to be used in cord layer of tires, sidewall of tires, the rubber material for extrusion or calendered goods.
N550 fits for nature rubber and all kinds of compound rubbers, easy dispersion, could provide rubber well inflexibility, fast extrusion, and smooth surface after extrusion with good reinforcing intensity, elasticity, and recovering intensity. It's better to mix with N660 when the N550 is used in butyl rubber (PIBI) inner tube.
| Specification | Value |
| Appearance | Black granular |
| Iodine Absorption, g/kg | 39-74 |
| CATB Absorptive Specific Surface Area, 103 m2/kg | 38-46 |
| DBP Absorption, 10-5 m3/kg | 116-126 |
| Absorptive Specific Surface Area, 103 m2/kg | 38-46 |
| Tinting Strength, % | --- |
| Compressed Sample DBP Absorption, 10-5 m3/kg | 83-93 |
| Heat Loss, % | 1.5 max. |
| Ash, % | 0.5 max. |
| Residue on 45μm Sieve, % | 0.1 max. |
| Residue on 500μm Sieve, % | 0.001 max. |
| 300% Modulus at a Definite Elongation, MPa | -2.0-0.0 |
