Specification :

1. Concentrations of contaminants retained on the 45m sieve, % m / m, not more than: 0.08
2. Ash, % m / m, not more than: 0.60
3. Nitrogen content, % m / m, not more than: .60
4. Volatiles content, % m / m, not more than: 0.80
5. Early plasticity ( Po) , not less than: 30
6. Maintain the viscosity index ( PRI) , not less than: 50
7. Index Lovibond color, form, not more than: -
8. Mooney viscosity ML ( 1 ' + 4' ) 1000C