API gravity Sulfur, wt. % 2.6 10.0 5.3 8.4 5.9 8.4 6.7 8.4 6.1 8.0 5.7 7.8 4.2 7.4 6.8 7.7 7.8 7.4 9.5 8.0 6.0 6.5 6.1 6.2 7.1 6.5 7.7 6.4 12.2 6.8 11.6 6.2 12.2 6.3 12.4 5.5 14.6 5.8 15.3 5.0 15.9 5.6 16.4 5.3 17.5 5.6 17.7 5.1 17.8 4.6 18.6 4.6 18.5 4.1 18.1 3.1 16.6 3.6 16.3 3.3 17.7 2.9 18.3 2.5 19.3 3.5 20.0 3.4 20.0 3.0 19.8 4.0 20.4 4.5 20.9 3.7 21.0 3.0 22.3 2.5 22.6 2.3 22.2 2.1 24.3 2.6 24.7 2.5 28.9 1.8 30.3 2.0 32.0 1.4 32.0 1.2 33.2 0.8