Hydrocarbons, Linear Alcohols and Acids - Densities

The table shows how the liquid density at 20°C (68°F) changes with increasing carbon number for different hydrocarbons, alcohols, and acids. Densities are provided for various classes including alkanes, alkenes, alkynes, cycloalkanes, alcohols, aromatic hydrocarbons, and carboxylic acids.

Compound Class	C1	C2	C3	C4	C5	C6	C7	C8	C9	C10	C11	C12	C13	C14	C15	C16
N-alkane	0.498	0.577	0.630	0.664	0.683	0.702	0.719	0.730	0.740	0.750	0.756	0.760	0.769	0.773
2-methylalkane		0.556	0.620	0.654	0.679	0.698	0.714	0.728	0.737	0.740
3-methylalkane			0.660	0.687	0.705	0.720	0.735	0.742	0.7489
2,2-dimethylalkane		0.590	0.648	0.674	0.691	0.711	0.724
1-alkene		0.510	0.593	0.641	0.673	0.697	0.715	0.733	0.741	0.751	0.758	0.766	0.779	0.776	0.781
2-methylalkene			0.594	0.650	0.680	0.700	0.722	0.734	0.744
1-alkyne		0.611	0.683	0.690	0.719	0.733	0.746	0.766	0.766	0.773	0.779	0.784	0.790	0.794	0.796
Cycloalkane		0.621	0.688	0.746	0.777	0.810	0.831	0.849	0.857
Cycloalkene			0.718	0.772	0.811	0.823	0.848
Alkylcyclopentane		0.749	0.767	0.776	0.785	0.791	0.797	0.801	0.805	0.808	0.811
Alkylcyclohexane		0.770	0.788	0.794	0.800	0.804	0.808	0.811	0.814	0.816	0.819
Alkylbenzene		0.880	0.866	0.866	0.863	0.860	0.859	0.858	0.857	0.856	0.858	0.855
1-alkylnaphthalene			1.025	1.020	1.008	0.990	0.974	0.966	0.957
1-alkanol	0.791	0.789	0.804	0.810	0.814	0.814	0.822	0.829	0.828	0.830	0.830	0.833	0.830	0.836	0.838
2-alkanol		0.785	0.806	0.809	0.816	0.817	0.819	0.830	0.825	0.825	0.829
3-alkanol			0.820	0.818	0.823	0.826	0.825	0.827	0.088	0.829
4-alkanol				0.818	0.819	0.828	0.826
Alkanoic acid	1.220	1.048	0.991	0.956	0.937	0.924	0.916	0.910	0.905	0.898	0.891	0.889	0.889	0.887	0.885	0.883