(2-tert-Butyl-5-hy­droxy­methyl-1,3-dioxan-5-yl)methanol

In the title compound, C10H20O4, the dioxane ring adopts a chair conformation. The tert-butyl group occupies an equatorial position, and is staggered with respect to the O atoms of the dioxane ring. In the crystal, mol­ecules are connected by O—H⋯O hydrogen-bonds into zigzag chains of R44(8) and R22(12) ring motifs that run parallel to the a axis.