What does Titan’s density suggest about its interior composition?

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Titan Titan, moon of Saturn, photographed by Voyager 2 on August 25, 1981, at a distance of 907,000 km (564,000 miles). Green and violet images were combined to make this photograph, which shows the extended atmosphere of the satellite.

Titan, the largest moon of Saturn, has a mean density of 1.88 grams per cubic cm. This relatively low density indicates that its interior is composed of a mixture of rocky materials, specifically silicates, and various ices. These ices are believed to consist primarily of water ice, likely combined with frozen ammonia and methane.1