Sandal, or Sanders the Red, Pterocarpus santalinus, L. a tree which is a native of the East Indies, whence its wood is imported into Britain, in the form of large billets. The best kind is externally of a dull-red, or nearly blackish colour, internally brown-red ; being of a compact texture, and neither a peculiar smell, nor taste.

Red sanders is chiefly employed as a colouring drug, in the coin-pound tincture of lavender ; for there is scarerly any other oil to which it communicates its tinge. When reduced to a fine powder, it is more effectual for dyeing, than if it be merely cut into small pieces ; but the powder of red sanders commonly sold in the shops, is often moistened with acids, and adulterated with other substances. - Bohmer observes, that wool dyed of this wood becomes hard; and that the colour may be rendered much darker, by the addition of common salt and sal-ammoniac dissolved in the ley : - the Dutch are supposed to macerate this tinging substance in urine, for a similar purpose.

Sandal-wood communicates a deep red to rectified spirit, but imparts no tinge to water. - Geof-froy and others have remarked, that the Brazil woods are sometimes substituted for red sanders ; a fraud which may be easily ascertained, by immersing a small portion of the former in water, with which its colour readily combines. - The sandal-wood pays, on importation, a duty of 5s. l 1/2d. per cwt.