Rosin (01C, 02C, 03C, 04C, 05C, 06C, 07C, 08C, 09C, 10C, 11C, 12C, 13C, 14C, 15C, 16C)
Rosin
A complex combination derived from wood, especially pine wood.  Composed primarily of resin acids and modified resin acids such as dimers and decarboxylated resin acids.  Includes rosin stabilized by catalytic disproportionation.