[1] This product must be distinguished from stillingia oil,[2] that is extracted from the seeds of those trees.
[3] The fruit of T. sebifera has a characteristic trilobed shape and contains three seeds surrounded by a fibrous waxy coating, which contains the vegetable tallow fat.
The seeds produce 20-30% w/w of tallow fat and 10-17% w/w of stillingia oil.
[1][4] Stillingia tallow is essentially a mixture of triglycerides (esters of glycerol and fatty acids).
However, it is not commonly used for that purpose; and the risk of contamination by the seed oil, which is toxic, is a possible concern.