Degras is the grease-laden residue recovered from the scouring of raw wool, consisting primarily of lanolin-related compounds mixed with dirt, suint, and processing chemicals. After further refining, it is used as a leather-dressing agent, a lubricant base, and a raw material for lanolin derivatives. Its classification under 152200 depends on its character as a processing residue rather than a refined or purified fat or wax product.

The key distinction is the residue or by-product character of the material: heading 152200 covers unrefined or minimally processed residues generated during fat, oil, or wax processing, not the primary refined products themselves. If a material has been further processed to yield a defined, purified fat, oil, or wax, it will likely fall under a more specific heading such as 1516 or 1521. Importers should obtain a detailed technical description and processing history from the supplier to support correct classification.