Patching compounds
Patching compounds are mixtures of talc, pigments, clays, casein, ground marble, mica or other similar materials and a binding material such as asbestos which are sold in a dry form ready to be mixed with water, or such combinations in ready-mix paste form.
Source
16 CFR § 1304.3
Scoping language
The definitions in section 3 of the Consumer Product Safety Act (15 U.S.C. 2052) apply to this part 1304.