Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by composition]
6. organic material
7. soap (organic material)

Narrower term/s

• Castile soap[+]
  • Marseilles soap

Anotations

Scope note:

A principal class of soap that is created using fatty acids that are longer and tend to dissolve more slowly in water than soft soaps; for example, olive oil and caustic soda lye would be used to create a hard soap.