Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by function]

Narrower term/s

• [preservative by composition or origin][+]
  • carbolineum
  • creosote [+]
    • coal tar creosote
  • pentachlorophenol
  • sodium fluoride [NP]
  • sodium pentachlorophenate
• [preservative by function][+]
  • wood preservative [+]
    • acid copper chromate
    • ammoniacal copper arsenate
    • chromated copper arsenate
    • chromated zinc chloride

Anotations

Scope note:

Substance added to materials, natural science specimens, or foodstuffs to preserve them against deterioration, discoloration, or spoilage. In paint or adhesive, prevervatives are nonvolative chemicals added to prevent fermentation and mold growth.