Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by form]
6. [materials by chemical form]
7. compounds (materials)
8. polymers
9. polyethylene glycol

Anotations

Scope note:

A polyethylene glycol in the form of an odourless and non volatile hygroscopic liquid characterised by two hydroxyl groups and three ether linkages. It is a mixture comprising some high and low molecular weight glycols, but consisting mainly of tetraglycol. It has been used in conservation to stabilize waterlogged archaeological wooden objects.