Specification :

* In household chemical products such as Bar Keeper's Friend, some bleaches, and rustproofing treatments.
* In wood restorers where the acid dissolves away a layer of dry surface wood to expose fresh material underneath.
* As an additive to automotive wheel cleaners.
* As a mordant in dyeing processes.
* Vaporized oxalic acid, or a 6% solution of oxalic acid in sugar syrup, is used by some beekeepers as an insecticide against the parasitic Varroa mite.
* As a rust remover in such applications as automotive shops and for the restoration of antiques.
* As a recommended surface pretreatment for stainless steels (surface etch) before application of solid metal or polymer self-lubricating coatings.
* For polishing stones and marble.
* Used in the acid treatment for destroying warts.[citation needed]