<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31373735</termId><termName>potassium lactate</termName><termType>PT</termType><termNote><![CDATA[ A potassium salt of lactic acid used to treat leather to counteract acid present in the leather from manufacturing processes or from air pollution; it is also used to safeguard against future incursion of acid or acid-forming material. Some controversy exists over the possible discoloration potassium lactate may cause to leather as well as its overall effectiveness as a leather/acid buffer. ]]></termNote><termCreatedDate>2026-03-30 20:40:47</termCreatedDate><relation><relationType>UF</relationType><termId>31373736</termId><termName>lactate, potassium</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31343456</termId><termName>potassium compounds</termName><termType>PT</termType></relation></term>  </Zthes>