This document specifies the requirements, test methods, inspection rules, packaging, marking, transportation, storage and use of non-ionic cellulose ether by-product industrial sodium chloride. This document applies to industries where wastewater from the production of non-ionic cellulose ethers (hydroxypropyl methylcellulose, hydroxyethyl methylcellulose, methyl cellulose and other non-ionic cellulose ethers) is a by-product of processes such as evaporation and crystallization. Sodium chloride.