This document stipulates the basic requirements, technical requirements, test methods, inspection rules, marking, packaging, transportation, storage and quality commitments for refined acrylic acid for industrial use. This document applies to acrylic acid (referred to as purified acrylic acid) that uses propylene as raw material, is produced by catalytic oxidation, and is refined through one or more crystallizations. Chemical structural formula: Molecular formula: CH2CHC00H Relative molecular mass: 72.06 (according to the 2018 international relative atomic mass)