This standard specifies the product classification, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of anionic fatliquors for leather making. This standard applies to tanneries formulated with one or several oils (natural animal and vegetable oils, mineral oils, synthetic fatty acid esters and their derivatives) as the main raw material, chemically modified, and added with other necessary components. Use anionic fatliquor. This standard does not apply to mineral oil synthetic fatliquors for tanning.