GB 1886.74-2015 English PDF (GB1886.74-2015)

This standard applies to the food additive potassium citrate, which is prepared from citric acid and potassium hydroxide or potassium carbonate. 2 Chemical name, molecular formula, structural formula, relative molecular mass 2.1 Chemical name Potassium 2-hydroxypropane-1,2,3 tricarboxylate 2.2 Molecular formula C6H5K3O7¡¤H2O 2.3 Structural formula 2.4 Relative molecular mass 324.41 (according to 2011 international relative atomic mass) 3 Technical requirements 3.1 Sensory requirements Sensory requirements shall comply with the provisions of Table 1. GB 1886.74-2015 www.ChineseStandard.net ? Buy True-PDF ? Auto-delivery. Page 5 of 8 Table 1 -- Sensory requirements Item Indicators Inspection methods Color White or colorless Take an appropriate amount of sample and place it on a clean, dry white porcelain plate, to observe its color and condition under natural light State Crystalline granules or powder3.2 Physical and chemical indicators The physical and chemical indicators shall comply with the provisions of Table 2. Table 2 -- Physical and chemical indicators Item Indicators Inspection methods Potassium citrate content (on a dry basis), w/% 99.0 ~ 100.5 A.4 in Appendix A Transmittance/%, ¡Ý 95.0 GB 6782 Loss on drying, w/% 3.0 ~ 6.0 GB 5009.3 Direct drying method a Alkalinity Pas