mp >300 °C(lit.)  solubility water: soluble29.4 g/ L at 20 °C  (completely)  anion traces chloride (Cl $^{-}$):  ≤0.003%  sulfate (SO$_{4}$ $^{2-}$):  ≤0.005%  cation traces Ca: ≤0.005%  Fe: ≤5 ppm  Sodium citrate dibasic sesquihydrate, purum p.a., ≥99.0%  (T) , 1kg  grade purum p.a.  assay ≥99.0% (T)  pH 4.6-5.2 (25 °C,  50 mg/mL in H$_{2}$O)  solubility water: 2  August 2020 EN-c4f_annexiitechspeciiitechoffer_en.docx  EN-c4f_annexiitechspeciiitechoffer_en.docx Page 40 of 76 