Synonyms: L-(+)-Tartaric acid dipotassium salt; Dipotassium tartrate hemihydrate
Formula: KOOC(CHOH)2COOK · 0.5H2O
Formula Weight: 235.28
CAS No.: 6100-19-2
Purity: 99-102% (perchloric acid titration)
Anion Traces: oxalate (as oxalic acid): ≤100 mg/kg
Assay: 99-102% (perchloric acid titration)
Cation Traces: Cu: ≤10 mg/kg
Impurities: ≤0.001% heavy metals (as Pb)
Loss: ≤4% loss on drying, 150 °C, 4 h
pH: 7-9 (20°C, 0.1%)
Quality: meets analytical specification of DAC, E336