二水柠檬酸钠三元

 性质
grade puriss.
assay 99-100.5% (calc. to the dried substance)
quality meets analytical specification of Ph. Eur., BP, USP, FCC, E331
total impurities Residual solvent, in accordance
  acidity or alkalinity, complies
  ≤0.0005% heavy metals (as Pb)
  ≤0.04% free alkali (as NaOH)
  ≤0.06% free acid (as C6H8O7)
  11.0-13.0 water (Karl Fischer)
loss 11-13% loss on drying, 180 °C, 18 h
pH 7.5-9.0 (20 °C, 5%)
mp >300 °C(lit.)
anion traces chloride (Cl-): ≤30 mg/kg
  oxalate (as oxalic acid): ≤100 mg/kg
  sulfate (SO42-): ≤50 mg/kg
  tartrate (C4H4O62-): in accordance
cation traces As: ≤1 mg/kg
  Cu: ≤10 mg/kg
  Fe: ≤10 mg/kg
  Hg: ≤1 mg/kg
  Pb: ≤1 mg/kg
  Zn: ≤10 mg/kg
suitability alkaline for reaction against litmus
  complies for appearance of solution
  complies for reaction against H2SO4

安全性
Personal Protective Equipment Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter
WGK Germany 1