Product line : BioUltra
Assay : ≥ 99.5 % (HPLC)
Optical activity : [α]20/D +53±1°, 22 hr, c=10 % in H2O
Impurities : insoluble matter, passes filter test
Ign. residue       ≤ 0.05 % (as SO4)
pH : 3.5-6.0 (25°C, 0.5 M in H2O)
Solubility : H2O: 0.5 M at 20°C, clear, colorless
Anion traces :
  chloride (Cl-): ≤ 50 mg/kg
  sulfate (SO42-): ≤ 50 mg/kg
Cation traces :
  Al: ≤ 5 mg/kg
  As: ≤ 0.1 mg/kg
  Ba: ≤ 5 mg/kg
  Bi: ≤ 5 mg/kg
  Ca: ≤ 10 mg/kg
  Cd: ≤ 5 mg/kg
  Co: ≤ 5 mg/kg
  Cr: ≤ 5 mg/kg
  Cu: ≤ 5 mg/kg
  Fe: ≤ 5 mg/kg
  K: ≤ 50 mg/kg
  Li: ≤ 5 mg/kg
  Mg: ≤ 5 mg/kg
  Mn: ≤ 5 mg/kg
  Mo: ≤ 5 mg/kg
  Na: ≤ 50 mg/kg
  Ni: ≤ 5 mg/kg
  Pb: ≤ 5 mg/kg
  Sr: ≤ 5 mg/kg
  Zn: ≤ 5 mg/kg
λ : 0.5 M in H2O
UV absorption :
  λ: 260 nm Amax: 0.02
  λ: 280 nm Amax: 0.02