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 Description
Biochem/physiol Actions L-Arabinose is the naturally occurring isomer and is a constituent of plant polysaccharides. Most bacteria contain an inducible arabinose operon that codes for a series of enzymes and transporters that allows L-arabinose to be used as the sole carbon source in microbial culture.

Properties
product line BioUltra
assay ≥99.5% （sum of enantiomers, HPLC）
optical activity [α]20/D +104±1°, 24 hr, c = 10% in H2O
total impurities insoluble matter, passes filter test
ign. residue  ≤0.1%
loss ≤0.1% loss on drying
pH 4-7 （25 °C, 1 M in H2O）
mp 155-158 °C
  160-163 °C（lit.）
solubility H2O: 1 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: ≤20 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 1 M in H2O
UV absorption λ: 260 nm Amax: 0.05
  λ: 280 nm Amax: 0.04

Safety
Personal Protective Equipment Eyeshields, Gloves, type N95 （US）, type P1 （EN143） respirator filter
WGK Germany 3

References
reference Khlebnikov, A., et al. , Modulation of gene expression from the arabinose-inducible araBAD promoter. J. Ind. Microbiol. 29, 34-37, （2002）
Beilstein Beil. 1,IV,4217 / Beil. 31,32
  FT-IR 1 （1）, 188:D / FT-IR 2 （1）, 273:C / FT-NMR 1 （1）, 293:B / IR-Spectra （2）, 106:C / IR-Spectra （3）, 114:E / NMR-Reference 2 （2）, 906:A / RegBook 1 （1）, 189:K / Sigma FT-IR 1 （1）, 1046:A / Structure Index 1, 25:B:8

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