D-阿拉伯糖/D-树胶醛糖/D-阿糖/D-阿戊糖/D-（?）-Arabinose

 Description
Biochem/physiol Actions D-Arabinose is a reducing sugar. It is a pentose analog of D-ribose that is a constituent of mycobacterial cell wall arabinogalactans. It is also a substrate for D-erythroascorbic acid synthesis in yeast.

Properties
grade for microbiology
assay ≥99.0% （sum of enantiomers, HPLC）
  ≥99.0%
optical activity [α]20/D −104±2.0°, 24 hr, c = 10% in H2O
ign. residue  ≤0.1% （as SO4）
loss ≤0.1% loss on drying, 20 °C （HV）
mp 156-160 °C
  162-164 °C（lit.）
anion traces chloride （Cl-）: ≤50 mg/kg
  sulfate （SO42-）: ≤50 mg/kg
cation traces As: ≤0.1 mg/kg
  Ca: ≤500 mg/kg
  Cd: ≤5 mg/kg
  Co: ≤5 mg/kg
  Cr: ≤5 mg/kg
  Cu: ≤25 mg/kg
  Fe: ≤5 mg/kg
  K: ≤50 mg/kg
  Mg: ≤5 mg/kg
  Mn: ≤5 mg/kg
  Na: ≤50 mg/kg
  Ni: ≤5 mg/kg
  Pb: ≤5 mg/kg
  Zn: ≤5 mg/kg

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

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