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00307 Sigma-Aldrich

ADA

BioUltra, ≥99.0% (T)

Synonym: N-(2-Acetamido)iminodiacetic acid, N-(Carbamoylmethyl)iminodiacetic acid

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Properties

Related Categories Alphabetical, BioUltra Buffers, Biochemicals and Reagents, Biological Buffers, Zwitterionic More...
InChI Key   QZTKDVCDBIDYMD-UHFFFAOYSA-N
product line   BioUltra
assay   ≥99.0% (T)
impurities   insoluble matter, passes filter test
ign. residue   ≤0.1%
loss   ≤0.5% loss on drying, 20 °C (HV)
pH   1.5-3.0 (25 °C, 0.01 M in H2O)
useful pH range   6.0 - 7.2
pKa (25 °C)   6.6
mp   219 °C (dec.)(lit.)
solubility   H2O: 0.05 M clear, colorless
anion traces   chloride (Cl-): ≤1000 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: ≤500 mg/kg
  Ni: ≤5 mg/kg
  Pb: ≤5 mg/kg
  Sr: ≤5 mg/kg
  Zn: ≤5 mg/kg
λ   0.05 M in H2O
UV absorption   λ: 260 nm Amax: 0.20
  λ: 280 nm Amax: 0.05

Description

Application

Biological buffer component with sodium hydroxide and sodium chloride (pH 5.67-7.57, useful pH range 6.4-7.4). Used to prepare immobilized pH gradients.

ADA, or N-(2-Acetamido)iminodiacetic acid, can be used to study biological buffers and zwitterionic compounds. ADA has been used in a study to describe the application of scanning capacitively coupled contactless conductivity detection (SC(4)D) for the determination of pH dependant behaviour of two aminopolycarboxylates immobilised onto the surface of a monolithic capillary column.

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Interactive Buffer Table
Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
3
Protocols & Articles

Related Content

BioUltra Biological Buffers

A buffer, as defined by Van Slyke [1], is "a substance which by its presence in solution increases the amount of acid or alkali that must be added to cause unit change in pH". Buffers are thus very i...
Keywords: Absorption, Adsorption, Biochemistry, Biological Buffers, Biological processes, Buffers, PAGE

Peer-Reviewed Papers
15

References

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