73594 Sigma-Aldrich

Ammonium acetate

for mass spectrometry, eluent additive for LC-MS

  • CAS Number 631-61-8

  • Linear Formula CH3CO2NH4

  • Molecular Weight 77.08

  •  Beilstein Registry Number 4186741

  •  EC Number 211-162-9

  •  MDL number MFCD00013066

  •  PubChem Substance ID 329765068

  •  eCl@ss 39021908



Related Categories Analytical Reagents, Analytical/Chromatography, Chromatography Reagents & Solvents, LC-MS Additives & Reagents, LC-MS Mobile Phase Additives,
grade   eluent additive for LC-MS
  for mass spectrometry
assay   ≥99.0% (calc. on dry substance, T)
form   solid
impurities   insoluble matter, passes filter test
  ≤1% water
ign. residue   ≤0.01% (as SO4)
pH   6.2-7.5 (25 °C, 1 M in H2O)
mp   110-112 °C (dec.)(lit.)
solubility   H2O: soluble1 M at 20 °C, clear, colorless
anion traces   chloride (Cl-): ≤5 mg/kg
  nitrate (NO3-): ≤10 mg/kg
  sulfate (SO42-): ≤10 mg/kg
cation traces   Al: ≤1 mg/kg
  As: ≤0.1 mg/kg
  Ba: ≤1 mg/kg
  Bi: ≤1 mg/kg
  Ca: ≤5 mg/kg
  Cd: ≤1 mg/kg
  Co: ≤1 mg/kg
  Cr: ≤1 mg/kg
  Cu: ≤1 mg/kg
  Fe: ≤1 mg/kg
  K: ≤5 mg/kg
  Li: ≤1 mg/kg
  Mg: ≤1 mg/kg
  Mn: ≤1 mg/kg
  Mo: ≤1 mg/kg
  Na: ≤5 mg/kg
  Ni: ≤1 mg/kg
  Pb: ≤1 mg/kg
  Sr: ≤1 mg/kg
  Zn: ≤1 mg/kg
λ   1 M in H2O
UV absorption   λ: 260 nm Amax: ≤0.015
  λ: 280 nm Amax: ≤0.010
suitability   passes test for LC-MS


Other Notes

Same product — same quality — now Sigma-Aldrich brand

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Suggested Laboratory Gloves

Laboratory GlovesThis substance has been tested against several types of hand protection for CE compliance. Click below to find the recommended gloves for handling this product.

Safety & Documentation

Safety Information

UN 3077 9 / PGIII
WGK Germany 
Protocols & Articles


Impact of Mobile Phase Additives on LC-MS Sensitivity, Demonstrated using Spice Cannabinoids

The article stresses the importance of using the highest quality solvents and reagents, along with high efficiency HPLC columns and effective sample prep methods, to provide the best MS data.
Xiaoning Lu, Craig Aurand, and David S. Bell
Reporter US, Volume 30.3
Keywords: Buffers, Forensic, Fractionation, High performance liquid chromatography, Ion Exchange, Liquid chromatography mass spectrometry, Mass spectrometry, Metabolites, Phase transitions, Sample preparations, Separation, Solid phase extractions, Solvents

Improved Recovery of Fungicide Carbendazim from Orange Juice

The fungicide carbendazim can sometimes be used to combat mold on citrus fruits including oranges. Recently, low residue levels of the fungicide were reported to be present in bulk orange juice impor...
Olga Shimelis and Emily Barrey
Reporter US Volume 30.2
Keywords: Chromatography, Fungicides, High performance liquid chromatography, Liquid chromatography mass spectrometry, Mass spectrometry, Sample preparations

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