Description
Ammonium acetate, LiChropur™, eluent additive for LC-MS, 25G
Linear Formula:
CH3CO2NH4
CAS Number:
631-61-8
Molecular Weight:
77.08
Beilstein:
4186741
EC Number:
211-162-9
MDL number:
MFCD00013066
eCl@ss:
39021908
PubChem Substance ID:
329765068
NACRES:
NB.21
Quality Level
100
grade
eluent additive for LC-MS
assay
≥99.0% (calc. on dry substance, T)
form
solid
quality
LiChropur™
technique(s)
LC/MS: suitable
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: 1 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
SMILES string
N.CC(O)=O
InChI
1S/C2H4O2.H3N/c1-2(3)4;/h1H3,(H,3,4);1H3
InChI key
USFZMSVCRYTOJT-UHFFFAOYSA-N
General description
Ammonium acetate exists as a white crystal. It is prepared from acetic acid and ammonia by neutralization to pH 7.0. It is widely used in analytical chemistry, drugs and in textile dyeing.
Application
Ammonium acetate has been used to prepare eluents for UPLC-MS/MS and HPLC-MS/MS to compare the matrix effect of 9 pharmaceutical compounds in aqueous environmental samples. It has also been used as an additive to improve detection of phosphopeptides using MALDI-MS.
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Legal Information
LiChropur is a trademark of Merck KGaA, Darmstadt, Germany