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00922

Supelco

Difluoroacetic acid

for LC-MS LiChropur, ≥97.5% (GC)

Synonym(s):

DFA

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About This Item

Linear Formula:
F2CHCO2H
CAS Number:
Molecular Weight:
96.03
Beilstein:
1098588
MDL number:
UNSPSC Code:
41116004
NACRES:
NB.21

Assay

≥97.5% (GC)
97.5-102.5% (T)

technique(s)

LC/MS: suitable

refractive index

n20/D 1.344 (lit.)

bp

132-134 °C (lit.)

mp

−1 °C (lit.)

density

1.526 g/mL at 25 °C (lit.)

cation traces

Al: ≤5 ppm
Ca: ≤20 ppm
Cu: ≤5 ppm
Fe: ≤2 ppm
K: ≤50 ppm
Mg: ≤5 ppm
Na: ≤50 ppm

suitability

passes test for LC-MS

SMILES string

OC(=O)C(F)F

InChI

1S/C2H2F2O2/c3-1(4)2(5)6/h1H,(H,5,6)

InChI key

PBWZKZYHONABLN-UHFFFAOYSA-N

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General description

Compared to trifluoroacetic acid (TFA), difluoroacetic acid (DFA) exhibits an improved sensitivity in mass spectral detection (ESI) as it has a reduced effect on ion suppression in reversed-phase liquid chromatography (RPLC-MS), while keeping its strong chromatographic performance enhancing effects.

Difluoroaceticacid is used in liquid chromatography-mass spectrometry applications. It is a volatile, low molecular-weight organic acid that improves the ionization and resolution of many molecules.

Application

Difluoroacetic acid can be used as an:
  • Acidifier in liquid chromatography (LC) experiments.
  • Ion-pairing agent in the HILIC-MS (hydrophilic interaction liquid chromatography-mass spectrometry) analysis of intact pharmaceutical glycoproteins.

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Legal Information

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 4 Inhalation - Aquatic Chronic 3 - Eye Dam. 1 - Skin Corr. 1A

WGK

WGK 3

Flash Point(F)

closed cup

Flash Point(C)

closed cup


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Sigma-Aldrich

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