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Merck

00922

Supelco

Difluoroacetic acid

for LC-MS LiChropur, ≥97.5% (GC)

Sinónimos:

DFA

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About This Item

Fórmula lineal:
F2CHCO2H
Número de CAS:
Peso molecular:
96.03
Beilstein/REAXYS Number:
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.

Recommended products

Discover LiChropur reagents ideal for HPLC or LC-MS analysis

Legal Information

LiChropur is a trademark of Merck KGaA, Darmstadt, Germany

Related product

Referencia del producto
Descripción
Precios

pictograms

CorrosionExclamation mark

signalword

Danger

Hazard Classifications

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

Storage Class

8A - Combustible corrosive hazardous materials

wgk_germany

WGK 3

flash_point_f

172.4 °F - closed cup

flash_point_c

78 °C - closed cup


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The article describes the use of difluoroacetic acid (DFA) as an effective alternative to acid modifiers, formic acid (FA) and trifluoroacetic acid (TFA) in the LC-UV/MS analysis of proteins.

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