Heptafluorobutyric acid

≥99.0% (GC)

Edman Reagent No. 3, HFBA, Perfluorobutyric acid
Linear Formula:
CAS Number:
Molecular Weight:
Beilstein/REAXYS Number:
EC Number:
MDL number:
PubChem Substance ID:

vapor density

7 (vs air)

Quality Level

vapor pressure

~10 mmHg ( 25 °C)


≥99.0% (GC)

analyte chemical class(es)

amino acids

refractive index

n20/D 1.3 (lit.)


120 °C/755 mmHg (lit.)


1.645 g/mL at 25 °C (lit.)

SMILES string




InChI key


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Other Notes

In protein sequencing with converted Beckman gas-liquid phase sequencer



Signal Word


Hazard Statements

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


UN 3265 8 / PGI

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

A S Bhown et al.
Analytical biochemistry, 175(1), 39-51 (1988-11-15)
As an effective aid to extend the microsequencing capabilities the Beckman protein/peptide sequenator Series 890C has been successfully converted to a gas-liquid system, in which coupling buffer 25% trimethylamine was employed as a gas, and heptafluorobutyric acid as a liquid....
Ulrika Eriksson et al.
Environmental science and pollution research international, 20(11), 7940-7948 (2013-04-17)
Diet and drinking water are suggested to be major exposure pathways for perfluoroalkyl substances (PFASs). In this study, food items and water from Faroe Islands sampled in 2011/2012 were analyzed for 11 perfluoroalkyl carboxylic acids (PFCAs) and 4 perfluoroalkane sulfonic...
Yuko Murakami et al.
Organic & biomolecular chemistry, 12(48), 9887-9894 (2014-10-31)
Desmosine-CH2, an analog of the elastic tissue degradation biomarker desmosine, can be regarded as a potential internal standard for precise quantification of desmosines by LC-MS/MS. In this study, the chemical synthesis of desmosine-CH2 was completed in 22% overall yield in...
Kaberi P Das et al.
Toxicological sciences : an official journal of the Society of Toxicology, 105(1), 173-181 (2008-05-31)
Perfluorobutyrate (PFBA) is a perfluoroalkyl acid (PFAA) found in the environment. Previous studies have indicated developmental toxicity of PFAAs (perfluorooctane sulfonate [PFOS] and perfluorooctanoate [PFOA]); the current study examines that of PFBA. PFBA/NH4(+) was given to timed-pregnant CD-1 mice by...
Merja R Häkkinen et al.
Journal of pharmaceutical and biomedical analysis, 45(4), 625-634 (2007-10-20)
A reversed phase liquid chromatography-electrospray ionization-tandem mass spectrometric method (RP-LC-ESI-MS/MS) was developed to separate and detect polyamines with minimal sample pre-treatment and without any derivatization. Prior to MS/MS analysis, a complete chromatographic separation of polyamines was achieved by a linear...

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