Ammonium perfluorononanoate
Names
IUPAC name
Heptadecafluorononanoic acid ammoniate (1:1)
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/C9HF17O2.H3N/c10-2(11,1(27)28)3(12,13)4(14,15)5(16,17)6(18,19)7(20,21)8(22,23)9(24,25)26;/h(H,27,28);1H3
    Key: ORBBVPFDROYXQS-UHFFFAOYSA-N
  • InChI=1/C9HF17O2.H3N/c10-2(11,1(27)28)3(12,13)4(14,15)5(16,17)6(18,19)7(20,21)8(22,23)9(24,25)26;/h(H,27,28);1H3
    Key: ORBBVPFDROYXQS-UHFFFAOYAU
  • FC(F)(C(F)(F)C(=O)O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F.N
Properties
C9H4F17NO2
Molar mass 481.106
Density 1.753 g/mL
Boiling point 196 °C (385 °F; 469 K)
Surface tension:
~8.0 mmol/L[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Ammonium perfluorononanoate (APFN) is an anionic surfactant that in water forms liquid crystalline phases (Lyotropic liquid crystal). It is the ammonium salt of perfluorononanoic acid.

The phase diagram of APFN/H2O system is delineated by the presence of a lamellar phase and a nematic phase with awide isotropic solution. The nematic phase is of the type I, and the aggregates have a positive and diamagnetic anisotropy. In the presence of a magnetic field, the aggregates align parallel to the field direction. The change of phase at the lamellar-nematic temperature has been ascribed to order-disorder transitions.

MLV Formation

It has recently been shown that the lamellar phase of the APFN/2H2O system form multilamellar vesicles under shear rate.[2]

Restrictions

In 2020, a California bill was passed banning APFN as an intentionally added ingredient from cosmetics.[3]

References

  1. Ivanchev, S. S.; Likhomanov, V. S.; Primachenko, O. N.; Khaikin, S. Ya.; Barabanov, V. G.; Kornilov, V. V.; Odinokov, A. S.; Kulvelis, Yu. V.; Lebedev, V. T.; Trunov, V. A. (2012). "Scientific principles of a new process for manufacturing perfluorinated polymer electrolytes for fuel cells". Petroleum Chemistry. 52 (7): 453–461. doi:10.1134/S0965544112070067. ISSN 0965-5441.
  2. Coppola, Luigi; Gentile, Luigi; Nicotera, Isabella; Rossi, Cesare Oliviero; Ranieri, Giuseppe Antonio (2010). "Evidence of Formation of Ammonium Perfluorononanoate/2H2O Multilamellar Vesicles: Morphological Analysis by Rheology and Rheo-2H NMR Experiments". Langmuir. 26 (24): 19060–5. doi:10.1021/la102887e. PMID 21073179.
  3. "Assembly Bill No. 2762". State of California. September 30, 2020. Retrieved 10 October 2020.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.