Perfluorononanoic acid

Structural formula
General
Surname	Perfluorononanoic acid
other names	Perfluorononane-1-acid n -Heptadecafluorononanoic acid PFNA
Molecular formula	C 9 HF 17 O 2
Brief description	beige solid
External identifiers / databases
CAS number 375-95-1 EC number 206-801-3 ECHA InfoCard 100.006.184 PubChem 67821 ChemSpider 61138 Wikidata Q7168161
properties
Molar mass	464.08 g mol −1
Physical state	firmly
Melting point	59-62 ° C
boiling point	218 ° C (987 hPa)
solubility	practically insoluble in water
safety instructions
GHS hazard labeling from  Regulation (EC) No. 1272/2008 (CLP) , expanded if necessary danger H and P phrases H: 302-332-318-351-360Df-362-372 P: 261-280-302 + 352-305 + 351 + 338
Authorization procedure under REACH	of particular concern : toxic for reproduction ( CMR ), persistent, bioaccumulative and toxic ( PBT )
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Perfluorononanoic acid is a chemical compound from the group of perfluorocarboxylic acids .

Extraction and presentation

Long-chain perfluorocarboxylic acids such as perfluorononanoic acid can be prepared by the electrochemical fluorination of the corresponding acyl halide. They can also be obtained by fluorotelomerization or by hydrolysis of the perfluoroacyl fluoride and subsequent distillation .

properties

Perfluorononanoic acid is a flammable, difficult to ignite, crystalline, beige solid that is practically insoluble in water.

use

Long-chain perfluoroalkanecarboxylic acids (such as perfluorononanoic acid) and their salts are surface-active chemicals ( surfactants ) that greatly reduce the surface tension of water, aqueous solutions and organic liquids even in low concentrations. These acids (C ₆ -C ₁₂ ) and their derivatives are used as wetting, dispersing, emulsifying and foaming agents.

Individual evidence

1. ↑ ^{a b c d e f g} Entry on perfluorononane-1-acid in the GESTIS substance database of the IFA , accessed on July 10, 2019(JavaScript required) .
2. ↑ Entry on perfluorononan-1-oic acid in the Classification and Labeling Inventory of the European Chemicals Agency (ECHA), accessed on July 10, 2019. Manufacturers or distributors can expand the harmonized classification and labeling .
3. ↑ Data sheet Perfluorononanoic acid, 97% from AlfaAesar, accessed on July 10, 2019 ( PDF )(JavaScript required) .
4. ↑ Entry in the SVHC list of the European Chemicals Agency , accessed on July 10, 2019.
5. ↑ ^{a b} Entry on perfluorononanoic acid in the Hazardous Substances Data Bank , accessed on July 10, 2019.