375-95-1

Usage

Uses

1. Environmental Applications:
Perfluorononanoic Acid is used as a persistent environmental pollutant for its high energy C-F bond, which contributes to its persistence in the environment.
2. Health and Safety Applications:
PFNA is used as a toxicant for its potential to interfere with the immune system, liver, development, and endocrine systems in a toxic fashion.
3. Industrial Applications:
Perfluorononanoic Acid is used in various industrial processes due to its chemical properties, such as its ability to react with bases, oxidizing agents, and reducing agents, making it a versatile compound for different applications.

InChI:InChI=1/C9HF17O2/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)

Upstream product

• 96-49-1 [1,3]-dioxolan-2-one 
• 507-63-1 1-iodoheptadecafluorooctane 
• 124-38-9 carbon dioxide 
• 21652-58-4 1H,1H,2H-perfluorodecene 
• 79754-26-0 perfluorononanoyl peroxide 
• 30377-52-7 perfluorononanoic acid ethyl ester 
• 51300-88-0 (perfluoro n-octyl) magnesiumbromide 

Downstream Products

• 423-56-3 2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,9-heptadecafluorononanol 
• 423-54-1 perfluorooctanoyl ammonia 
• 117293-73-9 2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,9-heptadecafluoro-N-<(4-cyanomethyl)phenyl>nonanamide 
• 82959-19-1 α-heptadeca-fluorooctylacetone 
• 136909-78-9 Acetic acid 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluoro-1-methyl-decyl ester 
• 136909-85-8 (Z)-4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,11-Hexadecafluoro-undec-3-en-2-one 
• 88950-97-4 2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,9-Heptadecafluoro-1-p-tolyl-nonan-1-one 
• 88950-95-2 4-Nonadecafluorononyl-benzoic acid 
• 307-33-5 1-Chloroperfluorooctane 
• 52447-23-1 heptadecafluorononanic acid chloride 
• 355-49-7 perfluorocetane 
• 88950-99-6 1-Methyl-4-nonadecafluorononyl-benzene 
• 122640-80-6 4-Nonadecafluorononyl-benzoyl chloride 
• 88951-04-6 4-Nonadecafluorononyl-benzoic acid methyl ester 

Relevant academic research and scientific papers

Preparation method of fluorine-containing carboxylic acid

The invention discloses a preparation method of fluorine-containing carboxylic acid. The method comprises the following steps: reacting fluorine-containing carboxylate used as a raw material with an acylating chlorination reagent to obtain a corresponding mixture of fluorine-containing acyl chloride and fluorine-containing anhydride, and hydrolyzing and drying the mixture of fluorine-containing acyl chloride and fluorine-containing anhydride to obtain high-purity fluorine-containing carboxylic acid. The method provided by the invention is suitable for post-treatment of fluorine-containing carboxylic acid prepared by a fluorine-containing olefin (monoolefine, diene, cycloolefin and the like) oxidation method, replaces the traditional strong acid acidification and ether continuous extractionprocess, and is simpler, more convenient and more applicable; and the method can also be used for recovering and purifying a fluorine-containing carboxylate emulsifier. The purity of the fluorine-containing carboxylic acid prepared by the method can reach 98% or above.

An improved synthesis of perfluorocarboxylic acids

Perfluoroalkyl iodides C(n)F(2n+1) CF2I (3 2CO2H in 91% yield, by reaction with zinc-copper couple in the presence of solid carbon dioxide in trimethyl phosphate as the solvent.

Small Angle Neutron Scattering on Nematic Lyotropic Liquid Crystals

A solution of 30percent by weight of the tetramethylammonium salt of the perfluorononanoic acid (TMPFN = C8F17COON(CH3)4) in D2O forms a nematic phase in the temperature range between 32 and 37 deg C.The nematic phase was aligned and cooled down to 25 deg C in a magnetic field of 1.63 and 1.26 T.The structure of the aligned sample was studied with small angle neutron scattering (SANS) at different temperatures.In the liquid crystalline phase first and second order Bragg-peaks were observed.This phase consists mainly of liquid crystals build by sheets of disk-like TMPFN micelles alternating with layers of D2O.The lattice parameter is around 75 Angstroem at 25 deg C. An order parameter S near 1 was determined by a thorough analysis of a rocking experiment.Besides the Bragg-peaks further scattering features were observed: A Debye-Scherrer like ring probably related to disclike micelles and a ridge related to a unknown aligned structure.The SANS-pattern was examined in a temperature range between 25 and 45 deg C. - Keywords: Liquid Crystals / Lyotropic Nematic / Micelles / Neutron Scattering / Phase Transitions

REACTIVITE DES PERFLUOROIODOALCANES AVEC LES CARBONATES ET PYROCARBONATES D'ALCOYLES EN PRESENCE DE COUPLE METALLIQUE ZINC-CUIVRE

Perpluoroalkyl iodides RFI, in dissociating solvents, in the presence of zinc-copper couple give perfluoroorganic compounds RFZnI, which reac with alkyl carbonates and pyrocarbonates to give perfluorocarboxylic acids and perfluorocarboxylis esters of industrial interest.

UTRASOUND-PROMOTED DIRECT CARBOXYLATION OF PERFLUOROALKYL IODIDES

Perfluoroalkyl iodides were directly carboxylated with Zn and CO2 under utrasonic irradiation affording the corresponding perfluoroalkanoic acids.

Process for functionalizing perfluorohalogenoalkanes

The present invention relates to the process of preparing perfluoro functional compounds from a perfluorohalogenoalkane having the general formula: wherein RF is a saturated, unsaturated, straight, or branched chain perfluoroalkyl radical containing 2 to 12 carbon atoms, and X is selected from chlorine, bromine, or iodine, comprising reacting said perfluorohalogenoalkane with a functionalizing reagent in the presence of a metallic couple dispersed in a sulfoxide-type solvent, said metallic couple having the general formula: wherein M1 is metal selected from Group IB, IIA, IIB, or IIIA of the Periodic Table and M2 is a metal having an electrochemical potential such that it can be deposited on metal M1.