76-21-1 Usage
Description
9H-HEXADECAFLUORONONANOIC ACID, also known as perfluorinated nonanoic acid, is a synthetic perfluorinated carboxylic acid with the chemical formula C9F19COOH. It is a colorless, odorless liquid that is highly resistant to degradation due to its strong carbon-fluorine bonds. 9H-HEXADECAFLUORONONANOIC ACID has unique properties, such as low surface tension, high chemical stability, and hydrophobicity, which make it useful in various applications.
Uses
Used in Wastewater Treatment:
9H-HEXADECAFLUORONONANOIC ACID is used as an adsorbent for the removal of fluorine-containing compounds from wastewater. The application reason is its strong affinity for fluorine-containing compounds, which allows for efficient removal and reduction of environmental pollution caused by these harmful substances.
Check Digit Verification of cas no
The CAS Registry Mumber 76-21-1 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 7 and 6 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 76-21:
(4*7)+(3*6)+(2*2)+(1*1)=51
51 % 10 = 1
So 76-21-1 is a valid CAS Registry Number.
InChI:InChI=1/C9H2F16O2/c10-1(11)3(12,13)5(16,17)7(20,21)9(24,25)8(22,23)6(18,19)4(14,15)2(26)27/h1H,(H,26,27)
76-21-1Relevant articles and documents
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Scribner,R.M.
, p. 279 - 283 (1964)
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Conformational energies of perfluoroalkanes. 5. Dipole moments of H(CF2)nH and H(CF2)nI
Matsuo, Keizo,Stockmayer, Walter H.
, p. 3307 - 3311 (2007/10/02)
Dielectric and refractive index increments at 25°C are reported for some α,ω-dihydroperfluoroalkanes and α-hydro-ω-iodoperfluoroalkanes in benzene and CCl4. Similar measurements on perfluorocyclohexane and perfluoro-n-hexane are used to deduce effective atomic polarizations for fluorocarbons in solution. The dipole moments obtained lead to a somewhat smaller characteristic ratio for the perfluoroalkane chain than had earlier been estimated by Bates and Stockmayer.
