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Reference substances

Reference substances

Currently viewing:
IUPAC name:
Naphthenic acids

Inventory

EC number:
215-662-8
EC name:
Naphthenic acids
CAS number:
1338-24-5
CAS number:
1338-24-5
Synonyms
Names:
Naphthenic acids
Identifier:
other: Molecular formula
C16H30O2 - C21H41O2
Identifier:
other: Molecular formula
For the acidic (naphthenic) fraction: CnH2n+zO2, where n = carbon number and z = homologous group series number: z = 0 when no ring structures are present, z = -2 when 1 ring is present, z = -4 when 2 rings are present etc. For the non-acidic fraction, a molecular formula is not relevant.
Identifier:
other: SMILES notation
Not applicable
Identifier:
other: InChl
Not applicable

Molecular and structural information

Molecular formula:
"CnH2n+zO2, where n = carbon number and z = homologous group series number: z = 0 when no ring structures are present, z = -2 when 1 ring is present, z = -4 when 2 rings are present etc

Result of high resolution mass spectroscopy of 4 naphthenic acids samples from different suppliers/sources:
Ring distribution of aliphatic fraction:
Z = 0 15-30%
Z = -2 35-50%
Z = -4 10-25%
Z = -6 1-7%
Z = -8 0-2%
Z <= -6 1-5% (unsaturated compounds)
Z >= -8 0-2% (unsaturated compounds)
C<= 18 8-15% (N-containing compounds)
C > 18 0-2% (N-containing compounds)
Unknown 0-2%

Distribution of carbon number (n) of 4 naphthenic acids samples from different suppliers/sources (n):C4-C27 (main: C8-C20)
Molecular weight:
> 106 - < 437
SMILES notation:
not applicable
InChl:
not applicable
Structural formula:
Chemical structure

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