IAEA-601 , Benzoic Acid

Materials with known 2H, 13C, 15N and 18O isotopic composition

  • Unit Size: 1.0 g
  • Price per Unit: 130 EUR
  • Date of Release:
  • Producing Laboratory: email

This reference material was prepared by A. Schimmelmann, Indiana University, USA, and W. Brand and R. Werner, Max-Planck-Institute for Biogeochemistry, Jena, Germany, from commercially procured batches of powdered pure benzoic acid. The δ18O values were determined using on-line methods (MPI Jena) and off-line methods (Indiana University). The δ18O values stated are averages determined from both methods. Reports of other laboratories to IAEA on the isotopic values measured are welcome. Its recommended δ13C value was determined in an international calibration [1].

Analyte Value Unit SD R/I/C
δ18O +23.3 VSMOW1 0.3 I

(R/I/C) Classification assigned to the property value for analyte (Recommended/Information/Certified)
[1] VSMOW scale


  1. Coplen, T. B., Brand, W. A., Gehre, M., Gröning M., Meijer, H. A. J., Toman, B., Verkouteren, R. M. (2006): New Guidelines for 13C Measurements. Analytical Chemistry, 78 (7), 2439-2441.



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