NIST8550
USGS25 (Nitrogen Isotopes in Ammonium Sulfate)
NIST® SRM®
Synonym(s):
Ammonium sulfate, Mascagnite
mp
>280 °C (dec.) (lit.)
density
1.77 g/mL at 25 °C (lit.)
format
neat
SMILES string
N.N.OS(O)(=O)=O
InChI
1S/2H3N.H2O4S/c;;1-5(2,3)4/h2*1H3;(H2,1,2,3,4)
InChI key
BFNBIHQBYMNNAN-UHFFFAOYSA-N
General description
This Reference Material (RM) is a secondary reference material with known nitrogen stable isotope ratios. It is intended to be a validation material for nitrogen stable isotope ratios of working standards that have been calibrated relative to atmospheric nitrogen as δ 15NAIR. The equivalent name used by the International Atomic Energy Agency (IAEA) and the U.S. Geological Survey (USGS) for this RM is USGS25. A unit of RM 8550 consists of one bottle containing 0.8 g of ammonium sulfate salt. SRM 8550_cert SRM 8550_SDS
Legal Information
SRM is a registered trademark of National Institute of Standards and Technology
Regulatory Information
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