The method to determine isotopic purity is Mass Spectrometry. This product is an M-Clarity level 200 item. The analytical methods are considered proprietary. Please see the link below to a sample Certificate of Analysis that notes they method:
https://www.sigmaaldrich.com/certificates/COFA/48/487090/487090-BULK_______MBBC8728__.pdf
487090
Acqua-18O
99 atom % 18O
Sinonimo/i:
18O Labeled water
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1 G
CHF 2’130.00
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1 G
CHF 2’130.00
About This Item
Formula condensata:
H218O
Numero CAS:
Peso molecolare:
20.02
Numero MDL:
Codice UNSPSC:
12142200
ID PubChem:
NACRES:
NA.12
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Descrizione
Normalized with respect to hydrogen
Purezza isotopica
99 atom % 18O
Stato
liquid
P. ebollizione
100 °C (lit.)
Punto di fusione
0 °C (lit.)
Densità
1.11 g/mL at 20 °C (lit.)
Spostamento di massa
M+2
Temperatura di conservazione
room temp
Stringa SMILE
[18OH2]
InChI
1S/H2O/h1H2/i1+2
XLYOFNOQVPJJNP-NJFSPNSNSA-N
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Categorie correlate
Descrizione generale
H2180 is isotopically modified compound consisting of two hydrogen atoms covalently bonded to oxygen-18. It is most convenient to store, transport and use Oxygen-18 in the form of water enriched with this isotope.
Applicazioni
O-18 enriched water is used in Positron-Emission Tomography (PET), a nuclear imaging technique that is used to observe metabolic processes in the body as an aid to the diagnosis of disease such as tumors, staging of cancer, metastasis, dementia, etc. H2180 is currently the only potential universal bacterial substrate suitable for stable isotope probing (SIP). It has been used in the quantification of population-specific growth dynamics in benthic bacterial communities in response to changing redox conditions.
Codice della classe di stoccaggio
10 - Combustible liquids
Classe di pericolosità dell'acqua (WGK)
WGK 3
Punto d’infiammabilità (°F)
Not applicable
Punto d’infiammabilità (°C)
Not applicable
Dispositivi di protezione individuale
Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)
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I clienti hanno visto anche
H H Coenen et al.
Nuclear medicine and biology, 37(7), 727-740 (2010-09-28)
Positron emission tomography (PET) is a rapidly expanding clinical modality worldwide thanks to the availability of compact medical cyclotrons and automated chemistry for the production of radiopharmaceuticals. There is an armamentarium of fluorine-18 ((18)F) tracers that can be used for
Elizabeth A Rettedal et al.
MicrobiologyOpen, 4(2), 208-219 (2015-02-05)
Current limitations in culture-based methods have lead to a reliance on culture-independent approaches, based principally on the comparative analysis of primary semantides such as ribosomal gene sequences. DNA can be remarkably stable in some environments, so its presence does not
Ömer K Coskun et al.
The ISME journal, 13(6), 1546-1559 (2019-02-21)
The benthos in estuarine environments often experiences periods of regularly occurring hypoxic and anoxic conditions, dramatically impacting biogeochemical cycles. How oxygen depletion affects the growth of specific uncultivated microbial populations within these diverse benthic communities, however, remains poorly understood. Here
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