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487090

Sigma-Aldrich

Water-18O

99 atom % 18O

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Synonym(s):
18O Labeled water
Linear Formula:
H218O
CAS Number:
Molecular Weight:
20.02
MDL number:
PubChem Substance ID:

description

Normalized with respect to hydrogen

Quality Level

isotopic purity

99 atom % 18O

bp

100 °C (lit.)

mp

0 °C (lit.)

density

1.11 g/mL at 20 °C (lit.)

mass shift

M+2

SMILES string

[18OH2]

InChI

1S/H2O/h1H2/i1+2

InChI key

XLYOFNOQVPJJNP-NJFSPNSNSA-N

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General description

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.

Application

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.

Storage Class

10 - Combustible liquids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)


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