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A8396812

Water-<sup>18</sup>O , 10atom%18O , 14314-42-2

Synonym(s):
18O Labeled water;18O Water

CAS NO.:14314-42-2

Empirical Formula: H2O

Molecular Weight: 20.02

MDL number: MFCD00064503

EINECS: 231-791-2

Pack Size Price Stock Quantity
1G RMB186.40 In Stock
5G RMB652.80 In Stock
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Update time: 2022-07-08

PRODUCT Properties

Melting point: 0 °C(lit.)
Boiling point: 100 °C(lit.)
Density  1.11 g/mL at 20 °C(lit.)
storage temp.  Inert atmosphere,Room Temperature
form  Colourless Liquid
color  Colorless to light yellow
Stability: Hygroscopic
InChI InChI=1S/H2O/h1H2/i1+2
InChIKey XLYOFNOQVPJJNP-NJFSPNSNSA-N
SMILES [18OH2]

Description and Uses

Only 0.2% of the oxygen-18O isotope exists in atmospheric oxygen. The Water-18O is manufactured by enriching the oxygen-18O over 98 atom% and is used to produce the [18F]FDG *1 PET diagnostic reagent for cancer. Water enriched in the oxygen-18 isotope (Water-18O) is widely used in medicine, agrochemistry and biochemistry. Oxygen-18 was first enriched to 99.5% in 1943 using thermal diffusion. To date, the use of electrolysis, chemical isotope exchange, gas diffusion, and rectification of oxygen, nitric oxide, and water has been described to enrich water with oxygen-18. Among them, the method of rectification of water, first demonstrated in 1944, is successfully used now in industry.

Water-18O is an isotopically modified water, which is appropriate for PET applications.
It can also be used:

  • In paleoclimatology, hydrology, and plant ecology to determine soil stable oxygen isotope analysis of plant cellulose using δ18O.
  • To determine the diffusion of moisture into crystals using secondary ion mass spectrometry (SIMS).

Safety

Safety Statements  24/25
WGK Germany  3
21
HS Code  28459000

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