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608572

Sigma-Aldrich

Deuterium oxide-18O

99 atom % D, 95 atom % 18O

Synonym(s):

Doubly Labeled Water, Heavy water-d2,18O, Unnormalized water-18O

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About This Item

Linear Formula:
D218O
CAS Number:
Molecular Weight:
22.03
MDL number:
UNSPSC Code:
12352303
PubChem Substance ID:
NACRES:
NA.12

isotopic purity

95 atom % 18O
99 atom % D

bp

101.4 °C (lit.)

mp

3.8 °C (lit.)

density

1.216 g/mL at 25 °C

mass shift

M+4

SMILES string

[2H][18O][2H]

InChI

1S/H2O/h1H2/i1+2/hD2

InChI key

XLYOFNOQVPJJNP-LAPWFLRPSA-N

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Packaging

This product may be available from bulk stock and can be packaged on demand. For information on pricing, availability and packaging, please contact Stable Isotopes Customer Service.

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

608572-VAR:
608572-BULK:
608572-1G:


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Articles

By first labeling molecular oxygen and then body water with 18O in a rat, Lifson measured the 18O abundance in expired CO2 and found the oxygens in CO2 exchanged with the oxygen in water. Indeed, these two oxygen containing species were in rapid isotopic equilibrium due to the actions of what we now know is carbonic anhydrase (Lifson, 1966)

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