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MilliporeSigma

490474

Oxygen-18O2

97 atom % 18O

Synonym(s):

18O Labeled oxygen

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500 ML

$1,020.00

1 L

$1,520.00

$1,020.00

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About This Item

Linear Formula:
18O2
CAS Number:
32767-18-3
Molecular Weight:
36.00
MDL number:
MFCD00084251
UNSPSC Code:
12142200
PubChem Substance ID:
24872565
NACRES:
NA.12

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vapor density

1.11 (vs air)

Quality Level

200

isotopic purity

97 atom % 18O

assay

99% (CP)

form

gas (Compressed)

bp

−183 °C (lit.)

mp

−218 °C (lit.)

mass shift

M+4

storage temp.

room temp

SMILES string

[18O]=[18O]

InChI

1S/O2/c1-2/i1+2,2+2

InChI key

MYMOFIZGZYHOMD-XPULMUKRSA-N

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1 of 4

This Item
602892609889487090
Oxygen-18O2 97 atom % 18O

Sigma-Aldrich

490474

Oxygen-18O2

Oxygen-18O2 99 atom % 18O, 99% (CP)

Sigma-Aldrich

602892

Oxygen-18O2

Methanol-18O 95 atom % 18O

Sigma-Aldrich

609889

Methanol-18O

Water-18O 99 atom % 18O

Sigma-Aldrich

487090

Water-18O

isotopic purity

97 atom % 18O

isotopic purity

99 atom % 18O

isotopic purity

95 atom % 18O

isotopic purity

99 atom % 18O

mass shift

M+4

mass shift

M+4

mass shift

M+2

mass shift

M+2

assay

99% (CP)

assay

99% (CP)

assay

99% (CP)

assay

-

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

form

gas (Compressed)

form

gas

form

-

form

liquid

storage temp.

room temp

storage temp.

-

storage temp.

-

storage temp.

room temp

Packaging

All gas volumes are quoted at Standard Temperature and Pressure (STP) and not at Normal Temperature and Pressure (NTP). One STP Liter is 7.7% more gas than one NTP Liter.
Standard 500 mL quantitiy is packaged in a 25 mL Sure/Pac cylinder with brass 1/4" male NPT valve. Nominal gas pressure at 21ºC is 220 psig for 500 mL.

Standard 1 L quantity is packaged in a 450 mL carbon steel lecture bottle with brass CGA 110/180. Nominal gas pressure at 21ºC is 20 psig for 1 L.

Because of the relatively low cylinder pressures, care must be taken when extracting this product from the cylinder.
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.

Other Notes

Brass hose adapter Z146811 or brass body mini gas regulator Z513539 is recommended for 500 mL Sure/Pac cylinder (U.S only). For 1 L cylinder, either stainless steel control valve Z146951 or Z187224 is recommended.
PTFE sealing washers GCA inlet size 180 Z146994
PTFE sealing washers CGA inlet size 110 Z146986

used together

Product No.
Description
Pricing

pictograms

Flame over circleGas cylinder
GHS03,GHS04

signalword

Danger

hcodes

H270,H280

Hazard Classifications

Ox. Gas 1 - Press. Gas Compr. Gas

Storage Class

2A - Gases

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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Certificates of Analysis (COA)

Lot/Batch Number
MBBF1923
MBBC5696
MBBC5511
MBBC3474
MBBC0260V

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Maxwell A Ware et al.
Plant physiology, 183(4), 1735-1748 (2020-05-28)
The green alga Desmodesmus armatus is an emerging biofuel platform that produces high amounts of lipids and biomass in mass culture. We observed D. armatus in light-limiting, excess-light, and sinusoidal-light environments to investigate its photoacclimation behaviors and the mechanisms by
Sui So et al.
Physical chemistry chemical physics : PCCP, 16(45), 24954-24964 (2014-10-18)
β-Hydroxyperoxyl radicals are formed during atmospheric oxidation of unsaturated volatile organic compounds such as isoprene. They are intermediates in the combustion of alcohols. In these environments the unimolecular isomerization and decomposition of β-hydroxyperoxyl radicals may be of importance, either through

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