蒸汽密度
1.11 (vs air)
质量水平
同位素纯度
99 atom % 18O
检测方案
99% (CP)
形式
gas
技术
PET imaging: suitable
bp
−183 °C (lit.)
mp
−218 °C (lit.)
质量偏移
M+4
SMILES字符串
[18O]=[18O]
InChI
1S/O2/c1-2/i1+2,2+2
InChI key
MYMOFIZGZYHOMD-XPULMUKRSA-N
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相关类别
一般描述
氧气-18O2是稳定的天然氧同位素。18O2的天然丰度至少可达99 atom % O-18。
应用
18O2同位素标记可与飞行时间二次离子质谱法共同用于分析并阐明氧分子诱导的降解机制。18O2标记作为不可循环使用的标记用于研究胶原降解可避免其他循环使用的标记会带来的较大误差。
氧-18O2 可用于研究光合作用研究中的动力学和功能分析。它用于估计氧在维生素 K 依赖性羧化反应中的作用。还可测量用 SF6等离子体蚀刻石英管产生的氧气量。
包装
1 L数量包装在配有黄铜CGA 110/180阀门的450 mL碳钢气阀瓶中。 在21℃条件下，1 L标称气压分别为20 psig。这些气压略高于大气压。 务必小心从气瓶中取出本品。
所有气体体积均为标准温度和压力 (STP) ，不是正常温度和压力 (NTP) 。一STP升比一NTP升多7.7%气体。
推荐产品
铜质软管接头Z146811 或铜体微型气流阀 Z513539 推荐用于 500 mL Sure/Pac 钢瓶（仅在美国有售）。 对于1 L钢瓶，建议使用不锈钢控制阀Z146951或Z187224。
PTFE密封圈GCA入口规格180 Z146994
PTFE密封圈CGA入口规格110 Z146986
PTFE密封圈GCA入口规格180 Z146994
PTFE密封圈CGA入口规格110 Z146986
软管倒钩
产品编号
说明
价格
警示用语：
Danger
危险声明
危险分类
Ox. Gas 1 - Press. Gas Compr. Gas
WGK
WGK 3
闪点(°F)
Not applicable
闪点(°C)
Not applicable
个人防护装备
Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)
法规信息
监管及禁止进口产品
Dmitriy Shevela et al.
Frontiers in plant science, 4, 473-473 (2013-12-11)
Monitoring isotopic compositions of gaseous products (e.g., H2, O2, and CO2) by time-resolved isotope-ratio membrane-inlet mass spectrometry (TR-IR-MIMS) is widely used for kinetic and functional analyses in photosynthesis research. In particular, in combination with isotopic labeling, TR-MIMS became an essential
J A Molnar et al.
The Biochemical journal, 250(1), 71-76 (1988-02-15)
To explore the effects of growth retardation, caused by restricted protein intake, on collagen turnover in the whole skin, Sprague-Dawley rats (n = 20) were labelled with 18O2 and fed on either an adequate (18%) or a low (3%) lactalbumin
Catherine Fenselau et al.
Journal of proteome research, 8(5), 2140-2143 (2009-04-03)
Enzyme-catalyzed 18O2-labeling offers a universal strategy for uniform labeling of all peptides from any kind of proteins, including post-translationally modified proteins. It is applicable to clinical samples with unrivaled sensitivity. This review discusses strengths and limitations, and advocates the separation
Rachelle A S Lemke et al.
The Journal of biological chemistry, 295(29), 9786-9801 (2020-05-22)
Fatty acids play many important roles in cells and also in industrial processes. Furan fatty acids (FuFAs) are present in the lipids of some plant, fish, and microbial species and appear to function as second messengers in pathways that protect
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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