推薦產品
蒸汽密度
1.11 (vs air)
同位素純度
99 atom % 18O
化驗
99% (CP)
形狀
gas
技術
PET imaging: suitable
bp
−183 °C (lit.)
mp
−218 °C (lit.)
質量偏移
M+4
SMILES 字串
[18O]=[18O]
InChI
1S/O2/c1-2/i1+2,2+2
InChI 密鑰
MYMOFIZGZYHOMD-XPULMUKRSA-N
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相關類別
一般說明
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。
應用
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。
包裝
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。
推薦產品
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
軟管倒鉤
產品號碼
描述
訂價
訊號詞
Danger
危險聲明
危險分類
Ox. Gas 1 - Press. Gas Compr. Gas
儲存類別代碼
2A - Gases
水污染物質分類（WGK）
WGK 3
閃點（°F）
Not applicable
閃點（°C）
Not applicable
個人防護裝備
Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)
分析證明 (COA)
輸入產品批次/批號來搜索 分析證明 (COA)。在產品’s標籤上找到批次和批號，寫有 ‘Lot’或‘Batch’.。
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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
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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
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