Water-18O - ≥10 atom% 18O , CAS No.14314-42-2

CAS: 14314-42-2 Cat. No.: W121731 Molecular Weight: 20.02
AVAILABLE TO ORDER
GRADE & PURITY ≥10 atom% 18O
Synonyms
((18)O)water | AKOS015903635 | H218O | UNII-7QV8F8BYNJ | HEAVY WATER (H218O) | 7QV8F8BYNJ | Oxygen-18 | Water-18O, normalized | Water O-18 | Water-18O, 98 atom % 18O | heavy oxygen | Water-18O | HY-108872S | Water (H218O) | Q27115709 | water-(18)O | Oxyge
Storage
Argon charged,Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
200mg
W121731-200mg
4
$17.90
1g
W121731-1g
4
$64.90
5g
W121731-5g
2
$246.90
Enter a quantity for the sizes you want to add.
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Why this grade

≥10 atom% 18O for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Argon charged,Room temperature Ships Normal Check lot-specific COA for exact specifications.

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Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 37 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
((18)O)water | AKOS015903635 | H218O | UNII-7QV8F8BYNJ | HEAVY WATER (H218O) | 7QV8F8BYNJ | Oxygen-18 | Water-18O, normalized | Water O-18 | Water-18O, 98 atom % 18O | heavy oxygen | Water-18O | HY-108872S | Water (H218O) | Q27115709 | water-(18)O | Oxyge
Specifications & Purity
≥10 atom% 18O
Storage
Argon charged, Room temperature
Shipped In
Normal
Purity
≥10 atom% 18O
Names and Identifiers
Pubchem Sid488187382
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488187382
Canonical Smiles[18OH2]
IUPAC Nameoxidane
InChIKeyXLYOFNOQVPJJNP-NJFSPNSNSA-N
INCHI1S/H2O/h1H2/i1+2
Isomeric SMILES [18OH2]
WGK Germany 3
Molecular Weight 20.02
Reaxy-Rn 5915825
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=5915825&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomInorganic compounds
SuperclassHomogeneous non-metal compounds
ClassHomogeneous other non-metal compounds
SubclassNot available
Intermediate Tree Nodes Not available
Direct ParentHomogeneous other non-metal compounds
Alternative Parents Not available
Molecular FrameworkNot available
Substituents Homogeneous other non metal
DescriptionThis compound belongs to the class of inorganic compounds known as homogeneous other non-metal compounds. These are inorganic non-metallic compounds in which the largest atom belongs to the class of 'other non-metals'.
External Descriptors water
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

24 results found

Lot NumberCertificate TypeDateItem
F2604611Certificate of AnalysisMay 27, 2026 W121731
F2604583Certificate of AnalysisMay 27, 2026 W121731
J2523593Certificate of AnalysisSep 30, 2025 W121731
J2523594Certificate of AnalysisSep 30, 2025 W121731
J2523598Certificate of AnalysisSep 30, 2025 W121731
C2512755Certificate of AnalysisMar 03, 2025 W121731
E2512093Certificate of AnalysisMar 03, 2025 W121731
J2425766Certificate of AnalysisOct 14, 2024 W121731
J2425767Certificate of AnalysisOct 14, 2024 W121731
J2425768Certificate of AnalysisOct 14, 2024 W121731
E2416417Certificate of AnalysisMar 15, 2024 W121731
I2306658Certificate of AnalysisAug 14, 2023 W121731
I2306659Certificate of AnalysisAug 14, 2023 W121731
F2316268Certificate of AnalysisJan 14, 2023 W121731
F2316270Certificate of AnalysisJan 14, 2023 W121731
F2316271Certificate of AnalysisJan 14, 2023 W121731
F2316276Certificate of AnalysisJan 14, 2023 W121731
F2428065Certificate of AnalysisJan 14, 2023 W121731
K2228834Certificate of AnalysisAug 27, 2022 W121731
K2228846Certificate of AnalysisAug 27, 2022 W121731
F2220152Certificate of AnalysisJun 04, 2022 W121731
F2220151Certificate of AnalysisJun 04, 2022 W121731
D1824062Certificate of AnalysisFeb 16, 2022 W121731
D1824061Certificate of AnalysisFeb 16, 2022 W121731

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Chemical and Physical Properties
SensitivityHygroscopic
Boil Point(°C)100°C
Melt Point(°C)0 °C (lit.)
Molecular Weight20.015 g/mol
XLogP3-0.500
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count1
Rotatable Bond Count0
Exact Mass20.0148 Da
Monoisotopic Mass20.0148 Da
Topological Polar Surface Area1.000 Ų
Heavy Atom Count1
Formal Charge0
Complexity0.000
Isotope Atom Count1
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Documents & Articles
Citations of This Product
References
1. Ling-Chan Tian, Geqian Fang, Yun Zhou, Wenjun Yu, Lin Li, Jin-Nian Hu, Haiyan Wang, Jin-Xia Liang, Chun Zhu, Xiaodong Wang, Jian Lin.  (2023)  Deciphering structural evolution of adsorbed ˙OH species on Zr-oxo nodes of UiO-66 to modulate methane hydroxylation.  Journal of Materials Chemistry A,  12  (6): (3565-3574).  [PMID:] [10.1039/D3TA05851D]
2. Yanfeng Wang, Peiyun Wei, Zihan Shen, Chao Wang, Jie Ding, Wenkai Zhang, Xin Jin, Chad D. Vecitis, Guandao Gao.  (2023)  O2-Independent H2O2 Production via Water–Polymer Contact Electrification.  ENVIRONMENTAL SCIENCE & TECHNOLOGY,      [PMID:38117535] [10.1021/acs.est.3c07674]
3. Ye Wang, Ming Xu, Xi Wang, Ruixiang Ge, Yu-Quan Zhu, An-Zhen Li, Hua Zhou, Fengen Chen, Lirong Zheng, Haohong Duan.  (2023)  Unraveling the potential-dependent structure evolution in CuO for electrocatalytic biomass valorization.  Science Bulletin,      [PMID:37798176] [10.1016/j.scib.2023.09.033]
4. Hongping He, Xiao Wu, Jianxi Zhu, Mang Lin, Ying Lv, Haiyang Xian, Yiping Yang, Xiaoju Lin, Shan Li, Yiliang Li, H. Henry Teng, Mark H. Thiemens.  (2023)  A mineral-based origin of Earth’s initial hydrogen peroxide and molecular oxygen.  PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,  120  (13): (e2221984120).  [PMID:36940327] [10.1073/pnas.2221984120]
5. Shi Zhaoping, Li Ji, Wang Yibo, Liu Shiwei, Zhu Jianbing, Yang Jiahao, Wang Xian, Ni Jing, Jiang Zheng, Zhang Lijuan, Wang Ying, Liu Changpeng, Xing Wei, Ge Junjie.  (2023)  Customized reaction route for ruthenium oxide towards stabilized water oxidation in high-performance PEM electrolyzers.  Nature Communications,  14  (1): (1-14).  [PMID:36792586] [10.1038/s41467-023-36380-9]
6. Yang Jingyi, Huang Yike, Qi Haifeng, Zeng Chaobin, Jiang Qike, Cui Yitao, Su Yang, Du Xiaorui, Pan Xiaoli, Liu Xiaoyan, Li Weizhen, Qiao Botao, Wang Aiqin, Zhang Tao.  (2022)  Modulating the strong metal-support interaction of single-atom catalysts via vicinal structure decoration.  Nature Communications,  13  (1): (1-9).  [PMID:35869061] [10.1038/s41467-022-31966-1]
7. Ma Yiyuan, An Yurong, Xu Zhuo, Cheng Laifei, Yuan Wenyu.  (2022)  Activating lattice oxygen of two-dimensional MnXn−1O2 MXenes via zero-dimensional graphene quantum dots for water oxidation.  Science China-Materials,  65  (11): (3053-3061).  [PMID:] [10.1007/s40843-022-2091-4]
8. Yan Ding, Kangping Cui, Xueyan Liu, Chen-Xuan Li, Zhi Guo, Minshu Cui, Yihan Chen.  (2022)  Axial g-C3N4 coordinated iron(III) phthalocyanine mediated ultra-efficient peroxymonosulfate activation for high-valent iron species generation.  APPLIED CATALYSIS A-GENERAL,      [PMID:] [10.1016/j.apcata.2022.118679]
9. Min Huang, Shuyi Zhang, Bo Wu, Xing Yu, Yongping Gan, Tiejun Lin, Fei Yu, Yuhan Sun, Liangshu Zhong.  (2022)  Highly Selective Photocatalytic Aerobic Oxidation of Methane to Oxygenates with Water over W-doped TiO2.  ChemSusChem,  15  (14): (e202200548).  [PMID:35502630] [10.1002/cssc.202200548]
10. Qinwei Wei, Songfeng Pei, Guodong Wen, Kun Huang, Zhaohong Wu, Zhibo Liu, Wei Ma, Hui-Ming Cheng, Wencai Ren.  (2019)  High Yield Controlled Synthesis of Nano-Graphene Oxide by Water Electrolytic Oxidation of Glassy Carbon for Metal-Free Catalysis.  ACS Nano,      [PMID:31393701] [10.1021/acsnano.9b04447]
11. Rongshui Wang, Jihong Yi, Jinmeng Shang, Wenjun Yu, Zhifeng Li, Haiyan Huang, Huijun Xie, Shuning Wang.  (2019)  6-Hydroxypseudooxynicotine Dehydrogenase Delivers Electrons to Electron Transfer Flavoprotein during Nicotine Degradation by Agrobacterium tumefaciens S33.  APPLIED AND ENVIRONMENTAL MICROBIOLOGY,      [PMID:30926728] [10.1128/AEM.00454-19]
12. Pei Songfeng, Wei Qinwei, Huang Kun, Cheng Hui-Ming, Ren Wencai.  (2018)  Green synthesis of graphene oxide by seconds timescale water electrolytic oxidation.  Nature Communications,  (1): (1-9).  [PMID:29321501] [10.1038/s41467-017-02479-z]
13. Wenjun Yu, Rongshui Wang, Haiyan Huang, Huijun Xie, Shuning Wang.  (2017)  Periplasmic Nicotine Dehydrogenase NdhAB Utilizes Pseudoazurin as Its Physiological Electron Acceptor in Agrobacterium tumefaciens S33.  APPLIED AND ENVIRONMENTAL MICROBIOLOGY,      [PMID:28625985] [10.1128/AEM.01050-17]
14. Xinrui Zhou, Xian Chen, Yaqin Jin, Istvan E. Markó.  (2012)  Evidence of Two Key Intermediates Contributing to the Selectivity of P450-Biomimetic Oxidation of Sulfides to Sulfoxides and Sulfones.  Chemistry-An Asian Journal,  (10): (2253-2257).  [PMID:22761041] [10.1002/asia.201200422]
15. Wang Jipeng, Li Min, Wang Qitong, Zhang Ziliang, Wang Dungang, Zhang Peipei, Li Na, Zhong Yiqiu, Yin Huajun.  (2024)  Full-factorial resource amendment experiments reveal carbon limitation of rhizosphere microbes in alpine coniferous forests.  BIOLOGY AND FERTILITY OF SOILS,      [PMID:] [10.1007/s00374-024-01860-7]
16. Ji Qianqian, Tang Bing, Zhang Xilin, Wang Chao, Tan Hao, Zhao Jie, Liu Ruiqi, Sun Mei, Liu Hengjie, Jiang Chang, Zeng Jianrong, Cai Xingke, Yan Wensheng.  (2024)  Operando identification of the oxide path mechanism with different dual-active sites for acidic water oxidation.  Nature Communications,  15  (1): (1-12).  [PMID:39284800] [10.1038/s41467-024-52471-7]
17. Jiang Chang, He Hongyuan, Guo Hongquan, Zhang Xiaoxin, Han Qingyang, Weng Yanhong, Fu Xianzhu, Zhu Yinlong, Yan Ning, Tu Xin, Sun Yifei.  (2024)  Transfer learning guided discovery of efficient perovskite oxide for alkaline water oxidation.  Nature Communications,  15  (1): (1-15).  [PMID:39060252] [10.1038/s41467-024-50605-5]
18. Jiahao Yang, Zhaoping Shi, Yibo Wang, Hongxiang Wu, Jing Ni, Pengbo Wang, Meiling Xiao, Changpeng Liu, Wei Xing.  (2025)  Ultrastable Ti@Ir core-shell catalyst with low iridium loading for water electrolysis at industrial-level current density.  CHEMICAL ENGINEERING JOURNAL,      [PMID:] [10.1016/j.cej.2025.160118]
19. Yin Qin, Sihao Deng, Xiao-Ye Zhou, Zilin Yan, Lunhua He, Kaikai Li, Tong-Yi Zhang.  (2025)  Grain Boundary Oxygen Improving the Acidic Oxygen Evolution Reaction of Zn-RuO2@ZnO.  Journal of the American Chemical Society,      [PMID:40817881] [10.1021/jacs.5c08187]
20. Wei Zhuoming, Ding Yunxuan, Shi Weili, Zhang Feiyang, Song Yuxiang, Cui Xin, Guo Yu, Sun Licheng, Jiang Qike, Zhang Biaobiao.  (2025)  Lanthanum-assisted lattice anchoring of iridium in Co3O4 for efficient oxygen evolution reaction in low-iridium water electrolysis.  Nature Communications,  16  (1): (1-14).  [PMID:40885743] [10.1038/s41467-025-63577-x]
21. Zailun Liu, Yunfei Ma, Junqing Li, Ying Tu, Hui Yang, Kelin He, Chao Chen, Yulin Wang, Xiang Lin, Hongli Sun, Chenliang Su, Qitao Zhang.  (2025)  Regulating Exciton Dissociation and Photocatalytic CO2 Reduction Over Single-Atom Cu-In2S3 Nanosheets.  ADVANCED MATERIALS,      [PMID:40995753] [10.1002/adma.202512150]
22. Bin Cao, Yin Qin, Yan Luo, Zhehan Ying, Zilin Yan, Lu-Tao Weng, Kaikai Li, Tong-Yi Zhang.  (2025)  Spatial-adaptive active learning identifies ultra-durable and highly active catalysts for acidic oxygen evolution reaction.  Science Bulletin,      [PMID:41571476] [10.1016/j.scib.2025.12.021]
23. Xilin Bai, Chunxiao Li, Yuheng Luo, Qi’ang Gong, Jinghui Lu, Jiuzhong Yang, Yang Pan, Zhenrong Sun, André K. Eckhardt, Rui Sun, Ralf I. Kaiser, Tao Yang.  (2025)  Formation of hydrogen trioxide (HOOOH) in extraterrestrial ice analogs and its role as an oxidizer in prebiotic chemistry.  Science Advances,  11  (33):   [PMID:40815663] [10.1126/sciadv.adw5720]
24. Zhang Hanyue, Du Yan, Pan Hongbing, Li Min, Hu Shiwen, Tang Yuanyuan, Wang Hanjie, Liu Xin, Hu Bin, Bao Weikai.  (2025)  Deforestation for terraced orchards declined microbial carbon use efficiency in arid valley soils.  Ecological Processes,  14  (1): (1-17).  [PMID:] [10.1186/s13717-025-00647-4]
25. Donghua Su, Xiaolong Zhang, Tianwu An, Xi Wang, Yaqiu Lin, Haibo Wang, Peiqiang Yu, Haitao Shi.  (2025)  Astral-DIA proteomics and 4D label-free N-glycoproteomics of milk fat globule membrane proteins reveal distinct profiles between yak colostrum and mature milk.  Food Chemistry-X,      [PMID:41378274] [10.1016/j.fochx.2025.103302]
26. Jianying Wang, Xu Luo, Tongzhou Li, Jingchen Na, Wanxiu Pang, Hongjie Zhang, Jinkai Hao, Zhigang Shao.  (2025)  Ir single-atom sites stabilized by Ir-O-Ce4-δ coordination for high-efficiency PEMWE.  CHEMICAL ENGINEERING JOURNAL,      [PMID:] [10.1016/j.cej.2025.171275]
27. Siyu Ma, Shufei Wang, Shuguang Wang, Xinze Chen, Hongyuan He, Xiaoxin Zhang, Shuo Zhai, Qingyang Han, Pengfei Zhang, Kai Zhao, Ning Yan, Yue Tie, Ding Ding, Xingyu Chen, Yingru Zhao, Meidan Ye, Abdullah N. Alodhayb, Zhou Chen, Yanping Zheng, Jianhui Li, Yifei Sun.  (2025)  Machine Learning Unveils Ce–O–Co Motifs in Perovskite with Lewis Acidic–Basic Microenvironment for Dual-Site Intramolecular Oxygen Evolution in Saline Water.  ACS Catalysis,      [PMID:] [10.1021/acscatal.5c06762]
28. Zhuojun Wu, Wenwen Gong, Xiao Wang, Yuhan Zhang, Wei Zhou, Shixiong Yi, Hong Yang, Guilong Peng.  (2026)  Unveiling the role of non-metal oxidants in PMSO oxidation: Mechanistic insights across pH regimes.  CHEMICAL ENGINEERING JOURNAL,      [PMID:] [10.1016/j.cej.2026.172578]
29. Shaofu Huang, Man Chen, Youming Diao, Zihan Xie, Hao Lin, Lingyan Huang, Jiahuan Tang, Raymond Jianxiong Zeng, Shungui Zhou.  (2026)  Water Flow-Driven Abiotic Denitrification Associated with Streaming Potential Generation.  ENVIRONMENTAL SCIENCE & TECHNOLOGY,      [PMID:41544178] [10.1021/acs.est.5c15738]
30. Lilai Sun, Yifan Yan, Qinghui Ren, Yanchun Xu, Yu Fu, Zhidong Wang, Zhenhua Li, Mingfei Shao.  (2026)  Hydrogen-Bonding Network Modulation via Polydopamine Enabling Efficient Ethylene Glycol Electrooxidation.  ACS Catalysis,      [PMID:] [10.1021/acscatal.5c08621]
31. Guangyue Liu, Lifang Chen, Zhenyu Liu, Jingchao Chen, Ruimin Ding, Xi Yin.  (2026)  Short-Range-Engineered Nd-Doped IrOx Enables Oxide Path Mechanism for High-Performance PEM Water Electrolysis.  Small,      [PMID:41649100] [10.1002/smll.202511956]
32. Yingxuan Zhao, Chenyang Shen, Qing Liu, Siyuan Zhao, Ruiyao Zhao, Xiangke Guo, Nianhua Xue, Luming Peng, Xuefeng Guo, Yan Zhu, Weiping Ding.  (2026)  Electrocatalytic oxidation or amidation of olefins by asymmetric electrolytes steering carbocation pathways.  GREEN CHEMISTRY,      [PMID:] [10.1039/D5GC07050C]
33. Yue Hou, Pengbo Wang, Jing Ni, Yuqing Cheng, Ming Yang, Xinyi Li, Meiling Xiao, Changpeng Liu, Wei Xing.  (2026)  Oxygen Vacancy-Rich Iridium Oxide with Enhanced Site Accessibility for Efficient Oxygen Evolution.  ELECTROCHIMICA ACTA,      [PMID:] [10.1016/j.electacta.2026.148526]
34. Sun Jiaxun, Zhang Yuanming, Lu Wanheng, Ong Wei Li, Pan Xinglong, Song Wentao, Li Zhonghua, Li Zhaosheng, Ho Ghim Wei.  (2026)  Sustained hydrogen peroxide production via MXene-functionalized supramolecular docking.  Nature Communications,      [PMID:] [10.1038/s41467-026-70693-9]
35. Xiaojie Chen, Wenqi Jia, Xuejie Cao, Guangyu Xu, Ting Jin, Lifang Jiao.  (2026)  Suppressing Dynamic Lattice Oxygen Evolution in RuO2 for Durable Proton Exchange Membrane Water Electrolysis at Industrial Current Densities.  ACS Catalysis,      [PMID:] [10.1021/acscatal.6c00022]
36. Zhongxian Wang, Fulin Yang, Fei Wang, Xin Sun, Kai Li, Ligang Feng, Zhangquan Peng, Junyuan Xu.  (2026)  Stabilizing RuO2 in Acidic Oxygen Evolution via Controlled Lattice Oxygen Hydroxylation.  ACS Catalysis,      [PMID:] [10.1021/acscatal.5c08110]
37. Jipeng Wang, Min Li, Dungang Wang, Huangxin Zhang, Na Li, Huajun Yin.  (2026)  Nitrogen deposition does not exacerbate phosphorus limitation of rhizosphere microbes in subalpine forests.  FUNCTIONAL ECOLOGY,      [PMID:] [10.1111/1365-2435.70297]
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