AVAILABLE TO ORDER
GRADE & PURITY ≥97 atom% 18O
Synonyms
((¹⁸)O)water | AKOS015903635 | H2¹⁸O | UNII-7QV8F8BYNJ | HEAVY WATER (H2¹⁸O) | 7QV8F8BYNJ | Water-¹⁸O, normalized | Water O-¹⁸ | Water-¹⁸O, 98 atom % ¹⁸O | heavy oxygen | Water-¹⁸O | HY-108872S | Water (H2¹⁸O) | Q27115709 | water-(¹⁸)O | Oxygen, isotope o
Storage
Room temperature,Argon charged
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
250mg
H102631-250mg
3

$69.90

$124.90
Save $55.00 (44.04%)
1g
H102631-1g
5

$257.90

$342.90
Save $85.00 (24.79%)
5g
H102631-5g
5

$1,031.90

$1,299.90
Save $268.00 (20.62%)
Enter a quantity for the sizes you want to add.

Specifications

Synonyms
((¹⁸)O)water | AKOS015903635 | H2¹⁸O | UNII-7QV8F8BYNJ | HEAVY WATER (H2¹⁸O) | 7QV8F8BYNJ | Water-¹⁸O, normalized | Water O-¹⁸ | Water-¹⁸O, 98 atom % ¹⁸O | heavy oxygen | Water-¹⁸O | HY-108872S | Water (H2¹⁸O) | Q27115709 | water-(¹⁸)O | Oxygen, isotope o
Specifications & Purity
≥97 atom% 18O
Storage
Room temperature, Argon charged
Shipped In
Normal
Purity
≥97 atom% 18O
Names and Identifiers
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.

50 results found

Lot NumberCertificate TypeDateItem
L2515570Certificate of AnalysisDec 03, 2025 H102631
L2515569Certificate of AnalysisDec 03, 2025 H102631
L2515564Certificate of AnalysisDec 03, 2025 H102631
H2504338Certificate of AnalysisJun 19, 2025 H102631
H2504339Certificate of AnalysisJun 19, 2025 H102631
H2504340Certificate of AnalysisJun 19, 2025 H102631
K2517215Certificate of AnalysisJun 19, 2025 H102631
D2507504Certificate of AnalysisMar 12, 2025 H102631
D2507509Certificate of AnalysisMar 12, 2025 H102631
D2507510Certificate of AnalysisMar 12, 2025 H102631
B2512348Certificate of AnalysisDec 04, 2024 H102631
B2512349Certificate of AnalysisDec 04, 2024 H102631
B2512350Certificate of AnalysisDec 04, 2024 H102631
K2414624Certificate of AnalysisOct 29, 2024 H102631
K2414616Certificate of AnalysisOct 29, 2024 H102631
I2426216Certificate of AnalysisSep 14, 2024 H102631
I2426215Certificate of AnalysisSep 14, 2024 H102631
I2426217Certificate of AnalysisSep 14, 2024 H102631
E2420258Certificate of AnalysisMay 11, 2024 H102631
E2420259Certificate of AnalysisMay 11, 2024 H102631
D2417334Certificate of AnalysisMar 11, 2024 H102631
D2417306Certificate of AnalysisMar 11, 2024 H102631
I2306490Certificate of AnalysisAug 04, 2023 H102631
I2306489Certificate of AnalysisAug 04, 2023 H102631
A2305341Certificate of AnalysisDec 09, 2022 H102631
A2305300Certificate of AnalysisDec 09, 2022 H102631
A2305342Certificate of AnalysisDec 09, 2022 H102631
J2210478Certificate of AnalysisAug 29, 2022 H102631
J2210479Certificate of AnalysisAug 29, 2022 H102631
J2210480Certificate of AnalysisAug 29, 2022 H102631
G2214264Certificate of AnalysisJun 14, 2022 H102631
G2214257Certificate of AnalysisJun 14, 2022 H102631
C2202267Certificate of AnalysisJan 24, 2022 H102631
C2202276Certificate of AnalysisJan 24, 2022 H102631
C2202288Certificate of AnalysisJan 24, 2022 H102631
E2330957Certificate of AnalysisMar 01, 2021 H102631
E2330941Certificate of AnalysisMar 01, 2021 H102631
I2511359Certificate of AnalysisMar 01, 2021 H102631
L2314336Certificate of AnalysisMar 01, 2021 H102631
L2314334Certificate of AnalysisMar 01, 2021 H102631
D2609213Certificate of AnalysisMar 01, 2021 H102631
K2408104Certificate of AnalysisMar 01, 2021 H102631
G2504363Certificate of AnalysisMar 01, 2021 H102631
F2424189Certificate of AnalysisMar 01, 2021 H102631
F2527144Certificate of AnalysisMar 01, 2021 H102631
G2501115Certificate of AnalysisMar 01, 2021 H102631
G2501317Certificate of AnalysisMar 01, 2021 H102631
G2531246Certificate of AnalysisMar 01, 2021 H102631
G2523626Certificate of AnalysisMar 01, 2021 H102631
G2509383Certificate of AnalysisMar 01, 2021 H102631

Show more ⌵

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
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. 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]
20. 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]
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]
Solution Calculators
Reviews

Customer Reviews

Shall we send you a message when we have discounts available?

Remind me later

Thank you! Please check your email inbox to confirm.

Oops! Notifications are disabled.