Tungstic acid - ≥99% , CAS No.7783-03-1

CAS: 7783-03-1 Cat. No.: T104561 Molecular Weight: 249.85 EC Number: 231-975-2 PubChem CID: 1152
AVAILABLE TO ORDER
GRADE & PURITY ≥99%
Synonyms
C20679 | Tungstic acid, >=99.0% (calcined substance, T), powder | Dihydrogen wolframate | Tungstic acid (H2WO4) | Tungstate (WO42-), dihydrogen, (beta-4)- | UNII-J4D6K0RX2G | dihydroxy(dioxo)tungsten | Tungstic acid, 99.999% trace metals basis | CMPGARWFY
Storage
Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
25g
T104561-25g
4
$14.90
100g
T104561-100g
4
$36.90
500g
T104561-500g
3
$169.90
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Why this grade

≥99% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

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.

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Literature proof

Cited in 61 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
C20679 | Tungstic acid, >=99.0% (calcined substance, T), powder | Dihydrogen wolframate | Tungstic acid (H2WO4) | Tungstate (WO42-), dihydrogen, (beta-4)- | UNII-J4D6K0RX2G | dihydroxy(dioxo)tungsten | Tungstic acid, 99.999% trace metals basis | CMPGARWFY
Specifications & Purity
≥99%
Storage
Room temperature
Shipped In
Normal
Purity
≥99%
Names and Identifiers
Pubchem Sid488179603
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488179603
Canonical SmilesO[W](=O)(=O)O
IUPAC Namedihydroxy(dioxo)tungsten
InChIKeyCMPGARWFYBADJI-UHFFFAOYSA-L
INCHI1S/2H2O.2O.W/h2*1H2;;;/q;;;;+2/p-2
Isomeric SMILES O[W](=O)(=O)O
WGK Germany 3
PubChem CID 1152
Molecular Weight 249.85

Documentation

📋 Safety Data Sheet (SDS)

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

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✅ Certificate of Analysis (COA)

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

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📊 Datasheet

Quick-reference summary of product specifications and applications.

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🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

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Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomInorganic compounds
SuperclassMixed metal/non-metal compounds
ClassMiscellaneous mixed metal/non-metals
SubclassMiscellaneous metallic oxoanionic compounds
Intermediate Tree Nodes Not available
Direct ParentMiscellaneous tungstates
Alternative Parents Inorganic salts  Inorganic oxides  
Molecular FrameworkNot available
Substituents Tungstate - Inorganic oxide - Inorganic salt
DescriptionThis compound belongs to the class of inorganic compounds known as miscellaneous tungstates. These are inorganic compounds in which the largest metallic oxoanion is tungstate, to which either no atom or a non metal atom is bonded.
External Descriptors tungsten coordination entity
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.

27 results found

Lot NumberCertificate TypeDateItem
G2220571Certificate of AnalysisMay 09, 2026 T104561
D2601370Certificate of AnalysisApr 08, 2026 T104561
D2601368Certificate of AnalysisApr 08, 2026 T104561
A2620657Certificate of AnalysisJan 31, 2026 T104561
E2629075Certificate of AnalysisJan 31, 2026 T104561
A2620654Certificate of AnalysisJan 31, 2026 T104561
A2620660Certificate of AnalysisJan 31, 2026 T104561
A2620659Certificate of AnalysisJan 31, 2026 T104561
J2515722Certificate of AnalysisOct 17, 2025 T104561
J2515608Certificate of AnalysisOct 17, 2025 T104561
J2515607Certificate of AnalysisOct 17, 2025 T104561
J2515442Certificate of AnalysisOct 17, 2025 T104561
L2107742Certificate of AnalysisSep 09, 2025 T104561
G2525056Certificate of AnalysisAug 06, 2025 T104561
F2510638Certificate of AnalysisJun 23, 2025 T104561
L2402590Certificate of AnalysisDec 05, 2024 T104561
L2402591Certificate of AnalysisDec 05, 2024 T104561
J2323629Certificate of AnalysisNov 01, 2023 T104561
J2323630Certificate of AnalysisNov 01, 2023 T104561
J2323628Certificate of AnalysisNov 01, 2023 T104561
K2419096Certificate of AnalysisNov 01, 2023 T104561
H2312241Certificate of AnalysisAug 18, 2023 T104561
B2306952Certificate of AnalysisFeb 10, 2023 T104561
B2306968Certificate of AnalysisFeb 10, 2023 T104561
G2220578Certificate of AnalysisAug 06, 2022 T104561
G2220572Certificate of AnalysisAug 06, 2022 T104561
G2220570Certificate of AnalysisAug 06, 2022 T104561

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Chemical and Physical Properties
SensitivityMoisture sensitive.
Refractive Index2.24
Boil Point(°C)1473°C
Melt Point(°C)100°Cdec.
Molecular Weight249.850 g/mol
XLogP3
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count4
Rotatable Bond Count0
Exact Mass249.946 Da
Monoisotopic Mass249.946 Da
Topological Polar Surface Area74.600 Ų
Heavy Atom Count5
Formal Charge0
Complexity81.300
Isotope Atom Count0
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
Citations of This Product
References
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5. Penghui Li, Huixiang Wang, Junhua Gao, Liancheng Wang, Jing Shi, Yu Meng, Junfen Li, Baoliang Lv.  (2023)  Revealing the high activity of WO3–SBA-15 with isolated tungsten oxide species in cis-cyclooctene epoxidation.  NEW JOURNAL OF CHEMISTRY,  47  (17): (8391-8398).  [PMID:] [10.1039/D3NJ00587A]
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12. Guang Yang, Daming Hu, Fang Xia, Chuanfan Yang, Yongwei Liu, Xiaoyan He, Yaroslav Shpotyuk, Hongfei Chen, Yanfeng Gao.  (2022)  Doping Sodium Tungsten Bronze-Like (Na5W14O44) Near-Infrared Shielding Functional Units in Bulk Borosilicate Glasses for Energy-Saving Window Applications.  ACS Applied Materials & Interfaces,      [PMID:35786831] [10.1021/acsami.2c03640]
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14. Dong Li, Fachao Wu, Caiyun Gao, Hongfang Shen, Fei Han, Fenglan Han, Zhanlin Chen.  (2022)  Fabrication of an Efficient N, S Co-Doped WO3 Operated in Wide-Range of Visible-Light for Photoelectrochemical Water Oxidation.  Nanomaterials,  12  (12): (2079).  [PMID:35745417] [10.3390/nano12122079]
15. Haosheng Xin, Haiyong Wang, Song Li, Xiaohong Hu, Chenguang Wang, Longlong Ma, Qiying Liu.  (2022)  Efficient production of ethylene glycol from cellulose over Co@C catalysts combined with tungstic acid.  Sustainable Energy & Fuels,  (10): (2602-2612).  [PMID:] [10.1039/D2SE00386D]
16. Guang Yang, Chuanfan Yang, Fang Xia, Daming Hu, Joël Brugger, Barbara E. Etschmann, Jessica Hamilton, Hongfei Chen, Yanfeng Gao.  (2022)  Energy-saving glasses based on sodium tungsten bronze-like (Na5W14O44) functional units: Facile synthesis, NIR-shielding performance, and formation mechanism.  CERAMICS INTERNATIONAL,      [PMID:] [10.1016/j.ceramint.2022.04.005]
17. Zhen Chen, Shipeng Geng, Juan Xiao, Fengyue Zhao, Kun Wang, Yi Wang, Panagiotis Tsiakaras, Shuqin Song.  (2021)  Understanding the selectivity trend of water and sulfate (SO42−) oxidation on metal oxides: On-site synthesis of persulfate, H2O2 for wastewater treatment.  CHEMICAL ENGINEERING JOURNAL,      [PMID:] [10.1016/j.cej.2021.134332]
18. Pengsong Li, Xinxuan Duan, Yun Kuang, Xiaoming Sun.  (2021)  Iridium in Tungsten Trioxide Matrix as an Efficient Bi-Functional Electrocatalyst for Overall Water Splitting in Acidic Media.  Small,  17  (45): (2102078).  [PMID:34612000] [10.1002/smll.202102078]
19. Guang Yang, Yunhang Qi, Daming Hu, Haochen Wang, Hongfei Chen, Liangmiao Zhang, Chuanxiang Cao, Bin Liu, Fang Xia, Yanfeng Gao.  (2021)  Sodium tungsten bronze (NaxWO3)-doped near-infrared-shielding bulk glasses for energy-saving applications.  JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,      [PMID:] [10.1016/j.jmst.2020.12.082]
20. Yan Cheng, Juhui Gong, Bo Cao, Xuan Xu, Peng Jing, Baocang Liu, Rui Gao, Jun Zhang.  (2021)  An Ingenious Strategy to Integrate Multiple Electrocatalytically Active Components within a Well-Aligned Nitrogen-Doped Carbon Nanotube Array Electrode for Electrocatalysis.  ACS Catalysis,      [PMID:] [10.1021/acscatal.0c04975]
21. Zhi Yang, Bowen Luo, Riyang Shu, Zhipeng Tian, Yu Kang, Ying Chen.  (2021)  Efficient hydrodeoxygenation of phenolic compounds and raw lignin-oil under a temperature-controlled phase-transfer catalysis.  FUEL,      [PMID:] [10.1016/j.fuel.2020.120091]
22. Man Qi, Xi Chen, Heng Zhong, Jingwei Wu, Fangming Jin.  (2020)  Base-Free, Vanadium-Catalyzed Conversion of Chitin into Acetic Acid under Low Oxygen Pressure.  ACS Sustainable Chemistry & Engineering,      [PMID:] [10.1021/acssuschemeng.0c07147]
23. Lei Hu, Yue Du, Li Gao, Mengting Di, Ning Zhang, Yu Pan, Xiaoming Yan, Baigang An, Gaohong He.  (2020)  Nanoscale Solid Superacid-Coupled Polybenzimidazole Membrane with High Ion Selectivity for Flow Batteries.  ACS Sustainable Chemistry & Engineering,      [PMID:] [10.1021/acssuschemeng.0c05359]
24. Yihan Liu, Lina Kong, Xin Guo, Jianping Xu, Shaobo Shi, Lan Li.  (2020)  Surface oxygen vacancies on WO3 nanoplate arrays induced by Ar plasma treatment for efficient photoelectrochemical water oxidation.  JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS,      [PMID:] [10.1016/j.jpcs.2020.109823]
25. Yu She, Yufu Zhu, Lei Zhou, Yuanmi Yuan, Jing Hao, Qingsong Jiang.  (2020)  Synthesis of Ag-loaded tungsten oxide microspheres and their improved photocatalytic activity.  Micro & Nano Letters,  15  (1): (58-63).  [PMID:] [10.1049/mnl.2019.0425]
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27. Gasmalla Hind Baballa, Lu Xiaoquan, Shinger Mahgoub Ibrahim, Ni Lubin, Chishti Aadil Nabi, Diao Guowang.  (2019)  Novel magnetically separable of Fe3O4/Ag3PO4@WO3 nanocomposites for enhanced photocatalytic and antibacterial activity against Staphylococcus aureus (S. aureus).  JOURNAL OF NANOBIOTECHNOLOGY,  17  (1): (1-14).  [PMID:31036008] [10.1186/s12951-019-0485-z]
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45. Guang Yang, Hao Liang, Daiqi Zhou, Yinsheng Xu, Viktor Takats, Yaroslav Shpotyuk, Xiaoyan He, Yanfeng Gao.  (2024)  Effect of micro-crystallization on near-infrared shielding performance of Li0.09K0.23WO3 doped glass for energy-saving window.  CERAMICS INTERNATIONAL,      [PMID:] [10.1016/j.ceramint.2024.01.374]
46. Hongyu Lu, Yang Lu, Difan Lin, Jiang Zhu, Yangyang Du, Hua Zou.  (2024)  Giant thermal enhancement of upconversion photoluminescence in Y2W3O12:Nd phosphor under 808 nm excitation.  CERAMICS INTERNATIONAL,      [PMID:] [10.1016/j.ceramint.2024.02.021]
47. Weng Yu-Jing, Ding Zhao-Ying, Li Ying-Chao, Wu Yuan-Feng, Xu Yuan-Yang, Chen Rui, Zhao Xiao-Lei, Wang Hai-Yong, Zhang Da-Lei, Zhang Yu-Long.  (2024)  Oxygen vacancies enriched Ir/WOx catalysts for the directly chem-catalytic conversion of cellulose to ethanol.  Tungsten,      [PMID:] [10.1007/s42864-024-00293-x]
48. Dexi Yu, Yuhong Lin, Wenhui Zhou, Xiaoyi Wang, Zhenzhen Yu, Yidong Hou, Masakazu Anpo, Jimmy C. Yu, Jinshui Zhang, Xinchen Wang.  (2025)  Photocatalytic Oxidation of Benzene to Phenol with O2 over WO3 Treated by Vacuum-Sealed Annealing.  LANGMUIR,      [PMID:39912609] [10.1021/acs.langmuir.4c04998]
49. Liqun Wang, Zihao Zhai, Longnan Li.  (2024)  Rapid Fabrication of Tungsten Oxide-Based Electrochromic Devices through Femtosecond Laser Processing.  Micromachines,  15  (6): (785).  [PMID:38930755] [10.3390/mi15060785]
50. Zhao Yuan, Jiang Kanrui, Wang Wei, Chen Wenjing, Liu Qiutan, Zhi Guowei.  (2024)  Simple Synthesis of Au-WO3 Nanoparticles with Enhanced Photocatalytic Performance.  JOURNAL OF ELECTRONIC MATERIALS,  53  (7): (4250-4260).  [PMID:] [10.1007/s11664-024-11154-1]
51. Qian Qiang, Huamei Yang, Wentao Su, Haiyan He, Shenglong Tian, Changzhi Li, Tao Zhang.  (2024)  Tungsten-based catalysts for lignin conversion: A review.  CATALYSIS TODAY,      [PMID:] [10.1016/j.cattod.2024.114913]
52. Chenru Tian, Ganggang Zhang, Jun Liu, Liqun Zhang.  (2025)  Catalyst-Free and Green Crosslinking of Epoxy-Functionalized EPDM With Dicarboxylic Acids: Insights into Curing Mechanism, Recyclability and Thermal Stability.  MACROMOLECULAR RAPID COMMUNICATIONS,      [PMID:40719220] [10.1002/marc.202500502]
53. Jin You Zheng, Siyuan Liu, Qimeng Sun, Wenshuo Guo, Lingbo Qu, Xiaomei Yu, Songjie Li.  (2025)  Bismuth-Doped Crystalline/Amorphous WO3 Composite Film: Superior Electrochromic Performance and Structure Evolution.  LANGMUIR,      [PMID:40677237] [10.1021/acs.langmuir.5c01695]
54. Zhaozhu Qu, Hongyu Duan, Xiaofei Zhang, Xiaohui Sun, Yuan Chen, Peitao Xu, Xiang Zhang, Bo Wang, Nana Liu, Guohua Wu, Xiangwei Wang, Xuyang Zhang.  (2025)  Crystalline-amorphous WO3 films with slit-shaped mesoporous structure via nanocellulose templating for electrochromic applications.  CERAMICS INTERNATIONAL,      [PMID:] [10.1016/j.ceramint.2025.08.367]
55. Ziyu Jia, Jun Hu, Ping Lu, Yahui Sun, Yunjun Wang.  (2023)  Enhanced lignin-first valorization of biomass for producing monophenols over Ru/C cooperated with H2WO4.  FUEL,      [PMID:] [10.1016/j.fuel.2023.128735]
56. Zhi Yang, Bowen Luo, Riyang Shu, Zhuojie Zhong, Zhipeng Tian, Chao Wang, Ying Chen.  (2022)  Synergistic effect of active metal–acid sites on hydrodeoxygenation of lignin-derived phenolic compounds under mild conditions using Ru/C-HPW catalyst.  FUEL,      [PMID:] [10.1016/j.fuel.2022.123617]
57. Yang He, Qingling Ruan, Han Kang, Ling Ye, Ya-Xiong Wang, Tiefeng Liu, Hairong Cheng, Xingxing Gu.  (2025)  Multi-functional W,N-co-doped nanoporous carbon contributes to high-performance Li-S batteries.  Nano Materials Science,      [PMID:] [10.1016/j.nanoms.2025.06.003]
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