Sodium phosphotungstate hydrate - ≥99.9% metals basis , CAS No.312696-30-3

CAS: 312696-30-3 Cat. No.: S407336 Molecular Weight: 2946.00 (anhydrous basis) EC Number: 629-223-7
AVAILABLE TO ORDER
GRADE & PURITY ≥99.9% metals basis
Synonyms
Sodium phosphotungstate tribasic hydrate | Phosphotungstic acid trisodium salt hydrate | Tungstophosphoric acid trisodium salt | Sodium dodecatungstophosphate hydrate | Hydrated sodium phosphorus tungsten oxide | Sodium tungsten hydroxide oxide phosphate
Storage
Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
5g
S407336-5g
5
$19.90
25g
S407336-25g
4
$59.90
100g
S407336-100g
2
$199.90
Enter a quantity for the sizes you want to add.
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Why this grade

≥99.9% metals basis 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.

📚

Literature proof

Cited in 6 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
Sodium phosphotungstate tribasic hydrate | Phosphotungstic acid trisodium salt hydrate | Tungstophosphoric acid trisodium salt | Sodium dodecatungstophosphate hydrate | Hydrated sodium phosphorus tungsten oxide | Sodium tungsten hydroxide oxide phosphate
Specifications & Purity
≥99.9% metals basis
Storage
Room temperature
Shipped In
Normal
Purity
≥99.9% metals basis
Names and Identifiers
WGK Germany 3
Alternate CAS 12026-98-1,51312-42-6
Molecular Weight 2946.00 (anhydrous basis)

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

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.

20 results found

Lot NumberCertificate TypeDateItem
L2518445Certificate of AnalysisDec 02, 2025 S407336
L2518443Certificate of AnalysisDec 02, 2025 S407336
G2324131Certificate of AnalysisMay 13, 2025 S407336
G2324140Certificate of AnalysisMay 13, 2025 S407336
G2324153Certificate of AnalysisMay 13, 2025 S407336
L2502073Certificate of AnalysisNov 25, 2024 S407336
L2413029Certificate of AnalysisNov 25, 2024 S407336
L2403406Certificate of AnalysisNov 25, 2024 S407336
L2403405Certificate of AnalysisNov 25, 2024 S407336
K2514024Certificate of AnalysisNov 25, 2024 S407336
J2414850Certificate of AnalysisOct 08, 2024 S407336
J2414855Certificate of AnalysisOct 08, 2024 S407336
J2414851Certificate of AnalysisOct 08, 2024 S407336
D2417068Certificate of AnalysisJul 06, 2023 S407336
G2324147Certificate of AnalysisJul 06, 2023 S407336
G2324130Certificate of AnalysisJul 06, 2023 S407336
G2324125Certificate of AnalysisJul 06, 2023 S407336
J2214797Certificate of AnalysisSep 30, 2022 S407336
J2214796Certificate of AnalysisSep 30, 2022 S407336
J2214795Certificate of AnalysisSep 30, 2022 S407336

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Chemical and Physical Properties
SensitivitySensitive to humidity
Melt Point(°C)350°C
Citations of This Product
References
1. Kefan Shi, Zemin Sun, Mengwei Yuan, Yuelin Zhao, Genban Sun.  (2023)  “Polyoxometalate electron sponge” induces the accurate regulation of electron states at Ni sites to enhance oxidation of water.  JOURNAL OF COLLOID AND INTERFACE SCIENCE,      [PMID:38029527] [10.1016/j.jcis.2023.11.144]
2. Binghui Xue, Yuyan Lai, Yuan Liu, Mu Li, Xinpei Li, Panchao Yin.  (2023)  The counterion-mediated controllable coacervation of nano-ions with polyelectrolytes.  JOURNAL OF COLLOID AND INTERFACE SCIENCE,      [PMID:36966574] [10.1016/j.jcis.2023.03.105]
3. Yijia Li, Ruizhen Tian, Jiayun Xu, Tingting Wang, Xiaotong Fan, Junqiu Liu.  (2024)  Engineered self-assembled protein nanosheets for in situ biosynthesis of peptide anchored protein-semiconductor hybrids for efficient hydrogen production.  APPLIED CATALYSIS B-ENVIRONMENTAL,      [PMID:] [10.1016/j.apcatb.2024.124764]
4. Shuangyu Wu, Dongdong Li, Mingfeng Wei, Bao Li, Lixin Wu.  (2024)  Polyoxometalate-mediated film bearing near-infrared photothermal self-healing property for seawater desalination.  CHEMICAL ENGINEERING JOURNAL,      [PMID:] [10.1016/j.cej.2024.156030]
5. He Xun, Yao Yongchao, Zhang Min, Zhou Yilei, Zhang Limei, Ren Yuchun, Dong Kai, Tang Hong, Nan Jue, Zhou Xingli, Luo Han, Ying Binwu, Yu Qi, Luo Fengming, Tang Bo, Sun Xuping.  (2025)  Engineered PW12-polyoxometalate docked Fe sites on CoFe hydroxide anode for durable seawater electrolysis.  Nature Communications,  16  (1): (1-11).  [PMID:40593508] [10.1038/s41467-025-60620-9]
6. Jiajia Wan, Menglin Tian, Xiao Wang, Mingwang Pan, Zhicheng Pan.  (2025)  Adaptive microgel films with enhancing cohesion, adhesion, and wettability for robust and reversible bonding in cultural relic restoration.  JOURNAL OF COLLOID AND INTERFACE SCIENCE,      [PMID:40239603] [10.1016/j.jcis.2025.137558]
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