Sodium selenite pentahydrate - ≥98% , CAS No.26970-82-1

CAS: 26970-82-1 Cat. No.: S337199 Molecular Weight: 263.01 EC Number: 641-389-2 PubChem CID: 134930
AVAILABLE TO ORDER
GRADE & PURITY ≥98%
Synonyms
Selenious acid, disodium salt, pentahydrate | disodium;selenite;pentahydrate | disodium selenite pentahydrate
Storage
Room temperature
Shipped In
FedEx DG Service
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Size
Status
Price
Qty
25g
S337199-25g
≥10
$44.90
100g
S337199-100g
2
$121.90
500g
S337199-500g
1
$461.90
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Why this grade

≥98% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Room temperature Ships FedEx DG Service 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 19 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Sodium selenite pentahydrate is a useful biochemical for proteomics research

Specifications

Synonyms
Selenious acid, disodium salt, pentahydrate | disodium;selenite;pentahydrate | disodium selenite pentahydrate
Specifications & Purity
≥98%
Storage
Room temperature
Shipped In
FedEx DG Service
This product requires cold chain shipping. Ground and other economy services are not available.
Note
Contact with acids liberates toxic gas.
Purity
≥98%
Names and Identifiers
Pubchem Sid504757038
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504757038
Canonical SmilesO.O.O.O.O.[O-][Se](=O)[O-].[Na+].[Na+]
IUPAC Namedisodium;selenite;pentahydrate
InChIKeyTUANAMBRHOLYTH-UHFFFAOYSA-L
INCHI1S/2Na.H2O3Se.5H2O/c;;1-4(2)3;;;;;/h;;(H2,1,2,3);5*1H2/q2*+1;;;;;;/p-2
Isomeric SMILES O.O.O.O.O.[O-][Se](=O)[O-].[Na+].[Na+]
WGK Germany 2
RTECS VS7420000
PubChem CID 134930
UN Number 2630
Packing Group I
Molecular Weight 263.01

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.

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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
ClassAlkali metal oxoanionic compounds
SubclassAlkali metal selenites
Intermediate Tree Nodes Not available
Direct ParentAlkali metal selenites
Alternative Parents Inorganic sodium salts  Inorganic oxides  
Molecular FrameworkNot available
Substituents Alkali metal selenite - Inorganic sodium salt - Inorganic oxide - Inorganic salt
DescriptionThis compound belongs to the class of inorganic compounds known as alkali metal selenites. These are inorganic compounds in which the largest oxoanion is selenite, and in which the heaviest atom not in an oxoanion is an alkali metal.
External Descriptors Not available
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.

32 results found

Lot NumberCertificate TypeDateItem
G2511724Certificate of AnalysisJun 18, 2025 S337199
G2511723Certificate of AnalysisJun 18, 2025 S337199
G2511722Certificate of AnalysisJun 18, 2025 S337199
G2511552Certificate of AnalysisJun 18, 2025 S337199
C2510360Certificate of AnalysisFeb 10, 2025 S337199
C2510364Certificate of AnalysisFeb 10, 2025 S337199
C2510363Certificate of AnalysisFeb 10, 2025 S337199
C2510362Certificate of AnalysisFeb 10, 2025 S337199
C2510361Certificate of AnalysisFeb 10, 2025 S337199
F2427527Certificate of AnalysisJun 07, 2024 S337199
F2427528Certificate of AnalysisJun 07, 2024 S337199
F2427529Certificate of AnalysisJun 07, 2024 S337199
F2427530Certificate of AnalysisJun 07, 2024 S337199
K2310441Certificate of AnalysisOct 27, 2023 S337199
K2310434Certificate of AnalysisOct 27, 2023 S337199
K2310433Certificate of AnalysisOct 27, 2023 S337199
K2310432Certificate of AnalysisOct 27, 2023 S337199
K2310425Certificate of AnalysisOct 27, 2023 S337199
C2425085Certificate of AnalysisOct 27, 2023 S337199
E2430014Certificate of AnalysisOct 27, 2023 S337199
D2423046Certificate of AnalysisOct 27, 2023 S337199
G2325050Certificate of AnalysisOct 24, 2022 S337199
H2329105Certificate of AnalysisOct 24, 2022 S337199
J2312045Certificate of AnalysisOct 24, 2022 S337199
J2312048Certificate of AnalysisOct 24, 2022 S337199
K2209283Certificate of AnalysisOct 24, 2022 S337199
K2209295Certificate of AnalysisOct 24, 2022 S337199
K2209296Certificate of AnalysisOct 24, 2022 S337199
K2209302Certificate of AnalysisOct 24, 2022 S337199
G2314177Certificate of AnalysisOct 24, 2022 S337199
F2330038Certificate of AnalysisOct 24, 2022 S337199
E2323043Certificate of AnalysisOct 24, 2022 S337199

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Chemical and Physical Properties
SensitivityMoisture sensitive
Molecular Weight263.030 g/mol
XLogP3
Hydrogen Bond Donor Count5
Hydrogen Bond Acceptor Count8
Rotatable Bond Count0
Exact Mass263.934 Da
Monoisotopic Mass263.934 Da
Topological Polar Surface Area68.200 Ų
Heavy Atom Count11
Formal Charge0
Complexity18.800
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 Count8
Citations of This Product
References
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2. Rongyao Wang, Jie Cao, Rui Zhang, Zhengguang Sun, Feng Wang, Huimin Wu.  (2022)  Self-assembly of Ni2P/CoSe2 heterostructure as bifunctional electrocatalysts for urea-water electrolysis.  INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,      [PMID:] [10.1016/j.ijhydene.2022.06.276]
3. Yan Zhou, Jingtong Zhang, Hao Ren, Yuan Pan, Youguo Yan, Fengchao Sun, Xueyuan Wang, Shutao Wang, Jun Zhang.  (2019)  Mo doping induced metallic CoSe for enhanced electrocatalytic hydrogen evolution.  APPLIED CATALYSIS B-ENVIRONMENTAL,      [PMID:] [10.1016/j.apcatb.2019.118467]
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5. Long Zuo, Qi Liu, Yi Yu, Yiyao Fan, Lian Zhu, Chengzhi Xu, Benmei Wei, Juntao Zhang, Haibo Wang.  (2024)  Collagen peptide decorated selenium nanoparticles: preparation, characterization, hypolipidemic, and antitumor activities.  PARTICULATE SCIENCE AND TECHNOLOGY,      [PMID:] [10.1080/02726351.2024.2434853]
6. Jingxuan Lu, Juan Li, Shiyan Fu, Huanhuan Tan, Yuhui Hao.  (2024)  Enhanced uranium sequestration through selenite-modified nano-chitosan loaded with melatonin: Facilitating U(IV) conversion.  INTERNATIONAL JOURNAL OF PHARMACEUTICS,      [PMID:39059519] [10.1016/j.ijpharm.2024.124502]
7. Zhisong Mai, Yuying Mai, Xianxian Huang, Shipeng Ning, Hongbing Liao.  (2025)  Evaluation of Anti-Inflammatory and Antibacterial Properties of Photo-Thermal Hydrogel as Dual Functional Platform for Management of Periodontitis.  International Journal of Nanomedicine,      [PMID:40098724] [10.2147/IJN.S508864]
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9. Zhou Heng, Li Ziwei, Jing Shuili, Wang Ben, Ye Zhifei, Xiong Wei, Liu Yonghao, Liu Ye, Xu Chun, Kumeria Tushar, He Yan, Ye Qingsong.  (2024)  Repair spinal cord injury with a versatile anti-oxidant and neural regenerative nanoplatform.  JOURNAL OF NANOBIOTECHNOLOGY,  22  (1): (1-24).  [PMID:38902789] [10.1186/s12951-024-02610-5]
10. Shuya Yuan, Guowei Liu, Qingsheng Zhang, Taifeng Liu, Jianjun Yang, Zhongjie Guan.  (2024)  Synergistic effect of Na doping and CoSe2 cocatalyst for enhanced photocatalytic hydrogen evolution performance of ZnIn2S4.  JOURNAL OF COLLOID AND INTERFACE SCIENCE,      [PMID:39029253] [10.1016/j.jcis.2024.07.129]
11. Chao Wang, Li Zhong, Jixiang Zhang, Minghui Zhan, Kaixiang Ren, Pan Wang, Bianhua Liu, Zhenyang Wang, Jun Zhao.  (2025)  An Eco-Friendly Sb2Se3-Based Superhydrophobic Photothermal Coating for Scalable Anti-icing and De-icing Applications.  ACS Applied Materials & Interfaces,      [PMID:40705939] [10.1021/acsami.5c03999]
12. Yang Liu, Xiaowen Zhang, Fashuai Yang, Cuili Xing, Peng Fan, Yuankui Sun, Xiaohong Guan.  (2025)  Mechanistic insight into the bifurcated pH-dependent decontamination trends in zero-valent aluminum systems.  APPLIED CATALYSIS B-ENVIRONMENTAL,      [PMID:] [10.1016/j.apcatb.2025.125794]
13. Hui-Min Xu, Kai-Hang Yue, Hong-Cheng Zhang, Xiao-Qi Gong, Shao-Lan Zheng, Meng-Han Yin, Guang-Hui Xia, Gao-Ren Li.  (2025)  Paired Fe Single-Atoms Coordinated by N and Se as Oxygen Electrocatalysts for High-Performance Zinc-Air Battery.  Small,      [PMID:40937634] [10.1002/smll.202507379]
14. Yi Wang, Xuemei Liao, Qinglong Guo, Heng Zhang, Lei Ye, Liangchen Yu, Xiaoming Kong, Yicheng Jiang, Peng Zhao, Kaiyong Cai, Hongwei Cheng.  (2025)  Dual-pathway targeted therapy for Parkinson's disease: Biomimetic nanosomes inhibit ferroptosis and pyroptosis through NLRP3 inflammasome regulation.  Bioactive Materials,      [PMID:40678266] [10.1016/j.bioactmat.2025.06.033]
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16. Qing Wang, Jing Sun, Lei Zang, Huaxiong Yao, Lin Wang, Runtao Zhu, Jie Li, Simin Zeng, Hongting Tang, Teng Wang, Ji Liu, Bo Wang, Bo Li, Zhiyuan Liu, Zhuojun Dai.  (2025)  Programmable cell aggregation by a synthetic biosilicification approach.  iScience,      [PMID:40546950] [10.1016/j.isci.2025.112519]
17. Mi Xiao, Zhuoyuan Song, Xiaofan Gao, Songyi Yang, Xinyu Hui, Xinyue Du, Wei Yao, Haotian Duan.  (2025)  Regulation of the surface morphology of CoNiSe2 by magnetron sputtering of Au nanoparticles for the property-promotion of electrode materials for high-performance supercapacitors.  JOURNAL OF ALLOYS AND COMPOUNDS,      [PMID:] [10.1016/j.jallcom.2025.181452]
18. Xinrui Zhang, Yuqi Qiu, Huiyu Xing, Feixiang Yang, Peng Zeng, Hao Fan, Huanwen Chen, Xiaowei Fang.  (2025)  Extractive Electrospray Ionization Mass Spectrometry for Rapid Analysis of Organic and Inorganic Selenium in Honey.  MOLECULES,  30  (21): (4206).  [PMID:41226168] [10.3390/molecules30214206]
19. Siyuan Fan, Xinyue Cai, Weiqi Wang, Meiling Wu, Xiaoyao Huang, Feng Ding, Hao Guo, Geng Dou, Haotian Luo, Shuai Shao, Jing Guo, Zhenlai Zhu, Peisheng Liu, Linfeng Cheng, Siying Liu, Zihan Li, Kun Xuan, Shiyu Liu.  (2026)  Rothia mucilaginosa membrane vesicles stabilize labile iron to alleviate UVB-induced ferroptosis.  Cell Host & Microbe,      [PMID:41500222] [10.1016/j.chom.2025.12.008]
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