Sodium phosphite dibasic pentahydrate - AR, ≥98% , CAS No.13517-23-2

CAS: 13517-23-2 Cat. No.: S104542 Molecular Weight: 216.04 EC Number: 682-208-7 PubChem CID: 22463763
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GRADE & PURITY AR ? Analytical Reagent grade — high-purity chemicals meeting strict assay limits for lab analysis. Use when accuracy matters and trace impurities could skew results. ≥98%
Synonyms
sodium hydrogenphosphite pentahydrate | disodium hydrogenphosphite pentahydrate | Sodium phosphite dibasic pentahydrate, >=98% | Phosphonic acid, disodium salt, pentahydrate | starbld0009655 | J-006660 | AKOS015995308 | Sodium phosphite-5-hydrate | Sodium
Storage
Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
25g
S104542-25g
4
$9.90
100g
S104542-100g
4
$14.90
500g
S104542-500g
1
$35.90
Enter a quantity for the sizes you want to add.
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Why this grade

AR, ≥98% AR 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 1 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
sodium hydrogenphosphite pentahydrate | disodium hydrogenphosphite pentahydrate | Sodium phosphite dibasic pentahydrate, >=98% | Phosphonic acid, disodium salt, pentahydrate | starbld0009655 | J-006660 | AKOS015995308 | Sodium phosphite-5-hydrate | Sodium
Specifications & Purity
AR, ≥98%
Storage
Room temperature
Shipped In
Normal
Grade
AR
Purity
≥98%
Names and Identifiers
Pubchem Sid488200150
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488200150
Canonical SmilesO.O.O.O.O.OP([O-])[O-].[Na+].[Na+]
IUPAC Namedisodium;hydrogen phosphite;pentahydrate
InChIKeyFBKBMXXJECMLCQ-UHFFFAOYSA-N
INCHI1S/2Na.HO3P.5H2O/c;;1-4(2)3;;;;;/h;;1H;5*1H2/q2*+1;-2;;;;;
Isomeric SMILES O.O.O.O.O.OP([O-])[O-].[Na+].[Na+]
WGK Germany 3
PubChem CID 22463763
Molecular Weight 216.04

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
SuperclassMixed metal/non-metal compounds
ClassAlkali metal oxoanionic compounds
SubclassAlkali metal phosphites
Intermediate Tree Nodes Not available
Direct ParentAlkali metal phosphites
Alternative Parents Inorganic sodium salts  Inorganic oxides  
Molecular FrameworkNot available
Substituents Alkali metal phosphite - Inorganic sodium salt - Inorganic oxide - Inorganic salt
DescriptionThis compound belongs to the class of inorganic compounds known as alkali metal phosphites. These are inorganic compounds in which the largest oxoanion is phosphite, 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.

19 results found

Lot NumberCertificate TypeDateItem
G2201539Certificate of AnalysisApr 03, 2026 S104542
C2612621Certificate of AnalysisMar 02, 2026 S104542
C2612622Certificate of AnalysisMar 02, 2026 S104542
C2612623Certificate of AnalysisMar 02, 2026 S104542
C2612624Certificate of AnalysisMar 02, 2026 S104542
L2511068Certificate of AnalysisDec 24, 2025 S104542
J2128322Certificate of AnalysisAug 11, 2025 S104542
L2413752Certificate of AnalysisNov 06, 2024 S104542
L2413728Certificate of AnalysisNov 06, 2024 S104542
L2413712Certificate of AnalysisNov 06, 2024 S104542
L1919049Certificate of AnalysisOct 20, 2023 S104542
B2308114Certificate of AnalysisFeb 13, 2023 S104542
G2201538Certificate of AnalysisJun 12, 2022 S104542
I2311062Certificate of AnalysisJun 12, 2022 S104542
G2201540Certificate of AnalysisJun 12, 2022 S104542
G2201516Certificate of AnalysisJun 12, 2022 S104542
C2422092Certificate of AnalysisJun 12, 2022 S104542
B2308115Certificate of AnalysisJun 12, 2022 S104542
C2422093Certificate of AnalysisNov 01, 2021 S104542

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Chemical and Physical Properties
Molecular Weight216.040 g/mol
XLogP3
Hydrogen Bond Donor Count6
Hydrogen Bond Acceptor Count8
Rotatable Bond Count0
Exact Mass215.999 Da
Monoisotopic Mass215.999 Da
Topological Polar Surface Area71.400 Ų
Heavy Atom Count11
Formal Charge0
Complexity10.800
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
1. Yue Hou, Zhangfu Yuan, Xiangtao Yu, Bowen Ma, Linfei Zhao, Dong Kong.  (2023)  Directly preparing well-dispersed ultra-hydrophilic NiFeP nanoparticle/Mxene complexes from spent electroless Ni plating solution as efficient hydrogen evolution catalysts.  Journal of Environmental Chemical Engineering,      [PMID:] [10.1016/j.jece.2023.109738]
Solution Calculators
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