Phosphoric acid, disodium salt, heptahydrate

CAS 7782-85-6  ·  H₁₅Na₂O₁₁P  ·  MW 268.07 g/mol

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3D model Phosphoric acid, disodium salt, heptahydrate, CAS 7782-85-6, molecular formula H₁₅Na₂O₁₁P, molar mass 268.07 g/mol
About Phosphoric acid, disodium salt, heptahydrate

Phosphoric acid, disodium salt, heptahydrate is a chemical compound registered under number CAS 7782-85-6, with the molecular formula H₁₅Na₂O₁₁P, and a molar mass of 268.07 g/mol.

The molecule contains 29 atoms connected by 19 chemical bonds. The full systematic IUPAC name of this compound is disodium;hydrogen phosphate;heptahydrate. The interactive 3D model above lets you view the spatial arrangement of the atoms — you can rotate it with the mouse, zoom with the scroll wheel, and switch between skeletal / Ball & Stick / Space Fill visualization modes.

In terms of physicochemical properties, polar surface area PSA = 90.4 Ų, 8 donors and 11 hydrogen bond acceptors. These parameters are key when assessing bioavailability and interaction with biomolecules.

Chemical data for this compound comes from PubChem (NIH NLM NCBI), one of the world's largest chemical databases. All information is updated automatically and enriched with GHS hazard statement translations compliant with the CLP Regulation (EC 1272/2008). The widget above may be used for educational, research and commercial purposes.

Physicochemical properties
Molecular formulaH₁₅Na₂O₁₁P
Molar mass268.07 g/mol
IUPACdisodium;hydrogen phosphate;heptahydrate
SMILESO.O.O.O.O.O.O.OP(=O)([O-])[O-].[Na+].[Na+]
InChIKeyPYLIXCKOHOHGKQ-UHFFFAOYSA-L
logP (XLogP3)—
PSA90.4 Ų
HBD / HBA8 / 11
PubChem CIDCID 6096963 ↗
Scientific literature

Related literature

5 articles · 0 open access · Sources: PubMed, OpenAlex, Semantic Scholar

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📈 Publication timeline (number of articles: 5)

1970: number of articles 119702017: number of articles 42017

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Data from PubMed (NIH NLM), OpenAlex (CC0), Semantic Scholar (AI2). AI Summary generated by Semantic Scholar TLDR. Articles marked with require paid access.

Data sources
Related molecules
📜 License & provenancePREDICTED MODEL · NOT VERIFIEDMolGod_License_1
PREDICTED MODEL — NOT VERIFIED
computed by MolGod Scientific · experimental feature (beta) · may contain errors
ILLUSTRATIVE FRAGMENT ARRANGEMENT — relative positions are not structural data

No source 3-D conformer was available to MolGod for this substance. MolGod Scientific computed this geometry from the structural formula with RDKit 2026.03.6 (ETKDGv3 conformer generation, MMFF94 force-field optimisation; lowest-energy converged conformer of a fixed-seed set). It is not a measured structure, it does not come from PubChem, and it has not been compared with experimental data. It shows one possible conformation.

This substance consists of 10 separate components (for example ions). Each component was computed separately; they are arranged radially around a layout anchor for visualisation only (at least 3.0 Å apart). Their relative positions are not a crystal structure, coordination geometry, ionic contacts or any experimentally determined arrangement.

Methods and references
  1. RDKit: Open-source cheminformatics, version 2026.03.6. Zenodo. doi:10.5281/zenodo.22140358 (all versions: doi:10.5281/zenodo.591637)
  2. Riniker S, Landrum GA. Better Informed Distance Geometry: Using What We Know To Improve Conformation Generation. J. Chem. Inf. Model. 2015, 55, 2562-2574. doi:10.1021/acs.jcim.5b00654
  3. Wang S, Witek J, Landrum GA, Riniker S. Improving Conformer Generation for Small Rings and Macrocycles Based on Distance Geometry and Experimental Torsional-Angle Preferences. J. Chem. Inf. Model. 2020, 60, 2044-2058. doi:10.1021/acs.jcim.0c00025
  4. Halgren TA. Merck molecular force field. I. Basis, form, scope, parameterization, and performance of MMFF94. J. Comput. Chem. 1996, 17, 490-519. doi:10.1002/(SICI)1096-987X(199604)17:5/6<490::AID-JCC1>3.0.CO;2-P
  5. Tosco P, Stiefl N, Landrum G. Bringing the MMFF force field to the RDKit: implementation and validation. J. Cheminform. 2014, 6, 37. doi:10.1186/s13321-014-0037-3
  6. Heller SR, McNaught A, Pletnev I, Stein S, Tchekhovskoi D. InChI, the IUPAC International Chemical Identifier. J. Cheminform. 2015, 7, 23. doi:10.1186/s13321-015-0068-4
  7. Kim S, Chen J, Cheng T, et al. PubChem 2025 update. Nucleic Acids Res. 2025, 53, D1516-D1525. doi:10.1093/nar/gkae1059 Compound record: https://pubchem.ncbi.nlm.nih.gov/compound/6096963
  8. Bolton EE, Kim S, Bryant SH. PubChem3D: Conformer generation. J. Cheminform. 2011, 3, 4. doi:10.1186/1758-2946-3-4 (cited for contrast: no source 3-D conformer was available to MolGod for this record)
Phosphoric acid, disodium salt, heptahydrate (CAS 7782-85-6), H₁₅Na₂O₁₁P - 3D ball-and-stick molecular model, engraved element symbols (H Na O P), MolGod STL previewDownload image

MG-STL-7782-85-6-ENGRAVED · 407,220 △ · 19 MB · SHA-256 5ba50d20e186fab0

Download 3D model · ENGRAVED · H Na O P

Phosphoric acid, disodium salt, heptahydrate (CAS 7782-85-6), H₁₅Na₂O₁₁P - 3D ball-and-stick molecular model, MolGod STL previewDownload image

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Download 3D model

Model
Phosphoric acid, disodium salt, heptahydrate · 7782-85-6
InChIKey
PYLIXCKOHOHGKQ-UHFFFAOYSA-L
License
CC BY-SA 4.0 International (source rights undetermined — not yet granted)
Attribution
MolGod Scientific — Phosphoric acid, disodium salt, heptahydrate (CAS 7782-85-6)
License & provenance record
Phosphoric acid, disodium salt, heptahydrate (CAS 7782-85-6) →
MolGod molecule record
Phosphoric acid, disodium salt, heptahydrate →
Source data
PubChem CID 6096963 ↗
Model information
STL generated by MolGod · MolGod STL Exporter build 48804cd20b0d · generated 2026-10-14
SHA-256 (STL)
52c2878f209fdc2f604bc6a42b3813d9b7b08b3252b6920997386bc3df5998ac
MD5 (STL)
caf209e4b844270a3d810b9b1c0e4b63
Model identifier
MG-STL-7782-85-6
Transformation
MolGod Scientific ball-and-stick mesh
Changes
PREDICTED geometry computed by MolGod Scientific (RDKit), NOT verified; rendered as a triangulated mesh.
Wikimedia Commons
not published yet

This license applies to the MolGod-created STL mesh, not automatically to third-party source material.

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