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Structure & Deep Data of Water (H2O)

Identification of Water Chemical Compound

2D chemical structure image of water
Chemical Formula H2O
Molecular Weight 18.01528 g/mol
IUPAC Name water
SMILES String O
InChI InChI=1S/H2O/h1H2
InChIKey XLYOFNOQVPJJNP-UHFFFAOYSA-N

Chemical Structure Description

A chemical structure of a molecule includes the arrangement of atoms and the chemical bonds that hold the atoms together. The water molecule contains a total of 2 bond(s). There are 1 water molecule(s). Images of the chemical structure of water are given below:

2D chemical structure image of water
2-dimensional (2D) chemical structure image of water
3D chemical structure image of water
3-dimensional (3D) chemical structure image of water

The 2D chemical structure image of water is also called skeletal formula, which is the standard notation for organic molecules. The carbon atoms in the chemical structure of water are implied to be located at the corner(s) and hydrogen atoms attached to carbon atoms are not indicated – each carbon atom is considered to be associated with enough hydrogen atoms to provide the carbon atom with four bonds.

The 3D chemical structure image of water is based on the ball-and-stick model which displays both the three-dimensional position of the atoms and the bonds between them. The radius of the spheres is therefore smaller than the rod lengths in order to provide a clearer view of the atoms and bonds throughout the chemical structure model of water. Download structure data file (SDF/MOL) file of this compound.


chemical table area

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Interactive 3D Visualization

For a better understanding of the chemical structure, an interactive 3D visualization of water is provided here.

The water molecule shown in the visualization screen can be rotated interactively by keep clicking and moving the mouse button. Mouse wheel zoom is available as well – the size of the water molecule can be increased or decreased by scrolling the mouse wheel.

The information of the atoms, bonds, connectivity and coordinates included in the chemical structure of water can easily be identified by this visualization. By right-clicking the visualization screen, various other options are available including the visualization of van der Waals surface and exporting to an image file.


Search Another Chemical Structure

Enter another compound to search for chemical structure:

Input a chemical compound consisting of C, H, N, O, S, F, Cl, Br, I, Si, P, and/or As atom(s)

Input example for Ethanol:

  • Name: ethanol
  • CAS #: 64-17-5
  • Formula: C2H5OH
  • Smiles: CCO
  • InChI: InChI=1S/C2H6O/c1-2-3/h3H,2H2,1H3
  • InChIKey: LFQSCWFLJHTTHZ-UHFFFAOYSA-N

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Additional Information for Identifying Water Molecule

  • SMILES (Simplified Molecular-Input Line-Entry System) string of water

    The SMILES string of water is O, which can be can be imported by most molecule editors for conversion back into two-dimensional drawings or three-dimensional models of the water.

  • Structure Data File (SDF/MOL File) of water

    The structure data file (SDF/MOL File) of water is available for download in the SDF page of water, which provides the information about the atoms, bonds, connectivity and coordinates of water. The water structure data file can be imported to most of the cheminformatics software systems and applications.

  • Chemical formula of water

    The molecular formula of water is available in chemical formula page of water, which identifies each constituent element by its chemical symbol and indicates the proportionate number of atoms of each element.

  • Molecular weight of water

    The molecular weight of water is available in molecular weight page of water, which is calculated as the sum of the atomic weights of each constituent element multiplied by the number of atoms of that element in the molecular formula.

  • Other names (synonyms) or registry numbers of water

    The water compound may be called differently depending on the various different situations of industrial applications. Below are the list of the other names (synonyms) of water including the various registry numbers, if available:

    • AR-1L8208
    • OXO
    • HYD
    • eau
    • DIS
    • 8O
    • 558440-22-5
    • Water, for embryo transfer, sterile-filtered, BioXtra, suitable for mouse embryo
    • Water solution, contains 10.0 % (v/v) methanol, 0.10 % (v/v) trifluoroacetic acid
    • Water solution, contains 0.10 % (v/v) formic acid, 50.0 % (v/v) acetonitrile
    • Water solution, contains 0.1 % (v/v) formic acid, 20 % (v/v) acetonitrile
    • Water solution, contains 0.05 % (w/v) ammonium formate, 0.1 % (v/v) formic acid
    • Sterile Diluent for Merck Sharp & Dohme Corp. Live Attenuated Virus Vaccines
    • Water, for cell biology, free of endotoxins, ultrafiltered and autoclaved
    • Water solution, contains 0.1 % (v/v) trifluoroacetic acid, for HPLC
    • Water solution, HPLC grade, contains 0.035 % (v/v) acetic acid
    • Physicianscare Ophthalmic Solution Eyewash Purified Water, 98.3%
    • Water, sterile-filtered, BioReagent, suitable for cell culture
    • Water, for molecular biology, DEPC-treated and sterile filtered
    • Water solution, for HPLC, contains 0.1 % (v/v) formic acid
    • Water solution, contains 0.06 % (v/v) trifluoroacetic acid
    • Water solution, contains 0.05 % (v/v) trifluoroacetic acid
    • Water solution, contains 10 mM ammonium acetate, for HPLC
    • Water solution, contains 0.1 % (v/v) ammonium hydroxide
    • Density Standard 998 kg/m3, H&D Fitzgerald Ltd. Quality
    • Bacteriostatic Water for Injection USP-pre-filled Syringe
    • Water, for HPCE, for luminescence, for UV-spectroscopy
    • I14-102543
    • Water, deuterium-depleted, <=1 ppm (Deuterium oxide)
    • Water solution, contains 0.10 % (v/v) acetic acid
    • Water solution, contains 0.05 % (v/v) acetic acid
    • Water solution, 0.005N in sulfuric acid, for HPLC
    • Diluting Medium for Insulin Zinc Injectable Suspension
    • First Aid Direct Buffered Eyewash Sterile Isotonic
    • Water, deuterium-depleted, 99.99995 atom %
    • D00001
    • Water, packaged for use in deposition systems
    • Water, deuterium depleted, deuterium 2-3 ppm
    • Diluting Medium for Soluble Insulin Injection
    • Diluting Medium for Isophane Insulin Injection
    • Water, ACS reagent, for ultratrace analysis
    • Sterile purified water in containers (JP17)
    • Fad First Aid Direct Buffered Eye and Skin
    • Emergency Eye Wash, Pw, Sterile Ster-aide
    • Water, ultrapure, Spectrophotometric Grade
    • Water for injection in containers (JP17)
    • Plum Duo Emergency Eyewash Ph Neutralizing
    • A-med Brand First Aid Eye and Skin-rinse
    • Sterilized Water for Injections Ph. Eur.
    • Sterile Isotonic Buffered Genuine Eyewash
    • Physicianscare Ophthalmic Solution Eyewash
    • Airlife Sterile Water for Inhalation USP
    • Xpect Buffered Eyewash Sterile Isotonic
    • Sterile Water for Injection 100% USP
    • 558440-53-2
    • Xpect First Aid Buffered Eye and Skin
    • RTR-011310
    • Bacteriostatic Water for Injection USP
    • Water with 0.1% trifluoroacetic acid
    • Sterile Water for Injection, U.S.P.
    • Sterile Water for Inhalation USP 3ml
    • Plum Emergency Eyewash Ph Neutralizing
    • E-Toxate(TM) Water, endotoxin, free
    • Sterile Water for Inhalation U.S.P.
    • Purified water in containers (JP17)
    • Collyrium for Fresh Eyes - Eye Wash
    • Water, tested according to Ph.Eur.
    • Medi-first Plus First Aid Eye Wash
    • Walgreens Sterile Soothing Eye Wash
    • Water, deionized water, ACS 1L
    • Sperian Eyesaline Emergency Eyewash
    • [OH2]
    • Sterile Water for Injection, USP
    • Salinaax Eye Wash and Skin Flush
    • Xpect First Aid Buffered Eyewash
    • Sterile Water for Irrigation USP
    • Sterile Water for Inhalation USP
    • Water, Molecular Biology Reagent
    • Water for Injection Sterile USP
    • Sterile Water for Injection USP
    • Hydrogen hydroxide (HH or HOH)
    • HMDB02111
    • Green Guard First Aid Eye Wash
    • Aerowash Eyewash and Skin-rinse
    • Water, BioPerformance Certified
    • Medi-first First Aid Eye Wash
    • Bacteriostatic water for injection in plastic container
    • 059QF0KO0R
    • Water, ultrapure, HPLC Grade
    • WATER, For PCR Applications
    • Water, for ion chromatography
    • Water for injection (JP17)
    • Fad First Aid Direct Eyewash
    • C C(KO
    • Water, demineralized, p.A.
    • GLUCOSE 4-O4 GROUP
    • Cederroth Emergency Eye Wash
    • DEUTERIUM OXIDE- D
    • Water, HPLC gradient grade
    • Thesafetydirector Aquapreserv
    • Sterile water for injection in plastic container
    • Dihydrogen monoxide (DHMO)
    • Water, RNase, DNase-free
    • Distilled water, for HPLC
    • Plum Duo Emergency Eyewash
    • Water, for TOC analysis
    • Water (JP17/USP)
    • Sperian Eyesaline Eyewash
    • Purified water (JP17)
    • Eyewash Flushing Solution
    • Water, purified (USP)
    • DISORDERED SOLVENT
    • an unknown oxygen source
    • Water, sterile filtered
    • Water for Injection BP
    • Physicianscare Eye Wash
    • Industrial Neutral-eyes
    • Plum Emergency Eyewash
    • OXO GROUP
    • Water, Endotoxin-free
    • Water, DEPC-Treated
    • BOUND OXYGEN
    • HYDROXY GROUP
    • Family Care Eye Wash
    • Haws Eyewash Additive
    • Water, LC/MS
    • Sterile water (TN)
    • Water, PCR Reagent
    • UNKNOWN
    • Rugby Eye Irrigating
    • Water, HPLC Plus
    • Water, HPLC grade
    • Water, ACS reagent
    • First Aid Eye Wash
    • Eyesaline Concentrate
    • Water, HPLC
    • Bacteriostatic Water
    • Pure Water Density Standard, UKAS ISO/IEC17025 and ISO Guide 34 certified, density: 0.9982 g/mL at 20 C, density: 0.9970 g/mL at 25 C
    • Water for injection, bacteriostatic
    • Scienceware Eyewash
    • Medi-first Eyewash
    • Sterile Water Inj
    • Salinaax Eye Wash
    • Sterile water in plastic container
    • Eys Eye Wash
    • Buffered Eye-lert
    • Boraqua Eye Wash
    • Major Eye Wash
    • Hydrohydroxic acid
    • hydrogen hydroxide
    • Eye Wash
    • DI water
    • Bouton Eye Wash
    • Eye Clean
    • Hydrogen monoxide
    • water-
    • Eye Stream
    • Dorama-neo
    • Water Additive
    • Sterile Diluent
    • Hydric acid
    • Eye Irrigating
    • Aqua Purificata
    • Hydroxic acid
    • Hydroxy radical
    • Water for irrigation, sterile
    • Water for inhalation, sterile
    • Wasser
    • Ocufresh
    • Eyewash
    • Tritiotope
    • Water for injection, sterile
    • dihydridooxygen
    • acqua
    • Sterile water for inhalation
    • Water, sterile purified
    • Water, purified sterile
    • Water for hemodialysis
    • Sterile purified water
    • UNK
    • GTE
    • Pur-wash
    • aqua
    • agua
    • Water, distilled, conductivity or of similar purity
    • HOH
    • DEUTERIUM OXIDE- D
    • MFCD00011332
    • Water, for HPLC
    • Hydrol
    • Ice
    • Bacteriostatic water for injection
    • BOUND WATER
    • H2O
    • Water (distilled)
    • Sterile water for irrigation
    • Sterile water for injection
    • Water for injection
    • Water, distilled
    • Water, sterile
    • oxidane
    • Deionized water
    • DHMO
    • steam
    • Dihydrogen Monoxide
    • Water, mineral
    • Sterile water
    • Water, deionized
    • Water, purified
    • Water vapor
    • 7732-18-5
    • Purified water
    • Distilled water
    • Dihydrogen oxide

Water Identification Summary Frequently Asked Questions (FAQs)

What’s the chemical formula of water?
H2O
How many atoms and what are the elements included the water molecule?
3 atom(s) - 2 Hydrogen atom(s) and 1 Oxygen atom(s)
How many chemical bonds and what kind of bonds are included the water structure?
2 bond(s) - 1 water molecule(s)
What’s the water’s molecular weight?
18.01528 g/mol
What’s the SMILES code of water?
O
What’s the InChI string of water?
InChI=1S/H2O/h1H2
What’s the InChIKey code of water?
XLYOFNOQVPJJNP-UHFFFAOYSA-N

6274 The contents of this page can freely be shared if cited as follows:
Source: Chemical Compounds Deep Data Source (CCDDS; https://www.molinstincts.com) based on 41 patented QSQN and QN technology
commercialized into Mol-Instincts database and ChemRTP, ChemEssen, Inc (2024).

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