Water-¹⁶O - ≥99.94 atom% 16O , CAS No.7732-18-5

CAS: 7732-18-5 Cat. No.: W433879 Formula: H2O Molecular Weight: 18.02 EC Number: 231-791-2
AVAILABLE TO ORDER
GRADE & PURITY ≥99.94 atom% 16O
Synonyms
ECOLAB Eye Wash | SalinaaxEye Wash | Water, distilled | Deionized water | Ocufresh | Water, sterile purified | AeroWash Eyewash | agua | eau | NSC 147337 | Water,distilled | Water; Dihydrogen oxide | 1,3-epoxy- | CHEBI:15377 | Dorama-neo | Pur-wash | Wate
Storage
Room temperature
★
Size
Germany (EU)
USA*
Price
Qty
250mg
W433879-250mg
Made to order · 8–12 wks
€51.98
1g
W433879-1g
Made to order · 8–12 wks
€121.40
Enter a quantity for the sizes you want to add.
🧪
Why this grade

≥99.94 atom% 16O for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature Ships Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 601 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
ECOLAB Eye Wash | SalinaaxEye Wash | Water, distilled | Deionized water | Ocufresh | Water, sterile purified | AeroWash Eyewash | agua | eau | NSC 147337 | Water,distilled | Water; Dihydrogen oxide | 1,3-epoxy- | CHEBI:15377 | Dorama-neo | Pur-wash | Wate
Specifications & Purity
≥99.94 atom% 16O
Storage
Room temperature
Purity
≥99.94 atom% 16O
Names and Identifiers
Canonical Smiles
[16OH2]
IUPAC Name
oxidane
InChIKey
XLYOFNOQVPJJNP-UHFFFAOYSA-N
INCHI
1S/H2O/h1H2
Isomeric SMILES
O
Molecular Weight
18.02

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
SuperclassHomogeneous non-metal compounds
ClassHomogeneous other non-metal compounds
SubclassNot available
Intermediate Tree Nodes Not available
Direct ParentHomogeneous other non-metal compounds
Alternative Parents Not available
Molecular FrameworkNot available
Substituents Homogeneous other non metal
DescriptionThis compound belongs to the class of inorganic compounds known as homogeneous other non-metal compounds. These are inorganic non-metallic compounds in which the largest atom belongs to the class of 'other non-metals'.
External Descriptors a small molecule
3D Structure
Interactive Chemical Structure Model





Mechanisms of Action
Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:
Chemical and Physical Properties
Refractive Index1.34
Boil Point(°C)100 °C
Melt Point(°C)0 °C (lit.)
Molecular Weight18.015 g/mol
XLogP3-0.500
Hydrogen Bond Donor Count1
Hydrogen Bond Acceptor Count1
Rotatable Bond Count0
Exact Mass18.0106 Da
Monoisotopic Mass18.0106 Da
Topological Polar Surface Area1.000 Ų
Heavy Atom Count1
Formal Charge0
Complexity0.000
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 Count1
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Citations of This Product
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Reviews

Customer Reviews

Frequently Asked Questions

What is the isotopic enrichment of this product?
This product is isotopically enriched to ≥99.94 atom% the labelled isotope. Isotopic enrichment is a separate specification from chemical purity — a labelled compound has both. Lot-specific values are stated on the Certificate of Analysis.
How should this product be stored?
Store at room temperature.
What are the CAS number, molecular formula and molecular weight?
The CAS Number is 7732-18-5, the molecular formula is H2O, and the molecular weight is 18.02 g/mol. InChIKey XLYOFNOQVPJJNP-UHFFFAOYSA-N.
What documentation is provided?
Available product documentation, including Certificates of Analysis (COA), Safety Data Sheets (SDS), and specification sheets, is shown in the product document area. Document availability and access follow the current site policy.

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