# Ontology of Chemical Elements (OCE)

> The Ontology of Chemical Elements (OCE) is a community-based ontology in the domain of chemical...

- Page: https://library.schematica.io/model/725bdf1e13d4461a9d049d3a197a56ca
- Model type: Ontology
- License: CC0 1.0
- Access type: Free
- Access method: Download
- Model size: Small
- Formats: OWL
- Domains: Tech / IT
- Audiences: Developer, Researcher
- External link: https://bioportal.bioontology.org/ontologies/OCE
- Contact: Kaiyong Liu (liukaiyong163@163.com)
- Listed in library: 2025-06-12
- Last updated: 2025-09-10

## Description

## Ontology Info

| Field | Value |
|-------|-------|
| Acronyme | OCE |
| Description | The Ontology of Chemical Elements (OCE) is a community-based ontology in the domain of chemical elements. OCE systematically represents and annotates the known 118 chemical elements and their charactistics and relations with other entities. OCE imports the basic chemical element information from ChEBI and adds more classes, annotations, and axioms. OCE specifically focuses on adding all the related information from the Periodic Table of Chemical Elements.  |
| Format | OWL |
| Categories | Physicochemical |
| Groups |  |

## Metrics

| Metric | Value |
|--------|-------|
| Classes | 249 |
| Individuals | 0 |
| Properties | 7 |
| Max Depth | 11 |
| Max Child Count | 29 |
| Average Child Count | 4 |
| Classes With One Child | 26 |
| Classes With More Than 25 Children | 1 |
| Classes With No Definition | 130 |

## Projects using OCE

No projects using OCE

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Source: https://library.schematica.io/model/725bdf1e13d4461a9d049d3a197a56ca