> For the complete documentation index, see [llms.txt](https://manual.stoffenmanager.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://manual.stoffenmanager.app/manual/en/inventory/components.md).

# Components

**Open:** Inventory → Components

**Overview:** The component overview lists all components in the company space. Use filters, the search box and select columns (all top-right) to find components quickly. You must archive a component before deletion. The side panel shows creation/modified dates.

**Create new component:** Click **Create component** (top-right) → pop-up opens with 3 main tabs:

**Tab 1 — Properties**

* Name of the component
* Stoffenmanager® (SCI-number): An automated number pulled from the Stoffenmanager®  component database to link component records between the databases.
* CAS number
* EC number
* REACH number
* Physical state (solid/liquid/gas)
  * Although it is possible to choose between three physical state types, only the states ‘solid’ and ‘liquid’ can be used in a risk assessment due to the applicability domain of the model.
* Physical state (solid/liquid/gas)
  * Although it is possible to choose between three physical state types, only the states ‘solid’ and ‘liquid’ can be used in a risk assessment due to the applicability domain of the model.
* Molecular weight
  * The molecular weight of the component can be used to recalculate values from parts per million (ppm) to milligrams per cubic meter (mg/m³).
* Boiling point
  * The boiling point of a component is used to recalculate the vapour pressure when a component is used in an elevated process temperature.

**Tab 2 — Vapour pressures**

* Add one or multiple vapour pressure entries at different temperatures to support different process temperatures if multiple vapour pressures are available.
  * Vapour pressure in Pascal (Pa)
  * Temperature in degrees Celsius (˚C)

**Tab 3 — Limit values** 

Limit values are used to determine whether or not exposure is controlled after performing your risk assessment. For liquids, you can enter a limit value for inhalation. For solids, you can enter two types of limit values: the inhalable fraction and the respirable fraction.

Add inhalable and respirable occupational limit values for the component.

* Country
* Source
* Type
* Limit value in milligrams per cubic meter (mg/m³)

**After Save:**

* Component appears in overview.
* Selecting a component opens a detailpanel where you can edit data and add comments (there is a free-text tab 4 for comments).
* Top-right of side panel: close, remove, or open fullscreen controls.
* Bottom of side panel: creation and last modified dates.

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