Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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Diss Factsheets

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REACH

2,2-dimethyl-1,3-dioxane-4,6-dione

EC number: 217-992-8 | CAS number: 2033-24-1

Life Cycle description
Uses advised against

Physical & Chemical properties

Endpoint summary

Administrative data

Description of key information

Additional information

Appearance:

The substance is an organic, odourless, beige cristalline solid at 20 ºC and 1013 hPa.

(Source: Internal company data)

Melting point:

The reported melting point was determined to be 92-95°C (decomposition start at 95°C).

(Source: Internal company data)

Boiling point:

The boiling point was reported to be 356.7 ± 35.0°C at 760 Torr.

Relative density:

Relative density was determined to be 1.201 ± 0.06 g/cm3 at 20°C.

Vapor pressure:

Vapor pressure was determined to be 2.86E-5 Torr at 25°C.

Partition coefficient:

The log Pow value was determined to be -1.579 ± 0.456 at 25°C.

Water solubility:

The water solubility was determined to be 25 g/l at 20 °C.

(Source: Internal company data)

Solubility in organic sovents:

The substance is slightly soluble in Ethanol and Chloroform at 20°C.

(Source: Internal company data)

Flash point:

The flash point was calculated to be 195.1 ± 24.4°C.

Auto ignition temperature:

The auto-ignition temperature was determined to be > 365 °C.

(Source: Internal company data)

Explosiveness:

Based on chemical structure and information on handling and use the substance was considered non-explosive.

(Source: Internal expert assessment)

Oxidizing properties:

From the assessment of the chemical structure it was established that the test substance would not have oxidizing properties.

(Source: Internal expert assessment)

pH-Value:

The pH-value of a saturated aqeous solution (conc. 25 g/l) was determined to be 2.3 at 20 °C.

(Source: Internal company data)

Dissociation constant:

The pKa was calculated to be 11.86 ± 0.40 at 25°C.

Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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