5-diethoxymethyl-1,3-benzodioxole

Auto flammability

Administrative data

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2019

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2019

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))

Deviations:

yes

Remarks:

See deviation explanation in result section

GLP compliance:

yes (incl. QA statement)

Test material

Test material information

Constituent 1

Reference substance name:

5-diethoxymethyl-1,3-benzodioxole

EC Number:

254-956-0

EC Name:

5-diethoxymethyl-1,3-benzodioxole

Cas Number:

40527-42-2

Molecular formula:

C12H16O4

IUPAC Name:

5-(diethoxymethyl)-2H-1,3-benzodioxole

impurity 1

Reference substance name:

Piperonal

EC Number:

204-409-7

EC Name:

Piperonal

Cas Number:

120-57-0

Molecular formula:

C8H6O3

IUPAC Name:

1,3-benzodioxole-5-carbaldehyde

Specific details on test material used for the study:

Batch no.: 18030042
Appearance: colorless to pale yellow liquid
Purity: 99% (GC)
Homogeneity: homogeneous
Production date: 14. Mar. 2018
Expiry date: 14. Mar. 2019
Storage: Room Temperature (20 ± 5°C) store under inert gas in the dark

Results and discussion

Relative self-ignition temperature (solids)

Key result

Relative self-ignition temperature:

>= 285 °C

Any other information on results incl. tables

* Deviations from the Guideline

The following deviation from the Guideline was ascertained:

The Zündwertprüfer 10-212-000 instrument works with a program according to DIN EN14522.

This is a deviation from theEU-Method A.15 “Auto Ignition Temperature (liquids and gases)” as this norm is not mentioned there. An additional deviation occurs, as the method describes, that after one variation of drops the 2°C test modus will start, even when an ignition has occurred (cf. the orange mark in the schema). In the DIN method 51794 steps of 5°C are proposed in this case. As shown in the schema (see chapter 7) above the endpoint of the different guidelines is the same. It is possible that more ignition trials will be conducted using the EN 14522. Therefore, this can be considered as uncritical.

The study was conducted according to procedure and demands of EU-Method A.15 and DIN 51794. The acceptable range which is demanded in the DIN standard was fulfilled. All measured values show good correlation. No observations were made which might cause doubts concerning the validity of the study outcome.

Applicant's summary and conclusion

Conclusions:

The auto ignition temperature was determined in three independent determinations. A lowest value of the main test of 288 °C was found.
Therefore, the auto-ignition temperature according to EU A.15 (rounded down to a whole multiple of 5 °C) of the test item is stated as 285 °C.