Betaines, coco alkyldimethyl(3-sulfopropyl)

Auto flammability

Administrative data

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2017-12-21 - 2017-12-22 (experimental phase)

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2018

Report date:

2018

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method A.16 (Relative Self-Ignition Temperature for Solids)

Version / remarks:

EU-Method A.16, of 30 May 2008 published on 31 May 2008, “Relative Self-Ignition Temperature for Solids“

Deviations:

yes

Remarks:

but considered uncritical

GLP compliance:

yes (incl. QA statement)

Test material

Test material information

Constituent 1

Reference substance name:

Betaines, coco alkyldimethyl(3-sulfopropyl)

EC Number:

269-225-1

EC Name:

Betaines, coco alkyldimethyl(3-sulfopropyl)

Cas Number:

68201-55-8

Molecular formula:

C7H17NO3S·[CH2]6-16

IUPAC Name:

[3-(dodecyldimethylazaniumyl)propyl]trioxo-λ⁶-sulfanuide

Test material form:

solid: particulate/powder

Remarks:

white

Specific details on test material used for the study:

SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: sponsor

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: The test item was stored in a closed vessel at room temperature (16.0 – 22.5°C).

Results and discussion

Relative self-ignition temperature (solids)

Key result

Remarks on result:

no self-ignition observed up to the melting point

Remarks:

The test item showed no self-ignition up to the melting range of 250 – 256 °C.

Applicant's summary and conclusion

Conclusions:

The auto-ignition temperature was determined in a GLP guideline study according to EU method A.16 without deviations on the registered substance itself. Hence, there is no indication given that the results are not reliable. No increase in the temperature of the sample in comparison to that of the oven could be detected; also no signs of ignition could be observed.
The test item Sulfobetaines, coco alkyldimethyl(3-sulfopropyl) is stated as “showing no self-ignition up to the melting range of 250 – 256 °C” under the test conditions.
No observations were made which might cause doubts concerning the validity of the study outcome.

Executive summary:

The auto-ignition temperature was determined in a GLP guideline study according to EU method A.16. The auto-flammability behaviour was determined by placing the test item into a stainless steel cube and heating from room temperature to an oven temperature of 261.8 °C with the ZPA-3 oven.

No increase in the temperature of the sample in comparison to that of the oven could be detected, also no signs of ignition could be observed.

Therefore, the test item Sulfobetaines, coco alkyldimethyl(3-sulfopropyl) is stated as “showing no self-ignition up to the melting range of 250 – 256 °C” under the test conditions.