1-Propanaminium, 3-amino-N-(carboxymethyl)-N,N-dimethyl-, N-C8-10 (even numbered) acyl derivs., hydroxides, inner salts

Auto flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

relative self-ignition temperature (solids)

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

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

GLP compliance:

not specified

Key result

Remarks on result:

no self ignition observed under the test conditions

Remarks:

no self-ignition temperature observed up to the decomposition temperature

Conclusions:

The relative self-ignition temperature of C8 -18 AAPB was investigated in a study conducted according to EU Method A.16 (Relative Self-Ignition Temperature for Solids). Up to the decomposition temperature (208°C) no self-ignition temperature was observed.

Executive summary:

The relative self-ignition temperature of C8 -18 AAPB was investigated in a study conducted according to EU Method A.16 (Relative Self-Ignition Temperature for Solids). C8 -18 AAPB is a solid, powdery substance which decomposes above 208°C. Up to the decomposition temperature (208°C) no self-ignition temperature was observed.

Reference 2

Endpoint:

auto-flammability

Type of information:

experimental study

Adequacy of study:

key study

Study period:

5 December - 28 December 2005

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

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

Deviations:

no

GLP compliance:

yes

Auto-ignition temperature:

425 °C

Atm. press.:

1 023.4 hPa

Test	Injected test substance volume [µL]	Auto-ignition temperature [°C]	Time lag [s]
Test 1	50 70 125	469 439 447	12 22 27
Test 2	50 75 200	459 439 447	14 22 25
Test 3	50 90 150	464 429 434	14 23 24

 

Conclusions:

FORMAMIDOPROPYLBETAINE is auto-ignitable with an auto-ignition temperature of 425 °C.

Executive summary:

The determination of the auto-ignition temperature of the test substance was performed in accordance with EEC-Directive 92/69 EEC, A 15 "Auto-Ignition temperature (liquids and gases), 1992", DIN 51794 "Bestimmung der Zündtemperatur" (1978) and IEC standard 79-4: Method of test for ignition temperature (1975).

Three tests were performed. In each test, different volumes of test substance were injected successive times into a test vessel. The temperature in the test vessel was lowered gradually from a sufficienty high temperature until a temperature at which it was obvious that no more ignition occurred. The lowest measured auto-ignition temperature was 429 °C at an injection volume of 90 µL. In accordance with DIN 51794, this temperature was rounded down to the nearest 5 °C giving the auto-ignition temperature for the test substance. In conclusion, FORMAMIDOPROPYLBETAINE is auto-ignitable with an auto-ignition temperature of 425 °C.

Description of key information

no self-ignition up to the decomposition temperature (EU method A.16; RL1; no data on GLP); read-across: C8-18 AAPB

Additional information

No experimental data are available for the substance itself. However, reliable data are available for the closely related source substances C8 -18 AAPB and Formamidopropylbetaine.

 

The relative self-ignition temperature of C8 -18 AAPB was investigated in a study conducted according to EU Method A.16 (Relative Self-Ignition Temperature for Solids). C8 -18 AAPB is a solid, powdery substance which decomposes above 208°C. Up to the decomposition temperature (208°C) no self-ignition temperature was observed.

 

The determination of the auto-ignition temperature of Formamidopropylbetaine was performed in accordance with EEC-Directive 92/69 EEC, A 15 "Auto-Ignition temperature (liquids and gases), 1992", DIN 51794 "Bestimmung der Zündtemperatur" (1978) and IEC standard 79-4: Method of test for ignition temperature (1975).

Three tests were performed. In each test, different volumes of test substance were injected successive times into a test vessel. The temperature in the test vessel was lowered gradually from a sufficiently high temperature until a temperature at which it was obvious that no more ignition occurred. The lowest measured auto-ignition temperature was 429 °C at an injection volume of 90 µL. In accordance with DIN 51794, this temperature was rounded down to the nearest 5 °C giving the auto-ignition temperature for the test substance. In conclusion, Formamidopropylbetaine is auto-ignitable with an auto-ignition temperature of 425 °C.

 

Due to close structural similarities no self-ignition temperature up to the decomposition temperature is expected for the target substance C8-10 Alkylamidopropyl betaine.