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Administrative data

Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
from 13 April 2018 to 09 May 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
The substance can be produced through different process routes, yielding solutions in water or organic solvent (e.g. methanol or ethylene glycol).
It was initially unclear how to register the substance (mono-constituent or multi-constituent substance) and which manufactured substance to test to fulfil the REACH data requirements. After consultation with the ECHA helpdesk, the test program was started with the manufactured substance of the Lead registrant (solvent: methanol) in which the highest amount of solvent could be removed without causing degradation of the substance. This resulted in the selection of a solution of 56-57% BTMAOH in methanol as test substance.
During the course of the test program, and in order to aid meaningful risk assessment, after consultation with ECHA and upon ECHA's recommendation, it was considered to be more appropriate to test the water-based manufactured substance. As a consequence, some testing was performed with a BTMAOH solution in methanol, and some testing was performed with a BTMAOH solution in water.

The current entry reflects a test performed with a methanol-based test solution.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report date:
2018

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Version / remarks:
2016
Deviations:
no
Qualifier:
according to guideline
Guideline:
DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
Version / remarks:
2003
Deviations:
no
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
Benzyltrimethylammonium hydroxide
EC Number:
202-895-5
EC Name:
Benzyltrimethylammonium hydroxide
Cas Number:
100-85-6
Molecular formula:
C10H16N.HO
IUPAC Name:
benzyltrimethylammonium hydroxide
Test material form:
liquid
Details on test material:
Appearance: Clear colourless liquid
Test item storage: At room temperature

Results and discussion

Auto-ignition temperature (liquids / gases)
Key result
Auto-ignition temperature:
320 °C
Atm. press.:
>= 1 013 - <= 1 014 hPa

Any other information on results incl. tables

Table: Results of the auto-ignition temperature measurements

Test

Volume
[μL]

Auto-ignition
temperature
[°C]

Ignition delay

[s]

Colour of the flame

Minimum auto-ignition
temperature
[°C]

1

45

346

3

orange/blue

323

 

50

323

4

orange/blue

 

 

70

326

4

orange/blue

 

2

40

356

2

orange

333

 

60

333

3

orange/blue

 

 

80

334

4

orange

 

3

35

366

3

orange/blue

330

 

55

330

3

orange/blue

 

 

90

346

3

orange/blue

 

Applicant's summary and conclusion

Conclusions:
The auto-ignition temperature of BTMAOH 56-57% in METHANOL was determined to be 320°C (at 1013-1014 hPa).
Executive summary:

The auto-ignition temperature was determined in a GLP study according to EC A.15 and DIN 51794. A solution of 56 -57% Benzyltrimethylammonium hydroxide in methanol was tested. The auto-ignition temperature of BTMAOH 56-57% in METHANOL was determined to be 320°C (at 1013-1014 hPa).