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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
from 31 July 2018 to 13 August 2018
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 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:
m,α-dimethylstyrene
EC Number:
214-394-9
EC Name:
m,α-dimethylstyrene
Cas Number:
1124-20-5
Molecular formula:
C10H12
IUPAC Name:
1-isopropenyl-3-methylbenzene
Constituent 2
Chemical structure
Reference substance name:
p,α-dimethylstyrene
EC Number:
214-795-9
EC Name:
p,α-dimethylstyrene
Cas Number:
1195-32-0
Molecular formula:
C10H12
IUPAC Name:
1-isopropenyl-4-methylbenzene
Test material form:
liquid
Details on test material:
Appearance: Clear colourless liquid
Storage conditions: At room temperature

Results and discussion

Auto-ignition temperature (liquids / gases)
Key result
Auto-ignition temperature:
465 °C
Atm. press.:
>= 1 004 - <= 1 021 hPa

Any other information on results incl. tables

Table: auto-ignition temperature measurements

Test

Volume
[μL]

Start

temp. [°C

End

temp. [°C]

Auto-ignition
temperature
[°C]

Ignition

delay

[s]

Colour of

the flame

Minimum auto-ignition
temperature
[°C]

1

50

500

488

490

24

orange

467

 

70

475

465

467

29

 

 

 

120

472

470

472

34

 

 

2

60

496

476

478

26

orange

465

 

90

473

463

465

31

 

 

 

140

488

486

488

26

 

 

3

55

 484

476

478

25

orange

470

 

100

474

468

470

30

 

 

 

150

497

491

493

25

 

 

Applicant's summary and conclusion

Conclusions:
The auto-ignition temperature of the substance was determined to be 465°C (at 1004-1021 hPa).
Executive summary:

The auto-ignition temperature of the substance was determined to be 465°C (at 1004 -1021 hPa) in a GLP study based on EC A.15 and DIN 51794.