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Physical & Chemical properties

Auto flammability

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Endpoint:
auto-flammability
Type of information:
read-across based on grouping of substances (category approach)
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Secondary literature, peer reviewed handbook data
Justification for type of information:
Read across from the n-Butyl methacrylate category member donor substance.
REPORTING FORMAT FOR THE CATEGORY APPROACH
see attached category document
PM_Lower Alkyl (C1-C8) Methacrylates

The esters of the Lower Alkyl (C1-C8) Methacrylate category are a group of substances that show structurally related trends in physical chemical, toxicological and ecotoxicological properties. All members share a common chemical reactivity and biological properties that enable interpolation and read across between category members for many endpoints.
Qualifier:
according to guideline
Guideline:
other: not known
Principles of method if other than guideline:
other
GLP compliance:
not specified
Auto-ignition temperature:
294 °C
Atm. press.:
1 013 hPa
Remarks on result:
other: pressure: no data, atmospheric press. assumed

The pressure at which this auto flammability measure was obtained is not specified in the report.

Conclusions:
A reliable handbook value for auto-ignition temperature of 294 °C is reported.
Executive summary:

A reliable handbook value for auto-ignition temperature of 294 °C is reported.

Endpoint:
auto-flammability
Type of information:
read-across based on grouping of substances (category approach)
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Handbook data. Basic information given.
Justification for type of information:
Read across from the n-Butyl methacrylate category member donor substance.
REPORTING FORMAT FOR THE CATEGORY APPROACH
see attached category document
PM_Lower Alkyl (C1-C8) Methacrylates

The esters of the Lower Alkyl (C1-C8) Methacrylate category are a group of substances that show structurally related trends in physical chemical, toxicological and ecotoxicological properties. All members share a common chemical reactivity and biological properties that enable interpolation and read across between category members for many endpoints.
Qualifier:
according to guideline
Guideline:
other: not known
Principles of method if other than guideline:
The editors of the handbook stated that the values given were measured at ambient atmospheric pressure (1013 hPa). Therefor we assume that the value of auto flammability is a measured value.
GLP compliance:
not specified
Auto-ignition temperature:
290 °C
Atm. press.:
1 013 hPa
Remarks on result:
other: atmospheric pressure 1013 hPa
Conclusions:
A reliable handbook value for auto-flammability is 290 °C at 1013 hPa.
Executive summary:

A reliable handbook value for auto-flammability is 290 °C at 1013 hPa.

Endpoint:
auto-flammability
Type of information:
read-across based on grouping of substances (category approach)
Adequacy of study:
weight of evidence
Reliability:
1 (reliable without restriction)
Justification for type of information:
Read across from the 2 Ethylhexyl methacrylate category member donor substance.
REPORTING FORMAT FOR THE CATEGORY APPROACH
see attached category document
PM_Lower Alkyl (C1-C8) Methacrylates

The esters of the Lower Alkyl (C1-C8) Methacrylate category are a group of substances that show structurally related trends in physical chemical, toxicological and ecotoxicological properties. All members share a common chemical reactivity and biological properties that enable interpolation and read across between category members for many endpoints.




Qualifier:
according to guideline
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
GLP compliance:
yes (incl. QA statement)
Auto-ignition temperature:
250 °C
Atm. press.:
>= 1 010 - <= 1 013 hPa
Remarks on result:
other:

Preliminary test: The lowest self-ignition temperature was determined to be 258 oC.

Main test: The following table shows the results of the three principal tests. Temperatures, where self-ignition (+) was detected and where not (-). The amount of test item tested at each measurement is indicated as numbers of drops.

1. Principal test

1. Principal test (continued)

2. Principal test

Barometric pressure

at 1013.3 hPa

Barometric pressure

at 1012.3 hPa

Barometric pressure

at 1010.8 hPa

T/oC

drops

+/-

T/oC

drops

+/-

T/oC

drops

+/-

258

5

+

248

3

-

253

5

+

253

5

-

248

4

-

248

8

-

253

10

-

248

5

-

248

9

-

253

2

-

248

6

-

248

10

-

253

3

-

248

8

-

248

4

-

253

8

+

248

9

-

248

3

-

248

8

-

248

7

-

248

7

-

248

2

-

248

9

-

248

1

-

248

10

-

248

5

-

248

2

-

248

6

-

248

1

-

248

8

-

3. Principal test

Barometric pressure

at 1011.0  hPa

T/oC

drops

+/-

253

8

+

248

8

-

248

9

-

248

7

-

248

10

-

248

6

-

248

5

-

248

7

-

248

1

-

248

2

-

248

3

-

248

4

-

248

8

-

The self-ignition temperature of the test item is 250 oC.

Conclusions:
In a valid guideline study the self-ignition temperature of the test item is 250 °C.
Executive summary:

In a valid guideline study the self-ignition temperature of the test item is 250 °C.

Description of key information

For the endpoint auto flammability data of two source chemicals n-BMA and 2 -EHMA are available.

The auto flammability is reported to be 250°C for 2 -EHMA and 290°C (294°C) for nBMA,

thus the auto flammebility of n-HMA is predicted to be higher than 250°C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
250 °C

Additional information

For the endpoint auto flammability data of two source chemicals n-BMA and 2 -EHMA are available.

The auto flammability is reported to be 250°C for 2 -EHMA and 290°C (294°C) for nBMA,

thus the auto flammebility of n-HMA is predicted to be higher than 250°C.