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Diss Factsheets

Physical & Chemical properties

Flammability

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Endpoint:
substances / mixtures which in contact with water emit flammable gases
Type of information:
experimental study
Adequacy of study:
key study
Study period:
02/02/2010 – 05/02/2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Conducted at a GLP accredited laboratory to GLP
Qualifier:
according to guideline
Guideline:
EU Method A.12 (Flammability (Contact with Water))
Deviations:
no
GLP compliance:
yes
Test procedure:
ignition time on contact with air
Remarks:
Ignition on contact with air refers to either Pyrophoric solids or Pyrophoric liquids depending on physical state (migrated information).
Remarks on result:
no ignition on contact with air (not further specified)
Remarks:
corresponding to 'no' in migrated source record.
Test procedure:
ignition time on contact with air
Remarks:
Ignition on contact with air refers to either Pyrophoric solids or Pyrophoric liquids depending on physical state (migrated information).
Remarks on result:
no ignition on contact with air (not further specified)
Remarks:
corresponding to 'no' in migrated source record.

Test Objective

To test a sample of 2,4-MDI to determine if it generates flammable gas when in contact with water.

Test Information - Initial Tests

1. A small quantity of the sample was placed in a trough of distilled water. It was noted if any gas generation or a spontaneous ignition occurred.

2. A small quantity of the sample was placed in the centre of a filter paper which was floated on the surface of distilled water. It was noted if any gas generation or a spontaneous ignition occurred.

3. A small quantity of the sample was made into a pile with a hollow in the top and a few drops of distilled water were added to the hollow. It was noted if any gas generation or a spontaneous ignition occurred.

Test Results – Initial Tests

No gas generation or spontaneous ignitions were observed during any of the tests.

Test Information – Final Test

10 g of the sample was charged to a round bottom flask which was connected to a pressure equalised dropping funnel containing 20 ml of water and an automated gas burette system. The water was then added rapidly to the flask. The rate and quantity of gas

generated was measured for 7 hours or until the gas generation had ceased. The test was conducted three times.

Test Results – Final Test

No gas generation or spontaneous ignitions were observed during any of the tests. The sample does not generate flammable gases in contact with water.

Conclusions:
Test Objective
To test a sample of 2,4-MDI to determine if it generates flammable gas when in contact
with water.
Test Information - Initial Tests
1. A small quantity of the sample was placed in a trough of distilled water. It was noted
if any gas generation or a spontaneous ignition occurred.
2. A small quantity of the sample was placed in the centre of a filter paper which was
floated on the surface of distilled water. It was noted if any gas generation or a
spontaneous ignition occurred.
3. A small quantity of the sample was made into a pile with a hollow in the top and a
few drops of distilled water were added to the hollow. It was noted if any gas
generation or a spontaneous ignition occurred.
Test Results – Initial Tests
No gas generation or spontaneous ignitions were observed during any of the tests.
Test Information – Final Test
10 g of the sample was charged to a round bottom flask which was connected to a
pressure equalised dropping funnel containing 20 ml of water and an automated gas
burette system. The water was then added rapidly to the flask. The rate and quantity of gas
generated was measured for 7 hours or until the gas generation had ceased. The test was
conducted three times.
Test Results – Final Test
No gas generation or spontaneous ignitions were observed during any of the tests. The sample does not generate flammable gases in contact with water.
Endpoint:
flammability
Remarks:
Pyrophoric liquids/solids (migrated from section 'Flammability')
Type of information:
experimental study
Adequacy of study:
key study
Study period:
02/02/2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Conducted at a GLP accredited laboratory to GLP
Qualifier:
according to guideline
Guideline:
EU Method A.13 (Pyrophoric Properties of Solids and Liquids)
Deviations:
no
GLP compliance:
yes
Test procedure:
ignition time on contact with air
Remarks:
Ignition on contact with air refers to either Pyrophoric solids or Pyrophoric liquids depending on physical state (migrated information).
Remarks on result:
no ignition on contact with air (not further specified)
Remarks:
corresponding to 'no' in migrated source record.
Test procedure:
ignition time on contact with air
Remarks:
Ignition on contact with air refers to either Pyrophoric solids or Pyrophoric liquids depending on physical state (migrated information).
Remarks on result:
no ignition on contact with air (not further specified)
Remarks:
corresponding to 'no' in migrated source record.

Test Objective

To determine if a sample of 2,4-MDI is a pyrophoric solid.

Test Information

A small quantity of the sample (1-2 ml) was dropped from a height of approximately 1 metre onto a non-combustible surface. It was observed if the sample ignited on dropping or within 5 minutes of settling. The test was performed six times.

No ignitions were observed during the six tests. The sample is therefore not a pyrophoric solid.

Conclusions:
No ignitions were observed during the six tests. The sample is therefore not a pyrophoric solid.
Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
19/01/2010 – 20/01/2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Conducted at a GLP accredited laboratory to GLP
Qualifier:
according to guideline
Guideline:
EU Method A.10 (Flammability (Solids))
Deviations:
no
GLP compliance:
yes
Test procedure:
ignition time on contact with air
Remarks:
Ignition on contact with air refers to either Pyrophoric solids or Pyrophoric liquids depending on physical state (migrated information).
Remarks on result:
no ignition on contact with air (not further specified)
Remarks:
corresponding to 'no' in migrated source record.
Test procedure:
ignition time on contact with air
Remarks:
Ignition on contact with air refers to either Pyrophoric solids or Pyrophoric liquids depending on physical state (migrated information).
Remarks on result:
no ignition on contact with air (not further specified)
Remarks:
corresponding to 'no' in migrated source record.

Results of Preliminary Screening

Test Rate of burning (over 200 mm) : N/A

From the preliminary screening test the sample was seen not to ignite and therefore no further testing is required.

Classification of substance : Not Highly Flammable

Comments

The sample melted, but no ignition was observed.

Conclusions:
Classification of substance : Not Highly Flammable

Description of key information

2,4'-MDI was found to be not highly flammable, not pyrophoric, and to have non-hazardous flammability in contact with water.  

Method:  EU A.10, EU A.12, EU A.13

Key value for chemical safety assessment

Additional information

Justification for classification or non-classification