Phthalic acid

Flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

self-heating substances / mixtures

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study without detailed documentation

Qualifier:

according to guideline

Guideline:

UN Manual of Tests and Criteria: Test N.4 (Test method for self-heating substances)

Interpretation of results:

not classified based on GHS criteria

Conclusions:

The substance is not self-heating.

Executive summary:

The substance was tested accoridng to UN N.4. No exothermic effect up to the melting range from about 160 °C were observed in the Grewer test, (see Manual of Tests and Criteria, appendix 6, chapter 5.2). Therefore, the substance is not considered to be self-heating.

Reference 2

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study without detailed documentation

Qualifier:

according to guideline

Guideline:

other: UN Test Procedure N.1

Principles of method if other than guideline:

The applied testing method (UN N.1) is identical to the testing method in EC Test Procedure A 10 'Flammability (Solids)’ (sole exception: wetting solution was added beyond the timing zone).

GLP compliance:

yes

The test substance melted when approached by the ignition flame. The flame went out shortly after removing the ignition source; a propagation was not observed. Phthalic acid is not readily combustable.

Executive summary:

Phthalic acid is classified as a not readily combustible solid when tested according to UN Test Procedure N.1 (Currenta, 2010).

Reference 3

Endpoint:

substances / mixtures which in contact with water emit flammable gases

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the organic substance does not contain metals or metalloids and hence, the classification procedure does not need to be applied

GLP compliance:

not specified

Reference 4

Endpoint:

pyrophoric solids

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the substance is known to be stable in contact with air at room temperature for prolonged periods of time (days) and hence, the classification procedure does not need to be applied

Description of key information

Phthalic acid is classified as a not readily combustible solid when tested according to UN Test Procedure N.1 (Currenta, 2010).
Pyrophoric properties:
In accordance with section 1 of REACH Annex XI, the study does not need to be conducted. 
Experience in handling and application of the other tests shows that the substance does not ignite spontaneously on coming into cotact with air at normal temperatures.
Contact with water:
In accordance with section 1 of REACH Annex XI, the study does not need to be conducted. 
No flammability in contact with water: The structural formula of the test item does not contain metals or metalloids (see Manual of Test and Criteria, appendix 6, section 5.3).
self-heating:
No exothermic effect up to the melting range from about 160 °C in the Grewer test (see Manual of Tests and Criteria, appendix 6, chapter 5.2)

Key value for chemical safety assessment

Flammability:

not classified

Justification for classification or non-classification

The substance is not extremely flammable or flammable as referenced by the flash point and auto ignition temperature.

The substance is not fammable in contact with water and has no pyrophoric properties.