Sophorolipids: fermentation products of glucose and rapeseed-oil fatty acids methyl esters with yeast Candida Bombicola

Flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2019

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

other: UN manual of tests and criteria part III

Version / remarks:

33.2.1

GLP compliance:

no

Other quality assurance:

ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)

Key result

Test procedure:

burning rate test: preliminary screening test

Remarks on result:

substance does not ignite and propagate combustion either by burning with flame or smouldering along 200 mm of the powder train within the 2 minutes test period

Interpretation of results:

not classified based on GHS criteria

Conclusions:

From the observations reported it can be concluded the test substance should not be classified as a flammable solid

Reference 2

Endpoint:

pyrophoric liquids

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

guideline study with acceptable restrictions

Qualifier:

according to guideline

Guideline:

EU Method A.13 (Pyrophoric Properties of Solids and Liquids)

Deviations:

not specified

GLP compliance:

no

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.

Conclusions:

The test item was not considered to be pyrophoric in the applied experimental conditions.

Description of key information

The registered substance in its neat form is a solid at room temperature. A combustion test was performed on Freeze dried Sopholiance (Hiseni, 2019). A screening test was performed as described under the United Nations (UN) Recommendations on the Transport of Dangerous Goods, Manual of Test and Criteria, Part III, 33.2.1, Sixth revised edition, 2015. In the conditions of the screening test no fire propagation on the test substance was observed. Therefore it can be concluded that the test substance should NOT be classified as a flammable solid.

 

Key value for chemical safety assessment

Flammability:

not classified

Additional information

The registered substance is placed on the market as an aqueous solution. A study to  determine the pyrophoric properties of Sophorolipids (aqueous solution) is available (Processium 2012). The objective of the test is to determine the spontaneous flammability of a liquid item (in small amounts) a short time after coming into contact with air at room temperature. Liquids are considered to be highly flammable if they ignite at least once out of six tests. The test item is brought into contact with air at a temperature of approximately 20 °C for a period of five minutes. If no ignition occurs, the test item is absorbed onto filter paper and is exposed to air at a temperature of approximately 20 °C for a period of five minutes. If a liquid ignites or chars a filter paper the test item will be considered to be pyrophoric. For both tests, the test item was not considered to be pyrophoric in the applied experimental conditions.