Rhamnolipids: fermentation products of glucose with Pseudomonas putida, Pseudomonadaceae

Flammability

Link to relevant study record(s)

Reference

Endpoint:

flammable solids

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2016-08-22 to 2016-09-28

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

UN Manual of Tests and Criteria: Test N.1 (Test method for readily combustible solids)

Version / remarks:

2009

Deviations:

no

GLP compliance:

yes (incl. QA statement)

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

During the treatment with the flame of the gas burner and within the flame zone, the test item melted to a brown (caramel-colored) liquid and turned into a black solid. The residue was very hard (resin-like). The melted test item started to burn, when the burner flame touched a part of the liquid long enough. But after a short time the flames went out forming a grey smoke.

Interpretation of results:

not classified based on GHS criteria

Conclusions:

The present study was conducted to determine the burning rate of Rhamnolipid according to UN Test method N.1. The test item was not flammable within 2 minutes by the flame of a gas burner within the ignition zone (the first 50 mm of the formed test item).

Executive summary:

In the present test the burning rate of Rhamnolipid was determined according to UN Test method N.1.

A cluster of the test item with a length of 250 mm and a triangular cross-section of 10 mm inner height and 20 mm width was prepared on a non-combustible, non-porous and low heat conducting base plate (clean cool tile). The filled mold was covered and inverted with the tile and the mold was removed. The cluster was ignited at one end with the hot flame of a gas burner. The item was not flammable by ignition with a gas burner flame for 2 min. Therefore, Rhamnolipid is not classified based on GHS criteria.

Description of key information

The present study was conducted to determine the burning rate of Rhamnolipid according to UN Test method N.1. The test item was not flammable within 2 minutes by the flame of a gas burner within the ignition zone (the first 50 mm of the formed test item).

Key value for chemical safety assessment

Flammability:

not classified