Fatty acids, C10-12, esters with polylactic acid, sodium salts

Appearance / physical state / colour

Link to relevant study record(s)

Reference

Endpoint:

appearance / physical state / colour

Type of information:

experimental study

Adequacy of study:

key study

Study period:

24 July_2012

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Study was not performed in compliance with GLP requirements because the test was performed as pilot study prior to the test on the determination of the flammability according to EU Method A.10.

Qualifier:

according to guideline

Guideline:

other: ADR definition (General definition on hazardous substances and materials)

Deviations:

no

Principles of method if other than guideline:

Definition:
The penetration time is expressed in mm penetration depth of a standardized perforated plate after 5 and additional 55 seconds.
Principle of test method:
The standardized perforated plate is placed on the material to be analyzed. The temperature of the material is adjusted to 35°C +/- 0.5°C. After 5 and additional 55 seconds (in total 60 seconds) the penetration depth is measured.
Technical equipment:
Testotherm temperature sensor and pentrometer

GLP compliance:

no

Physical state at 20°C and 1013 hPa:

liquid

Remarks:

solid according to ADR classification system

Form:

viscous

Colour:

yellowish to brownish /amber

Odour:

slight

Substance type:

organic

Conclusions:

The physical state of dermosoft decalact can be specified as
yellowish - brownish (amber) ,
highly viscous liquid
with a characteristic slightly odour.

Executive summary:

The test substance is a highly viscous, but still capable of flowing liquid. This was confirmed by the receiving inspection at the testing facility. Due to the highly viscous appearance the study director decided to perform a penetration test to be able to decide which test has to and is technically feasable to perform with regard to flammability or self ignition.

The penetration test was performed according to ADR definition on hazardous substances and materials. According to this classification a substance is pasty if the penetration gauge indicates after a loading of 5 s +/- 1 s a penetration depth of less than 15.0 mm +/- 0.3 mm or the additional penetration after an additional loading time of 55s +/- 0.5s is less than 5.0 mm +/- 0.5 mm.

The penetration test identifies the test item as solid or pasty. Therefore the test item was analysed for the flammability method EEC. A.10.

Nevertheless substances are generally tested visually/organoleptical at incoming testing facilities. Since the receiving inspection confirms the appearance of the test substance as specified by us as amber, highly viscous liquid we decided that this is the best description of the physical state if the substance at 20°C , 1013 hPa

Description of key information

The substance is a yellowish to brownish (amber), highly viscous liquid (visual inspection).

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:

liquid

Form:

liquid: viscous

Colour:

brown

yellow

Additional information

The result of the penetration test was that the substance is solid/pasty according to ADR limits. Since the substance is still capable to flow, it is reliable to describe the appearance of the substance at 20 °C (1013 hPa) as highly viscous liquid.