Registration Dossier

Administrative data

Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Study completed 14th October 2011
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with generally accepted scientific standards and described in sufficient detail

Data source

Reference
Reference Type:
other company data
Title:
Unnamed
Year:
2011
Report Date:
2011

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
EU Method A.16 (Relative Self-Ignition Temperature for Solids)
GLP compliance:
no
Remarks:
internal company data

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
beta-Carotene Crystalline
Supplement.name: b,b-carotene; 1,18-(3,7,12,16-tetramethyl-1,3,5,7,9,11,13,15,17-octadecanonaen-1,18-diyl)-
bis-(2,6,6-trimethylcyclohexene)
Sample marking: WC01107221
Product code: 0480487

Results and discussion

Relative self-ignition temperature (solids)
Remarks on result:
no self-ignition observed up to the melting point

Any other information on results incl. tables

High pressure differential scanning calorimetry HP-DSC

T Onset °C

T Peakmaximum °C

dH Decomp. J/g

Q Max mW/g

Behaviour

52

120

-5910

6780

Very strong exotherm

2. Scan with the same sample (determination of the residual heat)

-

-

-

-

No residual heat detected

 

Pressure before test (at starting temp.): 5 bar

Pressure after test (at starting temp.): 5 bar Loss of weight after test: 50.4%

Comment: The measured heat of oxidation (-5910 J/g) reveals a high affinity of the sample material towards oxygen.

 

 

 

Relative auto-flammability of solids

Sample as is

T Onset °C

T Peakmaximum °C

dT Max °C

T Reference °C

dT/dt Max °C/min

Behaviour

100

167*

27*

140

3.9*

Start of an exotherm, however melting of the substance

Auto ignition temperature (A16): No autoignition up to the melting point Loss of weight after test: 96.5%

Comment: Aspect: After the test a very small amount of black residue remains in the basket

* no reliable information about the oxidation behavior of the sample material can be given for

temperatures above the melting point!

Sample after exposure to Nitrogen and traces of Oxygen at 40°C for 4 weeks.

T Onset °C

T Peakmaximum °C

dT Max °C

T Reference °C

dT/dt Max °C/min

Behaviour

80

165*

28

137

3.5

Melting during exotherm

Auto ignition temperature (A16): No autoignition up to the melting point Loss of weight after test: 93.8%

Comment: Slightly reduced onset in the Grewer oven due to exposure to heat.

Aspect: After the test a very small amount of black residue remains in the basket

* no reliable information about the oxidation behavior of the sample material can be given for

temperatures above the melting point!

Applicant's summary and conclusion

Conclusions:
No self-ignition observed up to the melting point