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Diss Factsheets

Physical & Chemical properties

Flammability

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Endpoint:
substances / mixtures which in contact with water emit flammable gases
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
other:
Endpoint:
pyrophoric solids
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
other:
Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
14 Mar 2008
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods with acceptable restrictions
Qualifier:
according to guideline
Guideline:
other: VDI 2263, part 1, Test methods for the Determination of the Safety characteristics of Dusts
Principles of method if other than guideline:
Determination of a burning index at 25 °C and 100 °C.
If a burning index of 3 or less is found, the substance should not be classified as a flammable solid and no further testing is required.
GLP compliance:
not specified
Test procedure:
other: burning index at room temperature
Remarks:
result: burning index 1
Remarks on result:
other: burning index 1 correlates to: no spreading of fire, type of reaction: no ignition
Test procedure:
other: burning index at 100 °C
Remarks:
result: burning index 1
Remarks on result:
other: burning index 1 correlates to: no spreading of fire, type of reaction: no ignition

Results at room temperature:

Ignition source: Gas flame

Observation: The test sample melts during direct contact with gas flame. No ignition of the test sample.

Burning index: 1

 

Results at 100 °C:

Ignition source: Gas flame

Observation: The test sample melts during direct contact with gas flame. No ignition of the test sample.

Burning index: 1

 

Final result:

Burning index: 1

Classification: No classification as flammable solid

Further testing required: No

Endpoint:
self-heating substances / mixtures
Type of information:
experimental study
Adequacy of study:
key study
Study period:
19 Feb - 20 Feb 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose for cross-reference:
reference to same study
Qualifier:
according to guideline
Guideline:
UN Manual of Tests and Criteria: Test N.4 (Test method for self-heating substances)
Qualifier:
according to guideline
Guideline:
other: VDI 2263, Grewer Oven
Version / remarks:
1990
GLP compliance:
yes (incl. QA statement)
Remarks:
Hess. Ministerium für Umwelt, Klimaschutz, Landwirtschaft und Verbraucherschutz, Wiesbaden, Germany
Specific details on test material used for the study:
Storage conditions: ambient temperature, dry
Test procedure:
other: 8 cm^3 wire basket in Grewer oven
Max. temp. reached:
350
Result:
negative outcome (no effect observed)
Remarks on result:
other: melting of test item between 130 and 170 °C

Results

Self-ignition in the Grewer Oven
In the investigation of self-ignition in the Grewer Oven the pure test item showed two endothermic effects in the temperature ranges from 70 °C to 100 °C and from 130 °C to 170 °C, which can be assigned to a separation of crystallisation water (drying) and the melting of the test item. After the experiment was accomplished, the basket of the pure test item was found empty.

Table 1: Results of the screening test for self-ignition in the Grewer Oven

Experiment

Onset self-ignition [°C]

Maximum temperature [°C]

Pure test item

---

---

 

As the test item melted in the screening-test in the Grewer Oven before any self-heating effect occured, the Bowes-Cameron-Cage Test has not been required and the test item does not have to be classified as self-heating substance in Class 4 Division 4.2 according to the UN Transport Regulation.

Final Results / Classification
The pure test item Isomalt-GS Typ PF melted at atmospheric pressure in the temperature range from 70 °C to 170 °C, i.e. before any self-heating effect occurred.

According to this result of the tests on the self-ignition in the Grewer Oven the test item is classified as follows:

UN Transport Regulation: The test item is not classified as self-heating substance in class 4, division 4.2 according to the UN Transport Regulation.

GHS / CLP Regulation EC 1272/2008 Annex 1: 2.11: The test item is not classified as self-heating substance according to GHS/CLP Regulation EC 1272/2008 Annex 1: 2.11, respectively.

Endpoint:
self-heating substances / mixtures
Type of information:
experimental study
Adequacy of study:
key study
Study period:
19 Feb - 20 Feb 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose for cross-reference:
reference to same study
Qualifier:
according to guideline
Guideline:
UN Manual of Tests and Criteria: Test N.4 (Test method for self-heating substances)
Qualifier:
according to guideline
Guideline:
other: VDI 2263, Grewer Oven
Version / remarks:
1990
GLP compliance:
yes (incl. QA statement)
Remarks:
Hess. Ministerium für Umwelt, Klimaschutz, Landwirtschaft und Verbraucherschutz, Wiesbaden, Germany
Specific details on test material used for the study:
Storage conditions: ambient temperature, dry
Test procedure:
other: 8 cm^3 wire basket in Grewer oven
Max. temp. reached:
350
Result:
negative outcome (no effect observed)
Remarks on result:
other: melting of test item between 120 and 160 °C

Results

Self-ignition in the Grewer Oven
In the investigation of self-ignition in the Grewer Oven the pure test item showed two endothermic effects in the temperature ranges from 70 °C to 100 °C and from 120 °C to 160 °C, which can be assigned to a separation of crystallisation water (drying) and the melting of the test item. After the experiment was accomplished, the basket of the pure test item was found empty.

Table 1: Results of the screening test for self-ignition in the Grewer Oven

Experiment

Onset self-ignition [°C]

Maximum temperature [°C]

Pure test item

---

---

 

As the test item melted in the screening-test in the Grewer Oven before any self-heating effect occured, the Bowes-Cameron-Cage Test has not been required and the test item does not have to be classified as self-heating substance in Class 4 Division 4.2 according to the UN Transport Regulation.

Final Results / Classification
The pure test item Isomalt-ST Typ PF melted at atmospheric pressure in the temperature range from 70 °C to 160 °C, i.e. before any self-heating effect occurred.

According to this result of the tests on the self-ignition in the Grewer Oven the test item is classified as follows:

UN Transport Regulation: The test item is not classified as self-heating substance in class 4, division 4.2 according to the UN Transport Regulation.

GHS / CLP Regulation EC 1272/2008 Annex 1: 2.11: The test item is not classified as self-heating substance according to GHS/CLP Regulation EC 1272/2008 Annex 1: 2.11, respectively.

Description of key information

No flammability on ignition (VDI 2263, part 1, Test methods for the Determination of the Safety characteristics of Dusts)

No pyrophoricity.

No flammability on contact with water.

Not self-heating (Grewer Oven test)

Key value for chemical safety assessment

Flammability:
not classified

Additional information

The test sample melts during direct contact with gas flame. No ignition of the test sample.

Based on the chemical structure and experience in handling and use, pyrophoricity and flammability on contact with water are not expected.

Not self-heating, the substance melted before self-heating could be observed.

Justification for classification or non-classification

The available data on flammability of the test substance do not meet the criteria for classification according to Regulation (EC) 1272/2008, and are therefore conclusive but not sufficient for classification:

No propagation of burning in a test according to VDI 2263, part 1, Test methods for the Determination of the Safety characteristics of Dusts.

Based on the chemical structure and experience in handling and use, pyrophoricity and flammability on contact with water are not expected.

No self-heating seen (Grewer oven test).