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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017
Reliability:
1 (reliable without restriction)
Qualifier:
according to guideline
Guideline:
EU Method A.10 (Flammability (Solids))
GLP compliance:
yes (incl. QA statement)
Specific details on test material used for the study:
Identification: di-tert-butyl hydroquinone
CAS number: 88-58-4
Appearance/Physical state: White solid
Batch: TS140610
Purity: 99.6%
Expiry date: 03 November 2018
Storage conditions: Room temperature in the dark
Test procedure:
burning rate test over 100 mm length
Burning time:
ca. 80 s

The burning times for propagation of combustion over 100 mm after an initial burning distance of 80 mm are shown in the following table:

 

Table 1 Burning Times for the Main Test

 

 

Replicate

Observations

Burning Time (s)

1

The test item melted then ignited and burnt with a yellow flame which emitted a large amount of grey fumes and black particulates.

75

2

The test item melted then ignited and burnt with a yellow flame which emitted a large amount of grey fumes and black particulates.

80

3

The test item melted then ignited and burnt with a yellow flame which emitted a large amount of grey fumes and black particulates.

85

4

The test item melted then ignited and burnt with a yellow flame which emitted a large amount of grey fumes and black particulates.

79

5

The test item melted then ignited and burnt with a yellow flame which emitted a large amount of grey fumes and black particulates.

79

6

The test item melted then ignited and burnt with a yellow flame which emitted a large amount of grey fumes and black particulates.

83

 

 

 

Conclusions:
The test item has been determined to be not highly flammable as it failed to propagate combustion over the 100 mm of the main test in under 45 seconds.
Executive summary:

Flammability (Solids). Not highly flammable, using a procedure designed to be compatible with Method A.10 Flammability (Solids) of Commission Regulation (EC) No 440/2008 of 30 May 2008.

Description of key information

Key value for chemical safety assessment

Additional information

Justification for classification or non-classification

The substance is not classified as it does not meet the appropriate criteria.