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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Flammability

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Administrative data

Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Scientifically acceptable

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2009
Report date:
2009

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
other: VDI 2263 Part 1, Test Methods for the Determination of the Safety Characteristic of Dusts. 1990, Verein Deutscher Ingenieure: Dusseldorf. p. 26
Qualifier:
equivalent or similar to guideline
Guideline:
EU Method A.10 (Flammability (Solids))
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
N-sodiohexamethyldisilazane
EC Number:
213-983-8
EC Name:
N-sodiohexamethyldisilazane
Cas Number:
1070-89-9
Molecular formula:
C6H19NSi2.Na
IUPAC Name:
sodiobis(trimethylsilyl)amine
Details on test material:
- Name of test material (as cited in study report): NaHMDS powder
- Analytical purity: 98.5 w%
- Impurities (identity and concentrations): rest level at 0.3-
0.4 w% THF along with 0.19 w% NaOH

Results and discussion

Any other information on results incl. tables

The burning rate of the sample was determined to be >>100 mm/s. The heat of combustion was so intense that the ceramic plate

was cracked / destroyed after the test.

Solid materials can be classified as class 1-6 according to the FPI (fire propagation index). NaHMDS

classifies as class 6 solid. The FPI is a criterion for the spread of a fire after the local action of a sufficiently powerful ignition source.

Applicant's summary and conclusion