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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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Diss Factsheets

Physical & Chemical properties

Flammability

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2010-03-05 to 2010-03-30
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions
Qualifier:
according to guideline
Guideline:
other: UN N.1 according to 33.2.1.4 Bundesanstalt für Materialforschung- und prüfung (BAM), Germany
Deviations:
no
GLP compliance:
no
Key result
Test procedure:
burning rate test: preliminary screening test
Remarks on result:
substance does not ignite and propagate combustion either by burning with flame or smouldering along 200 mm of the powder train within the 2 minutes test period

A Brennwertzahl (BWZ) of 1 (max. 6) was determined in the pre-test. The substance only showed glowing combustion for a short time after removal of the flame. Thus, the substance is considered to be non-flammable. No further test is required.

Interpretation of results:
not classified based on GHS criteria
Conclusions:
Calcium cyanamide, technical grade (Kalkstickstoff) is not flammable in a pre-test according to UN N.1 method.
Executive summary:

Calcium cyanamide, technical grade (Kalkstickstoff) was tested for flammability according to UN N.1 (33.2.1.4 of BAM). A Brennwertzahl (BWZ) of 1 (max. 6) was determined in the pre-test. The substance only showed glowing combustion for a short time after removal of the flame. Thus, the substance is considered to be non-flammable. No further test is required.

Description of key information

In the key study Calcium cyanamide, technical grade (Kalkstickstoff) was categorized in category 1 of 6 regarding flammability. Local burning or glowing without further extension. Thus, the substance is not regarded highly flammable. The lower explosive level in a dust explosion test was determined to be 125 g/m³. In addition, no flammability in contact with water and no pyrophoric abilities are expected. These studies are thus been waived.

Key value for chemical safety assessment

Flammability:
non flammable

Additional information

In the key study, Calcium cyanamide, technical grade (Kalkstickstoff) was tested for flammability according to UN N.1 (33.2.1.4 of BAM).

A Brennwertzahl (BWZ) of 1 (max. 6) was determined in the pre-test. The substance only showed glowing combustion for a short time after removal of the flame. Thus, the substance is considered to be non-flammable. No further test is required.

This is supported in a supporting study where the lower explosion limit of a sample of powdered Calcium cyanamide, technical grade (Kalkstickstoff) in air was determined to be 125 g/m3.

Justification for classification or non-classification

Based on the chemical structure, experience on Handling of the substance and the study results taking into account the provisions laid down in Regulation (EC) No 1272/2008, the substance is not considered to be classified as flammable, flammable in contact with water, pyrophoric, self-reactive substance or organic peroxide.