Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint:
explosiveness
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Reputable handbook of values for physical - chemical properties. Limited data is provided on methodology.

Data source

Reference
Reference Type:
review article or handbook
Title:
Cyano compounds, inorganic
Author:
Gail E, Gos S, Kulzer R, Lorösach J, Rubo A, Sauer M.
Year:
2000
Bibliographic source:
Ullmannn's Encyclopedia of Industrial Chemistry, Sixth Edition, VCH-Verlag, Weinheim, Germany, pp 159-189

Materials and methods

Test guideline
Qualifier:
no guideline required
Principles of method if other than guideline:
This data is obtained from a reputable handbook of values for physical - chemical properties. Methodology was not specified, but it is assumed to be based on methods found in existing guidelines. Current experience with handling this substance indicates that this data is valid.

Test material

Constituent 1
Chemical structure
Reference substance name:
Hydrogen cyanide
EC Number:
200-821-6
EC Name:
Hydrogen cyanide
Cas Number:
74-90-8
Molecular formula:
CHN
IUPAC Name:
hydrogen cyanide

Results and discussion

Small-scale preliminary testsopen allclose all
Parameter:
other: More sensitive to shock than m-dinitrobenzene
Remarks:
migrated information
Remarks on result:
not measured/tested
Parameter:
other: More sensitive to friction than m-dinitrobenzene
Remarks:
migrated information
Remarks on result:
not measured/tested
Parameter:
other: Explosive under influence of flame
Remarks:
migrated information
Remarks on result:
positive (not further specified)
Remarks:
at 5.5-46.5% (v/v)

Applicant's summary and conclusion

Conclusions:
According to Ullmann's Encyclopedia of Industrial Chemistry, the explosive range in air of HCN is 5.5 - 46.5% (v/v)
Executive summary:

The explosive range of HCN is 5.5 - 46.5% (v/v) in air.