Registration Dossier
Registration Dossier
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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.
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EC number: 208-052-8 | CAS number: 506-77-4
Endpoint summary
Administrative data
Description of key information
Additional information
Appearance/physical state/odor:
The substance is an inorganic, colourless, hygroscopic gas at 20ºC and 1013 hPa with lachrimating, irritating, pungent odour.
References:
- GESTIS-database 2015
- Lewis, R.J. Sax's Dangerous Properties of Industrial Materials. 10th ed. Volumes 1-3 New York, NY: John Wiley & Sons Inc., 1999., p. V2: 1027
Freezing point:
The freezing point is -6.55 to -6.9°C.
References:
- GESTIS-database 2015
- Haynes, W.M. (ed.) CRC Handbook of Chemistry and Physics. 91st ed. Boca Raton, FL: CRC Press Inc., 2010-2011, p. 4-56]
Boiling point:
The boiling point is 12.9 to 13°C at atmospheric pressure.
References:
- GESTIS-database 2015
- Haynes, W.M. (ed.) CRC Handbook of Chemistry and Physics. 91st ed. Boca Raton, FL: CRC Press Inc., 2010-2011, p. 4-56
Density:
Density at 4°C is 1.218 g/cm3; density at 20°C is 1.186 g/cm3. Vapor density is 1.98 (air=1)
References:
- GESTIS-database 2015
- Lide, D.R., G.W.A. Milne (eds.). Handbook of Data on Organic Compounds. Volume I. 3rd ed. CRC Press, Inc. Boca Raton ,FL. 1994., p. V3: 2127
- Lewis, R.J. Sax's Dangerous Properties of Industrial Materials. 10th ed. Volumes 1-3 New York, NY: John Wiley & Sons Inc., 1999., p. V2: 1027
Vapor pressure:
The vapor pressures at different temperatures are: 0.4 bar at -10°C / 0.6 bar at 0°C / 0.9 bar at 10°C / 1.336 bar at 20°C / 1.9 bar at 30°C / 3.6 bar at 50°C.
Reference:
- GESTIS-database 2015
Surface tension of an aqueous solution:
The surface tension is 0.0246 N/m at 10°C.
Reference:
- U.S. Coast Guard, Department of Transportation. CHRIS - Hazardous Chemical Data. Volume II. Washington, D.C.: U.S. Government Printing Office, 1984-5.
Water solubility:
The test item has a water solubility of 27.5 mg/l at 25°C and 60 g/l at 0°C. It hydrolyzes rapidly.
References:
- ATSDR; Toxicological Profile for Cyanide. 4. Chemical and Physical Information. Atlanta, GA: Agency for Toxic Substances and Disease Registry, US Public Health Service (2006). Available from, as of Sept 12, 2013
- Handbook of Aqueous Solubility Data: An Extensive Compilation of Aqueous Solubility Data for Organic Compounds Extracted from the AQUASOL dATAbASE. CRC Press LLC, Boca Raton, FL. 2003., p. 16
Partition coefficient:
The partition coefficient n-octanol/water log Pow was estimated to be 0.64 at room temperature.
Reference:
- Internal company data)
Solubility in organic solvents:
Soluble in Ethanol and ethylether at room temperature.
Reference:
Haynes, W.M. (ed.) CRC Handbook of Chemistry and Physics. 91st ed. Boca Raton, FL: CRC Press Inc., 2010-2011, p. 4-56
Flash point:
The flash point was reported to be 51°C (closed cup).
Reference:
- Pohanish, R.P. (ed). Sittig's Handbook of Toxic and Hazardous Chemical Carcinogens 5th Edition Volume 1: A-H,Volume 2: I-Z. William Andrew, Norwich, NY 2008, p. 758
Explosiveness:
Based on chemical structure and information on handling and use the substance was considered non-explosive. However, there is a risk of explosion in contact with fluorine, hydrogen chloride, polymerization initiators like acids and iron salts.
References:
- Internal expert assessment
- GESTIS-database 2015
Oxidizing properties:
From the assessment of the chemical structure it was established that the test substance would not have oxidizing properties.
References:
- Internal expert assessment
- GESTIS-database 2015
Hazardous reactions:
a) Thermal decomposition: decomposition when heated.
b) Decompositon products: combustion- and pyrolysis-gases of chlorine containing compounds contain hydrogen chloride, chlorine, phosgene; dioxines and other poisonous or corrosive substances in different concentrations. At the decomposition by heat, water or watervapour hydrogen cyanide and nitrous gases can also be released.
c) Hazardous chemical reactions: Tends to polymerize spontaneously. This reaction will be catalysed by traces of metal, metal salts or acids. It may proceed explosively. The substance can react dangerously with water, alcohols, acetylene, benzene and chlorine.
References:
- GESTIS-database 2015
- HSDB-database 2015
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