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CAS Number: 75-86-5
Sum Formula: C4H7NO
Molar Mass: 85.1 g/mol
German Synonyms: Acetoncyanhydrin | 2-Hydroxy-2-methyl-propionitril | 2-Hydroxy-2-methylpropannitril
English Synonyms: 2-Hydroxy-2-methylpropanenitrile
EC Index Number: 608-004-00-X
EC Number: 200-909-4
Temperature Class: T1
Explosion Group: IIA (estimated)
Structural Formula 2-Hydroxy-2-methylpropanenitrile

Disclaimer: The CLP/GHS classification is not regularly updated in Chemsafe. For up-to-date information, please use the ECHA database. ( https://echa.europa.eu/en/information-on-chemicals )

GHS Hazard and Category:
  • Acute Tox. 2: acute toxicity by inhalation, category 2
  • Acute Tox. 1: acute dermal toxicity, category 1
  • Acute Tox. 2: acute oral toxicity, category 2
  • Aquatic Acute 1: acute hazards to the aquatic environment, category 1
  • Aquatic Chronic 1: long-term hazards hazards to the aquatic environment, category 1
GHS Pictogram:
pictogram toxic
pictogram environmental hazard





GHS Signal Word: Danger
GHS Hazard Statement:
  • H330: Fatal if inhaled.
  • H310: Fatal in contact with skin.
  • H300: Fatal if swallowed.
  • H410: Very toxic to aquatic life with long lasting effects.

Antoine parameters
1 1952 Dreisbach, R.R. 8.2823 Torr UTI: 139-501-343/0-39
UTI: 139-501-343/0-39;
Line no Upper temperature limit of Antoine equation Lower temperature limit of Antoine equation Antoine constant C Antoine constant B Antoine constant A
  • recommended value
  • saturated
  • property of pure substance
  • recommended value
  • saturated
  • property of pure substance
  • recommended value
  • by regression
  • saturated
  • property of pure substance
  • recommended value
  • by regression
  • saturated
  • property of pure substance
  • defined value
  • by regression
  • saturated
  • property of pure substance
1 < 339 °C > 60 °C 230 °C 2159.219 °C 8.2823 Torr
Bibliographic data
Author Dreisbach, R.R.
Year 1952
Title Pressure-Volume-Temperature Relationship of Organic Compounds
Publisher Handbook Publishers, Inc.
Publisher City Sandusky, Ohio, USA
Language ENGL
Boiling point
1 1963 Nabert, K.; Schön, G. 23 Torr 82 °C UTI: 1000-501-360/0-39
UTI: 1000-501-360/0-39;
Line no Pressure Boiling temperature
  • recommended value
  • defined value
  • experimental
  • property of pure substance
1 23 Torr 82 °C [1]
[1] decomposition at 120 °C
Bibliographic data
Author Nabert, K.; Schön, G.
Year 1963
Title Sicherheitstechnische Kennzahlen brennbarer Gase und Dämpfe (mit 6. Nachtrag)
Publisher Deutscher Eichverlag
Publisher City Braunschweig
Abstract English Safety values of about 1000 flammable gases and vapors: Explosion limits, ignition temperatures, flash points, explosion pressures.
Language GERM
Density
1 1963 Nabert, K.; Schön, G. 1013.25 hPa 20 °C 0.93 g/cm3 UTI: 1000-501-361/0-39
UTI: 1000-501-361/0-39;
Line no Density Temperature Pressure
  • defined value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • at atmospheric pressure and room temperature
1 0.93 g/cm3 20 °C 1013.25 hPa
Bibliographic data
Author Nabert, K.; Schön, G.
Year 1963
Title Sicherheitstechnische Kennzahlen brennbarer Gase und Dämpfe (mit 6. Nachtrag)
Publisher Deutscher Eichverlag
Publisher City Braunschweig
Abstract English Safety values of about 1000 flammable gases and vapors: Explosion limits, ignition temperatures, flash points, explosion pressures.
Language GERM
Melting point
1 1963 Nabert, K.; Schön, G. 1013.25 hPa -20 °C UTI: 1000-501-364/0-39
UTI: 1000-501-364/0-39;
Line no Melting temperature Pressure
  • defined value
  • at atmospheric pressure
  • saturated
  • property of pure substance
  • recommended value
  • at atmospheric pressure
  • saturated
1 -20 °C 1013.25 hPa
Bibliographic data
Author Nabert, K.; Schön, G.
Year 1963
Title Sicherheitstechnische Kennzahlen brennbarer Gase und Dämpfe (mit 6. Nachtrag)
Publisher Deutscher Eichverlag
Publisher City Braunschweig
Abstract English Safety values of about 1000 flammable gases and vapors: Explosion limits, ignition temperatures, flash points, explosion pressures.
Language GERM
Relative gas density
1 1963 Nabert, K.; Schön, G. 2.93 UTI: 1000-501-362/0-39
UTI: 1000-501-362/0-39;
Line no Relative gas density
  • defined value
  • property of pure substance
1 2.93
Bibliographic data
Author Nabert, K.; Schön, G.
Year 1963
Title Sicherheitstechnische Kennzahlen brennbarer Gase und Dämpfe (mit 6. Nachtrag)
Publisher Deutscher Eichverlag
Publisher City Braunschweig
Abstract English Safety values of about 1000 flammable gases and vapors: Explosion limits, ignition temperatures, flash points, explosion pressures.
Language GERM
Solubility in water
1 2009 Physikalisch-Technische Bundesanstalt (PTB) UTI: 228-501-357/0-39
UTI: 228-501-357/0-39;
Line no Solubility in water
  • defined value
  • property of pure substance
1 very soluble: more than 150 g/l [1]
[1] very soluble: more than 150 g/l
Bibliographic data
Author Physikalisch-Technische Bundesanstalt (PTB)
Year 2009
Title Wasserlöslichkeit
Database PTB
Publisher Datenbank PTB-Lab. 3.43
Language GERM
  • The oxidizing agent is air with an oxygen content of 20.95 % by volume. In the data base it is usually not specified as mixture component. Exceptions are highlighted.
  • Pressure values are absolute, not gauge pressures.
  • Impurities can strongly influence characteristic safety data, particulary if the properties of the impurity considerably deviate from the respective properties of the pure substance.
  • Safety characteristics are only displayed if evaluated data are available.
  • Values can be cited by using the UTI number of the table (Uniform Table Identifier).
  • Color Codes:         recommended value             no recommendation               do not use value

Autoignition Temperature
1 1963 Nabert, K.; Schön, G. 540 °C UTI: 1000-501-363/0-39
UTI: 1000-501-363/0-39;
Line no Autoignition Temperature
  • recommended value
  • according to german standard
  • property of pure substance
1 540 °C [A]
[A] DIN 51794: Testing of mineral oil hydrocarbons - Determination of ignition temperature; measurements are technically identical to those of ISO/IEC 80079-20-1 but results are treated differently.
Bibliographic data
Author Nabert, K.; Schön, G.
Year 1963
Title Sicherheitstechnische Kennzahlen brennbarer Gase und Dämpfe (mit 6. Nachtrag)
Publisher Deutscher Eichverlag
Publisher City Braunschweig
Abstract English Safety values of about 1000 flammable gases and vapors: Explosion limits, ignition temperatures, flash points, explosion pressures.
Language GERM
Flash point
1 1963 Nabert, K.; Schön, G. 75 °C UTI: 1000-501-358/0-39
UTI: 1000-501-358/0-39;
Line no Flash point
  • recommended value
  • experimental
  • closed cup
  • property of pure substance
1 75 °C
Bibliographic data
Author Nabert, K.; Schön, G.
Year 1963
Title Sicherheitstechnische Kennzahlen brennbarer Gase und Dämpfe (mit 6. Nachtrag)
Publisher Deutscher Eichverlag
Publisher City Braunschweig
Abstract English Safety values of about 1000 flammable gases and vapors: Explosion limits, ignition temperatures, flash points, explosion pressures.
Language GERM
Stoichiometric fraction of combustible substance in mixture with air
1 2005 Physikalisch-Technische Bundesanstalt (PTB) 3.8 Mol% UTI: 220-501-356/0-39
UTI: 220-501-356/0-39;
Line no Stoichiometric fraction of combustible substance in mixture with air
  • recommended value
  • property of pure substance
1 3.8 Mol%
Bibliographic data
Author Physikalisch-Technische Bundesanstalt (PTB)
Year 2005
Title Berechnete molare stöchiometrische Brenngasanteile in Luft (c_stoech)
Database PTB
Publisher Datenbank PTB-Lab. 3.43
Language GERM

No entry in database