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CAS Number: 589-34-4
Sum Formula: C7H16
Molar Mass: 100.2 g/mol
German Synonyms: 3-Methylhexan
English Synonyms: 3-Methylhexane
EC Index Number: 601-008-00-2
EC Number: 209-643-3
Temperature Class: T3
Explosion Group: IIA (estimated)
Structural Formula 3-Methylhexane

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:
  • Flam. Liq. 2: flammable liquids, category 2
  • Asp. Tox. 1: aspiration hazard, category 1
  • Skin Irrit. 2: skin irritation, category 2
  • STOT SE 3: Specific target organ toxicity following single exposure, category 3, respiratory tract irritation or narcotic effects
  • 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 flammable
pictogram health hazard
pictogram harmful
pictogram environmental hazard





GHS Signal Word: Danger
GHS Hazard Statement:
  • H225: Highly flammable liquid and vapour.
  • H304: May be fatal if swallowed and enters airways.
  • H315: Causes skin irritation.
  • H336: May cause drowsiness or dizziness.
  • H410: Very toxic to aquatic life with long lasting effects.

Boiling point
1 1963 Nabert, K.; Schön, G. 1013.25 hPa 92 °C UTI: 1000-1023-15210/0-39
UTI: 1000-1023-15210/0-39;
Line no Boiling temperature Pressure
  • defined value
  • at atmospheric pressure
  • property of pure substance
1 92 °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
Density
1 1963 Nabert, K.; Schön, G. 1013.25 hPa 20 °C 0.69 g/cm3 UTI: 1000-1023-15211/0-39
UTI: 1000-1023-15211/0-39;
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 0.69 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 1991 Physikalisch-Technische Bundesanstalt (PTB) -119 °C UTI: 4801-1023-15216/0-39
UTI: 4801-1023-15216/0-39;
Line no Melting temperature
  • defined value
  • experimental
  • at atmospheric pressure
  • property of pure substance
1 -119 °C
Bibliographic data
Author Physikalisch-Technische Bundesanstalt (PTB)
Year 1991
Title Empfohlene Sicherheitstechnische Kenngrößen
Database PTB
Publisher Datenbank PTB-AG 3.41/3.71
Language GERM
Relative gas density
1 1963 Nabert, K.; Schön, G. 3.46 UTI: 1000-1023-15212/0-39
UTI: 1000-1023-15212/0-39;
Line no Relative gas density
  • defined value
  • property of pure substance
1 3.46
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) 25 °C 0.0026 g/l UTI: 228-1023-15207/0-39
UTI: 228-1023-15207/0-39;
Line no Solubility in water Temperature
  • defined value
  • property of pure substance
  • property of pure substance
1 0.0026 g/l 25 °C
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. 280 °C UTI: 1000-1023-15213/0-39
UTI: 1000-1023-15213/0-39;
Line no Autoignition Temperature
  • recommended value
  • experimental
  • methode not internationally standardized
  • property of pure substance
1 280 °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
Flash point
1 1991 Physikalisch-Technische Bundesanstalt (PTB) -11 °C UTI: 4801-1023-15215/0-39
UTI: 4801-1023-15215/0-39;
Line no Flash point
  • recommended value
  • estimated
  • closed cup
  • property of pure substance
1 -11 °C
Bibliographic data
Author Physikalisch-Technische Bundesanstalt (PTB)
Year 1991
Title Empfohlene Sicherheitstechnische Kenngrößen
Database PTB
Publisher Datenbank PTB-AG 3.41/3.71
Language GERM
2 1963 Nabert, K.; Schön, G. < 0 °C UTI: 1000-1023-15208/0-39
UTI: 1000-1023-15208/0-39;
Line no Flash point
  • experimental
  • closed cup
  • property of pure substance
1 < 0 °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) 1.9 Mol% UTI: 220-1023-15206/0-39
UTI: 220-1023-15206/0-39;
Line no Stoichiometric fraction of combustible substance in mixture with air
  • recommended value
  • property of pure substance
1 1.9 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