CAS Number:
74-93-1
Sum Formula:
CH4S
German Synonyms:
Methylhydrosulfid | Methylsulfhydrat | Methylmercaptan | Methanthiol
English Synonyms:
Methylsulfhydrate | Methyl mercaptane | Methanethiol
EC Index Number:
016-021-00-3
EC Number:
200-822-1
Properties:
flammable, gas
Temperature Class:
T2
Explosion Group:
IIA
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. Gas 1: flammable gases, category 1
- Press. Gas: Compressed gases
- Acute Tox. 3: acute toxicity by inhalation, category 3
- 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:
GHS Signal Word:
Danger
GHS Hazard Statement:
- H220: Extremely flammable gas.
- H331: Toxic if inhaled.
- H410: Very toxic to aquatic life with long lasting effects.
Boiling point
1
1990
Nabert, K.; Schön, G.
6 °C
UTI: 5510-031-002/20111005
Bibliographic data
| Title | Sicherheitstechnische Kennzahlen brennbarer Gase und Dämpfe (with 6. Supplement) |
| Author | Nabert, K.; Schön, G. |
| Year | 1990 |
| Publisher | Deutscher Eichverlag;Braunschweig (Pub.) |
| Abstract English | Safety values of about 1000 flammable gases and vapors: Explosion limits, ignition temperatures, flash points, explosion pressures. |
| Abstract German | Sicherheitstechnische Kenngrößen von ca. 1000 Gasen und Dämpfen: Explosionsgrenzen, Zündtemperaturen, Flammpunkte, Explosionsdrücke. |
| Language | GERM |
2
2016
BAM
6 °C
UTI: 5001-010-002/20111005
Bibliographic data
| Year | 2016 |
| Title | Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures |
| Database | BAM |
| Publisher | Datenbank BAM-Projekt CHEMSAFE |
| Language | GERM |
Critical density
1
Critical Data
2016
BAM
0.332 g/cm3
UTI: 5001-010-003/20111005
Bibliographic data
| Year | 2016 |
| Title | Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures |
| Database | BAM |
| Publisher | Datenbank BAM-Projekt CHEMSAFE |
| Language | GERM |
Critical point
1
1990
Nabert, K.; Schön, G.
197 °C
UTI: 5510-031-002/20111005
Bibliographic data
| Title | Sicherheitstechnische Kennzahlen brennbarer Gase und Dämpfe (with 6. Supplement) |
| Author | Nabert, K.; Schön, G. |
| Year | 1990 |
| Publisher | Deutscher Eichverlag;Braunschweig (Pub.) |
| Abstract English | Safety values of about 1000 flammable gases and vapors: Explosion limits, ignition temperatures, flash points, explosion pressures. |
| Abstract German | Sicherheitstechnische Kenngrößen von ca. 1000 Gasen und Dämpfen: Explosionsgrenzen, Zündtemperaturen, Flammpunkte, Explosionsdrücke. |
| Language | GERM |
2
2007
BAM
196.8 °C
UTI: 5592-027-001/20111005
| Line no | Critical temperature |
|---|---|
|
|
| 1 | 196.8 °C |
Bibliographic data
| Year | 2007 |
| Title | Gas Encyclopedia |
| Database | BAM |
| URL | https://encyclopedia.airliquide.com/ |
| Language | ENGL |
3
Critical Data
2016
BAM
196.8 °C
UTI: 5001-010-003/20111005
Bibliographic data
| Year | 2016 |
| Title | Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures |
| Database | BAM |
| Publisher | Datenbank BAM-Projekt CHEMSAFE |
| Language | GERM |
Melting point
1
1990
Nabert, K.; Schön, G.
-123 °C
UTI: 5510-031-002/20111005
Bibliographic data
| Title | Sicherheitstechnische Kennzahlen brennbarer Gase und Dämpfe (with 6. Supplement) |
| Author | Nabert, K.; Schön, G. |
| Year | 1990 |
| Publisher | Deutscher Eichverlag;Braunschweig (Pub.) |
| Abstract English | Safety values of about 1000 flammable gases and vapors: Explosion limits, ignition temperatures, flash points, explosion pressures. |
| Abstract German | Sicherheitstechnische Kenngrößen von ca. 1000 Gasen und Dämpfen: Explosionsgrenzen, Zündtemperaturen, Flammpunkte, Explosionsdrücke. |
| Language | GERM |
2
2016
BAM
-123 °C
UTI: 5001-010-002/20111005
Bibliographic data
| Year | 2016 |
| Title | Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures |
| Database | BAM |
| Publisher | Datenbank BAM-Projekt CHEMSAFE |
| Language | GERM |
Molar mass
1
1990
Nabert, K.; Schön, G.
48.1 g/mol
UTI: 5510-031-002/20111005
Bibliographic data
| Title | Sicherheitstechnische Kennzahlen brennbarer Gase und Dämpfe (with 6. Supplement) |
| Author | Nabert, K.; Schön, G. |
| Year | 1990 |
| Publisher | Deutscher Eichverlag;Braunschweig (Pub.) |
| Abstract English | Safety values of about 1000 flammable gases and vapors: Explosion limits, ignition temperatures, flash points, explosion pressures. |
| Abstract German | Sicherheitstechnische Kenngrößen von ca. 1000 Gasen und Dämpfen: Explosionsgrenzen, Zündtemperaturen, Flammpunkte, Explosionsdrücke. |
| Language | GERM |
2
2016
BAM
48.107 g/mol
UTI: 5001-010-002/20111005
Bibliographic data
| Year | 2016 |
| Title | Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures |
| Database | BAM |
| Publisher | Datenbank BAM-Projekt CHEMSAFE |
| Language | GERM |
Relative gas density
1
1990
Nabert, K.; Schön, G.
1.66
UTI: 5510-031-002/20111005
Bibliographic data
| Title | Sicherheitstechnische Kennzahlen brennbarer Gase und Dämpfe (with 6. Supplement) |
| Author | Nabert, K.; Schön, G. |
| Year | 1990 |
| Publisher | Deutscher Eichverlag;Braunschweig (Pub.) |
| Abstract English | Safety values of about 1000 flammable gases and vapors: Explosion limits, ignition temperatures, flash points, explosion pressures. |
| Abstract German | Sicherheitstechnische Kenngrößen von ca. 1000 Gasen und Dämpfen: Explosionsgrenzen, Zündtemperaturen, Flammpunkte, Explosionsdrücke. |
| Language | GERM |
2
2006
1.7
UTI: 5594-049-001/20111005
| Line no | Relative gas density |
|---|---|
|
|
| 1 | 1.7 |
Bibliographic data
| Year | 2006 |
| Title | DIN EN ISO 14912 Gas analysis - Conversion of gas mixture composition data (ISO 14912 :2003) German version EN ISO 14912:2006 |
| Institution | DIN,Deutsches Institut für Normung e.V. |
| Language | ENGL |
3
2016
BAM
1.7
UTI: 5001-010-002/20111005
Bibliographic data
| Year | 2016 |
| Title | Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures |
| Database | BAM |
| Publisher | Datenbank BAM-Projekt CHEMSAFE |
| 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
1990
Nabert, K.; Schön, G.
360 °C
UTI: 5510-031-001/20111005
| ⚠ The reference for the specification in g/m3 is the molar volume at 20 °C |
Bibliographic data
| Title | Sicherheitstechnische Kennzahlen brennbarer Gase und Dämpfe (with 6. Supplement) |
| Author | Nabert, K.; Schön, G. |
| Year | 1990 |
| Publisher | Deutscher Eichverlag;Braunschweig (Pub.) |
| Abstract English | Safety values of about 1000 flammable gases and vapors: Explosion limits, ignition temperatures, flash points, explosion pressures. |
| Abstract German | Sicherheitstechnische Kenngrößen von ca. 1000 Gasen und Dämpfen: Explosionsgrenzen, Zündtemperaturen, Flammpunkte, Explosionsdrücke. |
| Language | GERM |
2
2016
BAM
360 °C
UTI: 5001-010-001/20111005
| [1] Test method: Not a standard method;\ Value only use for a rough estimation |
Bibliographic data
| Year | 2016 |
| Title | Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures |
| Database | BAM |
| Publisher | Datenbank BAM-Projekt CHEMSAFE |
| Language | GERM |
Limiting value for flammability (Tci)
1
2016
BAM
5.7 Mol%
UTI: 5009-059-001/20111005
| Line no | Limiting value for flammability (Tci) |
|---|---|
|
|
| 1 | 5.7 Mol% |
Bibliographic data
| Year | 2016 |
| Title | Recommended Tci values of Gases for Determination of fire potential for the selection of cylinder valve outlets 4.6 Calculation method: ISO 10156:2008 (E) - Draft |
| Database | BAM |
| Publisher | Datenbank BAM-Projekt CHEMSAFE |
| Language | ENGL |
2
2008
5.7 Mol%
UTI: 5537-059-001/20111005
| Line no | Limiting value for flammability (Tci) |
|---|---|
|
|
| 1 | 5.7 Mol% |
Bibliographic data
| Year | 2008 |
| Title | Draft for the revision of ISO 10156 "Gas cylinders – Gas and gas mixture – Determination of fire potential and oxidizing ability" |
| Subtitle | Table 2 —Tci and Li values of flammable gases and vapours |
| Publisher | ISO |
| Institution | ISO - International Organization for Standardization |
| Language | ENGL |
Explosion limits
Lower explosion limit
1
2016
BAM
4.1 Vol%
UTI: 5001-010-001/20111005
| [1] Test method: Not a standard method;\ Value only use for a rough estimation |
Bibliographic data
| Year | 2016 |
| Title | Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures |
| Database | BAM |
| Publisher | Datenbank BAM-Projekt CHEMSAFE |
| Language | GERM |
2
1985
Kuchta, J. M.
3.9 Vol%
UTI: 5513-028-001/20111005
| Line no | Lower explosion limit | Upper explosion limit |
|---|---|---|
|
|
|
| 1 | 3.9 Vol% | 22 Vol% |
Bibliographic data
| Title | Investigation of Fire and Explosion Accidents in the Chemical, Mining, and Fuel-Related Industries - A Manual (Bulletin 680) |
| Author | Kuchta, J. M. |
| Year | 1985 |
| Abstract English | Summary of explosion limits, flash points, ignition temperatures and chemical-physical data of liquid and gaseous compounds (gaseous combustion in air at atmospheric pressure); Appendix A |
| Abstract German | Zusammenstellung von Explosionsgrenzen, Flammpunkten, Zündtemperaturen und chemisch-physikalischen Daten von Flüssigkeiten und Gasen (Explosion in der Gasphase bei Atmosphärendruck); Appendix A |
| Document Number | DEDO-117 |
| Institution | U.S. Bureau of Mines |
| Publisher | United States Government Printing Office |
| Publisher City | Washington |
| Language | ENGL |
3
1990
Nabert, K.; Schön, G.
80 g/m3 ± 10 %
UTI: 5510-031-001/20111005
| ⚠ The reference for the specification in g/m3 is the molar volume at 20 °C |
Bibliographic data
| Title | Sicherheitstechnische Kennzahlen brennbarer Gase und Dämpfe (with 6. Supplement) |
| Author | Nabert, K.; Schön, G. |
| Year | 1990 |
| Publisher | Deutscher Eichverlag;Braunschweig (Pub.) |
| Abstract English | Safety values of about 1000 flammable gases and vapors: Explosion limits, ignition temperatures, flash points, explosion pressures. |
| Abstract German | Sicherheitstechnische Kenngrößen von ca. 1000 Gasen und Dämpfen: Explosionsgrenzen, Zündtemperaturen, Flammpunkte, Explosionsdrücke. |
| Language | GERM |
4
1990
Nabert, K.; Schön, G.
4.1 Vol% ± 10 %
UTI: 5510-031-001/20111005
| ⚠ The reference for the specification in g/m3 is the molar volume at 20 °C |
Bibliographic data
| Title | Sicherheitstechnische Kennzahlen brennbarer Gase und Dämpfe (with 6. Supplement) |
| Author | Nabert, K.; Schön, G. |
| Year | 1990 |
| Publisher | Deutscher Eichverlag;Braunschweig (Pub.) |
| Abstract English | Safety values of about 1000 flammable gases and vapors: Explosion limits, ignition temperatures, flash points, explosion pressures. |
| Abstract German | Sicherheitstechnische Kenngrößen von ca. 1000 Gasen und Dämpfen: Explosionsgrenzen, Zündtemperaturen, Flammpunkte, Explosionsdrücke. |
| Language | GERM |
Upper explosion limit
1
2016
BAM
21 Vol%
UTI: 5001-010-001/20111005
| [1] Test method: Not a standard method;\ Value only use for a rough estimation |
Bibliographic data
| Year | 2016 |
| Title | Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures |
| Database | BAM |
| Publisher | Datenbank BAM-Projekt CHEMSAFE |
| Language | GERM |
2
1985
Kuchta, J. M.
22 Vol%
UTI: 5513-028-001/20111005
| Line no | Lower explosion limit | Upper explosion limit |
|---|---|---|
|
|
|
| 1 | 3.9 Vol% | 22 Vol% |
Bibliographic data
| Title | Investigation of Fire and Explosion Accidents in the Chemical, Mining, and Fuel-Related Industries - A Manual (Bulletin 680) |
| Author | Kuchta, J. M. |
| Year | 1985 |
| Abstract English | Summary of explosion limits, flash points, ignition temperatures and chemical-physical data of liquid and gaseous compounds (gaseous combustion in air at atmospheric pressure); Appendix A |
| Abstract German | Zusammenstellung von Explosionsgrenzen, Flammpunkten, Zündtemperaturen und chemisch-physikalischen Daten von Flüssigkeiten und Gasen (Explosion in der Gasphase bei Atmosphärendruck); Appendix A |
| Document Number | DEDO-117 |
| Institution | U.S. Bureau of Mines |
| Publisher | United States Government Printing Office |
| Publisher City | Washington |
| Language | ENGL |
3
1990
Nabert, K.; Schön, G.
420 g/m3 ± 5 %
UTI: 5510-031-001/20111005
| ⚠ The reference for the specification in g/m3 is the molar volume at 20 °C |
Bibliographic data
| Title | Sicherheitstechnische Kennzahlen brennbarer Gase und Dämpfe (with 6. Supplement) |
| Author | Nabert, K.; Schön, G. |
| Year | 1990 |
| Publisher | Deutscher Eichverlag;Braunschweig (Pub.) |
| Abstract English | Safety values of about 1000 flammable gases and vapors: Explosion limits, ignition temperatures, flash points, explosion pressures. |
| Abstract German | Sicherheitstechnische Kenngrößen von ca. 1000 Gasen und Dämpfen: Explosionsgrenzen, Zündtemperaturen, Flammpunkte, Explosionsdrücke. |
| Language | GERM |
4
1990
Nabert, K.; Schön, G.
21 Vol% ± 5 %
UTI: 5510-031-001/20111005
| ⚠ The reference for the specification in g/m3 is the molar volume at 20 °C |
Bibliographic data
| Title | Sicherheitstechnische Kennzahlen brennbarer Gase und Dämpfe (with 6. Supplement) |
| Author | Nabert, K.; Schön, G. |
| Year | 1990 |
| Publisher | Deutscher Eichverlag;Braunschweig (Pub.) |
| Abstract English | Safety values of about 1000 flammable gases and vapors: Explosion limits, ignition temperatures, flash points, explosion pressures. |
| Abstract German | Sicherheitstechnische Kenngrößen von ca. 1000 Gasen und Dämpfen: Explosionsgrenzen, Zündtemperaturen, Flammpunkte, Explosionsdrücke. |
| Language | GERM |
Maximum experimental safe gap
1
2016
BAM
1.18 mm
UTI: 5001-010-001/20111005
| [1] Test method: Not a standard method;\ Value only use for a rough estimation |
Bibliographic data
| Year | 2016 |
| Title | Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures |
| Database | BAM |
| Publisher | Datenbank BAM-Projekt CHEMSAFE |
| Language | GERM |
2
1981
Möller, W.
1.18 mm
UTI: 5535-000-001/20111005
| Line no | Maximum experimental safe gap |
|---|---|
|
|
| 1 | 1.18 mm |
Bibliographic data
| Author | Möller, W. |
| Year | 1981 |
| Title | Experimentelle Bestimmung der sicherheitstechnischen Kenngrößen |
| Abstract English | Measurement of the maximum experimental safe gap of methanethiol. |
| Abstract German | Messwerte der Normspaltweite von Methanthiol. |
| Language | GERM |
Stoichiometric fraction of combustible substance in mixture with air
1
2016
BAM
6.5 Mol%
UTI: 5001-010-001/20111005
| [1] Test method: Not a standard method;\ Value only use for a rough estimation |
Bibliographic data
| Year | 2016 |
| Title | Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures |
| Database | BAM |
| Publisher | Datenbank BAM-Projekt CHEMSAFE |
| Language | GERM |
Stoichiometric fraction of combustible substance in mixture with oxygen
1
2016
BAM
25 Mol%
UTI: 5001-010-001/20111005
| [1] Test method: Not a standard method;\ Value only use for a rough estimation |
Bibliographic data
| Year | 2016 |
| Title | Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures |
| Database | BAM |
| Publisher | Datenbank BAM-Projekt CHEMSAFE |
| Language | GERM |
No entry in database
- External Links:
- GESTIS
- BAM Dangerous Goods Database