2-Methyl-2-butanol

2-Methyl-2-butanol
2-Methyl-2-butanol
Identifiers
CAS number 75-85-4 YesY
PubChem 6405
ChemSpider 6165 YesY
UNII 69C393R11Z YesY
EC number 200-908-9
UN number 1105
KEGG D02931 YesY
MeSH tert-amyl+alcohol
ChEMBL CHEMBL44658 YesY
RTECS number SC0175000
Beilstein Reference 1361351
Jmol-3D images Image 1
Properties
Molecular formula C5H12O
Molar mass 88.15 g mol−1
Exact mass 88.088815006 g mol−1
Appearance Colourless liquid
Odor Camphorous, peppermint
Density 805 mg cm−1
Melting point

-9 °C, 264 K, 16 °F

Boiling point

101-103 °C, 374-376 K, 214-217 °F

Solubility in water 120 g dm−3
log P 1.095
Vapor pressure 1.6 kPa (at 20 °C)
Refractive index (nD) 1.405
Thermochemistry
Std enthalpy of
formation
ΔfHo298
−380.0–−379.0 kJ mol−1
Std enthalpy of
combustion
ΔcHo298
−3.3036–−3.3026 MJ mol−1
Standard molar
entropy
So298
229.3 J K−1 mol−1
Hazards
MSDS hazard.com
GHS pictograms The flame pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) The exclamation-mark pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)
GHS signal word DANGER
GHS hazard statements H225, H315, H332, H335
GHS precautionary statements P210, P261
EU Index 603-007-00-2
EU classification Flammable F Harmful Xn
R-phrases R11, R20, R37/38
S-phrases (S2), S46
NFPA 704
NFPA 704.svg
3
1
0
Flash point 19 °C
Autoignition
temperature
437 °C
Explosive limits 9%
 YesY (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

2-Methyl-2-butanol, also known as tert-amyl alcohol or amylene hydrate, is one of the isomers of amyl alcohol. It is a clear, colorless liquid with a strong odor of peppermint or camphor.[2][3] In humans it possesses sedative, hypnotic, and anticonvulsant effects similar to ethanol through ingestion or inhalation, and was previously used in medicine for this purpose.[4] It is active in doses of 2,000-5,000 mg, making it some 20 times more potent than regular ethanol.[5][6] Its hypnotic potency is between that of chloral hydrate and paraldehyde.[7] 2-methyl-2-butanol is similar in structure to ethchlorvynol and methylpentynol. It is a byproduct of the fermentation of grain. [8] It is also present in hops. In humans, 2-methyl-2-butanol is metabolized primarily via gluconoridation and oxidation to 2,3-dihydroxy-2-methylbutane.[9] Overdose produces symptoms similar to alcohol poisoning and is a medical emergency.

See also

References

  1. ^ "tert-amyl alcohol - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 26 March 2005. Identification and Related Records. http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=6405&loc=ec_rcs. Retrieved 12 November 2011. 
  2. ^ Coblentz, Virgil. The Newer Remedies: A reference manual for physicians, pharmacists, and students. 1899. [1]
  3. ^ H.C. Wood & R.M. Smith. Therapeutic Gazette - A monthly journal of physiological and clinical therapeutics. Vol 3, 1887. [2]
  4. ^ Robert A. Lewis. Lewis' Dictionary of Toxicology, 1998
  5. ^ Hans Brandenberger & Robert A. A. Maes. Analytical Toxicology for Clinical, Forensic and Pharmaceutical Chemists, 1997 [3]
  6. ^ D.W. Yandell et al. (1888). "Amylene hydrate, a new hypnotic". The American Practitioner and News 5. http://books.google.com/books?id=Ra5YAAAAMAAJ&pg=PA88#v=onepage. 
  7. ^ F.A. Castle & C. Rice (March 1888). "Amylene and amylene hydrate". The American Druggist 17 (3): 58. http://books.google.com/books?id=gNIAAAAAYAAJ&lpg=PA58&ots=CjKZ2BtKrR&dq=amylene%20hydrate%20potency&pg=PA58#v=onepage&q=&f=false. 
  8. ^ Gould, G.M. (1910). The Practitioner's Medical Dictionary. Blakiston's Son & Co.. 
  9. ^ Collins, A. S.; Sumner, S. C.; Borghoff, S. J.; Medinsky, M. A. (1999). "A physiological model for tert-amyl methyl ether and tert-amyl alcohol: Hypothesis testing of model structures". Toxicological sciences : an official journal of the Society of Toxicology 49 (1): 15–28. doi:10.1093/toxsci/49.1.15. PMID 10367338.  edit

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