2-Methyl-2,4-pentanediol

2-Methyl-2,4-pentanediol
2-Methyl-2,4-pentanediol
IUPAC name
2-Methyl-2,4-pentanediol
Other names
Hexylene glycol; Diolane; 1,1,3-Trimethyltrimethylenediol; 2,4-Dihydroxy-2-methylpentane
Identifiers
Abbreviations MPD
CAS number 107-41-5 YesY
PubChem 7870
ChemSpider 7582 YesY
UNII KEH0A3F75J YesY
Jmol-3D images Image 1
Properties
Molecular formula C6H14O2
Molar mass 118.17 g mol−1
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

2-Methyl-2,4-pentanediol (MPD) is a chemical used in industrial coatings and as a chemical intermediate.[1] Total European and USA production was 15000 tonnes in 2000.[1] Its hydroxy groups give it some water solubility while the hydrocarbon portion of the molecule makes it compatible with oils, giving it surfactant and emulsion stabilizing properties, while its viscosity can be used to control the flow properties of industrial products including coatings, cleansers, solvents and hydraulic fluids.[2]

In the laboratory it is a common precipitant and cryoprotectant in protein crystallography.[3]

2-Methyl-2,4-pentanediol exists as two enantiomers, 4R(-) and 4S(+). In the Protein Data Bank, the 3-letter code "MPD" refers to the (S)-(-) enantiomer, while "MRD" is used to refer to the (R)-(+) version. Commercially sold products labeled "MPD" are often the racemate[4], also sold as and referred to as "hexylene glycol[5]."

References

  1. ^ a b SIDS Initial Assessment Report for SIAM 13: Hexylene Glycol
  2. ^ Chemicalland21.com Hexylene glycol
  3. ^ Crystallization Techniques: Additives, Enrico Stura, University of Glasgow
  4. ^ MPD at Hampton Research , MPD Product Page
  5. ^ Hexylene Glycol at Sigma Aldrich , Hexylene Glycol Product Page


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