Pentaerythritol

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Pentaerythritol
Pentaerythritol.svg
Pentaerythritol-3D-balls.png
Identifiers
CAS number 115-77-5 YesY
ChemSpider 7984 N
UNII SU420W1S6N YesY
Jmol-3D images Image 1
Properties
Molecular formula C5H12O4
Molar mass 136.15
Appearance white solid
Density 1.396g/cm3
Melting point 260.5 °C
Boiling point 276 °C at 30 mmHg
Solubility in water 5.6 g/100 mL at 15 °C
Solubility Soluble in methanol, ethanol, glycerol, ethylene glycol, formamide; insoluble in acetone, benzene, paraffin, ether, CCl4
Hazards
Flash point 200.1 °C (392.2 °F; 473.2 K)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 N (verify) (what is: YesY/N?)
Infobox references

Pentaerythritol is an organic compound with the formula C5H12O4. This white, crystalline polyol with the neopentane backbone is a versatile building block for the preparation of many polyfunctionalized compounds such as the explosive pentaerythritol tetranitrate and pentaerythritol tetraacrylate.[1] Derivatives of pentaerythritol are components of alkyd resins, varnishes, polyvinyl chloride stabilizers, tall oil esters, and olefin antioxidants.

Halogen-free pentaerythritol esters are also environmentally friendly alternative to conventional electrical transformer fluids, being both readily biodegradable and non-hazardous in water. They advantageously replace polychlorobiphenyl (PCB), and even silicone-based or fluorinated hydrocarbons, as dielectric fluid in transformers. Their low volatility and high flash point give them an excellent resistance to ignition in case of major electrical failure and transformer rupture.

Pentaerythritol also finds use in pyrotechnics, as it is needed to make 'blue aluminium'.

References[edit]

  1. ^ S. F. Marrian (1948). "The Chemical Reactions of Pentaerythritol and its Derivatives". Chemical Reviews 43 (1): 149–202. doi:10.1021/cr60134a004. PMID 18876970.