Methanol is formed as a byproduct, aqueous alkaline medium of formaldehyde and acetaldehyde forms pentaerythritol
. The required product is collected from mixture by the process of crystallization.
Polyol esters were synthesized by the esterification reaction of either HFA or FA with pentaerythritol
(PE) [6, 8].
Kinetic and structural basis of reactivity of Pentaerythritol
Tetranitrate reductase with NADPH, 2-Cyclohexenone, Nitroesters and Nitroaromatic explosives.
Synthesis of Spirocyclic Pentaerythritol
Bisphosphorate Disphosphoryl Chloride (SPDPC)
In a round bottomed flask fitted with a water separator device, one mole of the alcohol was mixed with oleic acid (one mole or 2 moles or 4 moles with dodecyl alcohol, propylene glycol and pentaerythritol
respectively), and p-toluenesulphonic acid (1 g).
Then there's the matter of the explosive, pentaerythritol
tetranitrate, or PETN.
A preliminary FBI analysis found that it contained a high explosive known as PETN or pentaerythritol
25 using a device containing PETN, also known as pentaerythritol
, a high explosive.
In 2007, it was said the company was to have a 20,000 t/y pentaerythritol
unit, to be fed with formaldehyde, acetaldehyde and caustic acid procured locally.
In the published results, Thundat and his colleagues claim to be able to detect less than one billionth of a gram of such explosives as trinitrotoluene, pentaerythritol
tetranitrate, and cyclotrimethylenetrinitromine.
Instead of buying methanol, which goes into the manufacturing of its downstream products, the company will produce it at a lower cost, enabling it to become more competitive in international markets The company, formerly Saudi Formaldehyde Chemical Company, will produce from its latest expansion the following products: methanol, carbon monoxide, acetaldehyde, methylamines (MA), dimethyl formamide (DMF), pentaerythritol
In the formulation given in Table 2, trimethylolethane (three carbinol groups) is used as the main polyol instead of pentaerythritol
(four carbinol groups), and the anhydride:polyol molar ratio is less than 1.