Propyl-methoxyphenol

When considering biomass as a source of chemical feedstock, it is also important to remember that it is not a homogeneous organic structure. The carbohydrate structures of terrestrial plants are composed of both five-carbon and six-carbon sugar polymers. The lignin component, which binds the polymers together, is an aromatic polymer of nominally propyl-methoxyphenols. In addition, there are proteins and fatty acids/oils, as well as the trace biocomponents that incorporate much of the mineral content. Therefore, processing biomass to chemical products must take into consideration both its bulk chemical structure and its components. 

Figure 6.11 Resulting chromatogram from a Simplex optimization procedure applied to the separation of three antioxidants. Solvents 5% acetonitrile in water (A) and 5% water in acetonitrile (B). Linear gradient 44 to 100% B in A in 1.5 min. Column 10 cm x 5 mm I.D. 5 pm Lichrosorb C-18. Flow rate 2.0 mL/min. Solutes 1 = propyl gallate 2 = 2-t-butyl-p-methoxyphenol (BHA) 3 = unknown 4 = 2,6-di-t-bytul-p-cresol (BHT). Figure taken from ref. [621J. Reprinted with permission.

METHYL-l-PROPYL ACRYLATE (106-63-8) Forms explosive mixture with air (flash point 94°F/34°C). Will polymerize in elevated temperatures (recommended inhibitor 5 ppm hydroquinone or 10-60 ppm p-methoxyphenol). Uncontrolled bulk polymerization can be explosive. Incompatible with strong acids, ahphatic amines, alkanolamines. Flow or agitation of substance may generate electrostatic charges due to low conductivity. 

Synonyms Cerulignol Guaiacylpropane 1-(4-Hydroxy-3-methoxyphenyl) propane (4-Hydroxy-3-methoxyphenyl) propane 4-H y d roxy-3- m et h oxypro py I benzene 2-Methoxy-4-propylphenol 2-Methoxy-4-(1-propyl) phenol 2-Methoxy-4-n-propylphenol Phenol, 2-methoxy-4-propyl- 4-Propylguaiacol p-Propylguaiacol p-n-Propylguaiacol 4-Propylguaiacolcatechol 5-Propyl-o-hydroxyanisole 1-Propyl-3-methoxy-4-hydroxybenzene 4-Propyl-2-methoxyphenol... 

Propyl methoxybenzene. See p-Propyl anisole 1 -Propyl-3-methoxy-4-hydroxybenzene 4-Propyl-2-methoxyphenol. See Dihydroeugenol Propyl-2-methyl butyrate CAS 37064-20-3 Properties Flash pt. (CC) 42 C Uses Fragrance flavor... 

To determine antioxidants in food oils, Vigneron and Spicht [8] extracted an hexane solution of the oil with 1 % ammonium acetate, 32% aqueous acetonitrile and 48% aqueous acetonitrile to isolate propyl, octyl and dodecyl gallates, respectively. As traces of t-butyl-4-methoxyphenol were also extracted by the last solvent, a hexane solution of another portion of the sample was extracted with 30% water (to remove the gallates) and washed with aqueous ammonia, then the BHA was extracted with 72% aqueous ethanol and the BHT remains in the hexane solution. 

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