This equation was nonlinearly fitted according to the Powell method (31), using the retention data obtained from injections of the antiepileptic solutions in five mobile phases containing the following combinations of SDS and 1-butanol
: 0.05 mol/L SDS plus 10 or 70 mL/L 1-butanol
; 0.10 mol/L SDS plus 40 mL/L 1-butanol
; or 0.15 mol/L SDS plus 10 or 70 mL/L 1-butanol
Likewise, algal oil was transesterified using ethanol, 1-propanol, 2-propanol, 1-butanol
, 1- pentanol, 1-hexanol and benzyl alcohol to produce the corresponding esters i.e.
Most metals can form complexes with DDC, and most of the complexes are extracted with 1-butanol
. Some complexes are diamagnetic and some are paramagnetic.
Syringe A was loaded with a 0.04 M solution of 5-chlorobenzo[b]pyrido[3,2-f][1,4]oxazepine in 1-butanol
and syringe B was loaded with a 0.04 M solution of corresponding hydrazide in 1-butanol
Chemicals used for the synthesis; glycerin, p- chlorobenzaldehyde, p-toluene sulfonic acid, triethylamine, 2,2'-azobisisobutyronitrile (AIBN), anhydrous MgSO4, hydroquinone, 1,4-dioxane, and chemicals used for IGC studies; alcohols (ethanol, 1-propanol, 1-butanol
) and hydrocarbons (n-hexane, n-heptane, n-octane and n- nonane) were purchased from Merc Chemical Co.
Sodium dodecyl sulfate (SDS) and 1-butanol
were obtained from Vetec Quimica Fina (Rio de Janeiro, Rio de Janeiro State, Brazil).
Solvents (such as methanol, ethanol and 1-butanol
) have been used in micro emulsion technique.
Analytical grade methanol (MeOH), anhydrous ethanol (EtOH), 1-propanol (PrOH), 1-butanol
(BuOH) and chloroform (CH[Cl.sub.3]) were used without further purification, either pure or in alcohol:CH[Cl.sub.3] mixtures (10:90, 75:25, 50:50, 25:75).
The polysaccharide was deprotinated by adding 2 volumes of Sevag's reagent (chloroform: 1-butanol
= v/v = 4:1) .
Different aromatic isocyanates (2,4-TDI, 2,6-TDI, 2,4-MDl, 4,4-MDI) were considered to react with 1-butanol
, 2-butanol, and tert-butanol; and so, to calculate the reaction enthalpies.