Benzylbutyl

Cm.OROCARBONSANDCm.OROHYDROCARBONS - BENZYL Cm ORIDE, BENZAL Cm ORIDE AND BENZOTRICm ORIDE] (Vol 6) Benzylbutyl phthalate [85-68-7]... 

Figure 12.10 Microcolumn SEC-LC analysis of an acrylonitrile-butadiene-styrene (ABS) teipolymer sample (a) SEC ti ace (b) EC ti ace. SEC conditions fused-silica column (30 cm X 250 mm i.d.) packed with PL-GEL (50 A pore size, 5 mm particle diameter) eluent, THE at a flow rate of 2.0 mL/min injection size, 200 nL UV detection at 254 nm x represents the polymer additive fraction (6 p-L) tr ansferred to EC system. EC conditions NovaPak CIS Column (15 cm X 4.6 mm i.d.) eluent, acetonitrile-water (60 40) to (95 5) in 15 min gradient flow rate of 1.5 mL/min detection at 214 nm. Peaks identification is follows 1, styrene-acrylonitrile 2, styrene 3, benzylbutyl phthalate 4, nonylphenol isomers 5, Vanox 2246 6, Topanol 7, unknown 8, Tinuvin 328 9, Irganox 1076 10, unknown. Reprinted with permission from Ref. (14).

Amounts of dimers and trimers were calculated by comparison with the area of 1,3-diphenylpropane and benzylbutyl phthalate, respectively. 

Synonyms Benzylbutyl alcohol Benzylpropyl carbinol Benzyl-n-propyl carbinol 1-Phenyl-2-pentanol DL-1-Phenylpentan-2-ol... 

Other markets for phthalates that have been under threat as a result of health seares include medical products (the target here has been DEHP), food packaging, and to a much lesser extent flooring, where di-isononyl phthalate (DINP), di-(2-ethylhexyl)phthalate (DEHP), benzylbutyl phthalate (BBP) and di-isoheptyl phthalate (DIHP) are used. Retailers have been under pressure from lobbying groups to refuse to sell PVC produets. 

Also a variant of liquid chromatography, SEC, has been applied for quantitative analysis, although to a much lesser extent. Jickells [86] has exploited the use of SEC-FTIK for quantitative additive analysis. SEC separated mixtures can also be used as a direct sample input into a mass spectrometer for mass analysis. Cortes et al. [87] have introduced quantitative polymer/additive analysis by multidimensional chromatography using on-line coupled microcolumn SEC as a preliminary separation. A comparative quantitative study of dissolution and dissolution/precipitation of PC/(2,4-di-r-butylphenol, nonylphenol isomers, Tinuvin 329, Irgafos 168) and ABS/(nonylphenol isomers, Tinuvin P, benzylbutyl phthalate, Vanox 2246, Tinuvin 328/770, Topanol CA and Acrawax) by means of /rSEC-GC/LC has shown the quantitative reliability of the dissolution procedure [87]. It also appears that the precipitation technique can yield low results for additives which exhibit solubility dependence. Polymer additives may routinely be analysed... 

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