DEP = diethylphthalate

BMEP bis(2-methoxyethyl) phthalate, DCHP dicyclohexylphthalate, DEP diethylphthalate, DHP di(n-hexyl) phthalate, DIH P di(isoheptyl)phthalate, DM P dimethyl phthalate, DM PP dimethylpropyl phthalate, DOP di(n-octyl) phthalate. 

Fractal dimension was applied to characterize the internal structure of porous films made from ethylcel-lulose (EC) and diethylphthalate (DEP). Drug permeation was found to correlate with boundary fractal dimension on a semilog plot (Fig. 12). " However, Dl simply describes the ruggedness of a line and does not represent the porosity. More work is required for fractal dimensions in this case. 

The method is also applicable to soil, provided that a suitable procedure for the extraction of phthalates from soil can be derived. The scope of ISO 18856 contains the following phthalates dimethylphthalate (DMP), diethylphthalate (DEP), dipropylphthalate (DPP), di-(2-methyl-propyl)phthalate (DiBP), dibutyl-phthalate (DBP), butylbenzylphthalate (BBzP), dicyclohexylphthalate (DCHP), di-(2-ethylhexyl)phthalate (DEHP), dioctylphthalate (DOP), didecylphthalate (DDcP) and diundecylphthalate (DUP) a further 38 phthalates are mentioned in an annex. 

Some of the plasticizers used in conjunction with PEO are listed in Table 1. These include poly THF [80] cyclic carbonates such as ethylene carbonate (EC) [81-87], propylene carbonate (PC) [81-87],modified propylene carbonate containing an oligo etheroxy side chain (MC-3) [88-89], poly ethylene glycol (PEG) [90], glycols [81],glycol ethers [81],di octyl sebacate (DOS) [82],diethylphthalate (DEP) [82], and also crown ethers such as 12-crown-4-ether [91-92]. While many of these are simple organic compounds which are available commercially, some such as MC-3 were synthesized especially for their use as additives in polymer electrolytes, as shown in Scheme 1. 

Many review works has been published on osmotic delivery over the past 40 years, including some recent ones. In addition, a research group at the University of Mumbai " described a system in which a cellulose diacetate membrane is used for osmotic delivery of pseudoephedrine, with plasticizers used as film dopants in an attempt to create the pores. Good results were obtained with diethylphthalate (DEP), in some cases containing PEG (both of which have significant miscibility... 

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