Caprate

Many other cellulose esters have been prepared in the laboratory and some have reached pilot plant status. Of these the only one believed to be of current importance is cellulose caprate (decoate). According to the literature, degraded... 

Lead caprate. Prepare a standard stock solution by dissolving 0.1323 g of the solid in 2 mL of naphthenic acid with warming. Add 20 mL of 4-methylpentan-2-one (methyl isobutyl ketone), cool and then make up to the mark in a 100 mL graduated flask with more of the ketone. 

Prepare a blank solution by carrying through all the sequences of the separation procedures using a hydrochloric acid solution to which no alloy has been added, and then measure the absorption given by this blank solution, by a series of standard solutions containing from 1 to 10 /rg Pb mL 1 prepared by suitable dilution of the lead caprate stock solution (see Note), and finally of the extract prepared from the sample of alloy. Plot the calibration curve and determine the lead content of the alloy. 

Note. If lead caprate is not available, standard lead solutions can be prepared from aqueous solutions containing known weights of lead nitrate and following through the extraction procedure as detailed for the final extraction of lead into methyl isobutyl ketone for the alloy. It should also be noted that steps should be taken to avoid excessive inhalation of the vapour of the methyl isobutyl ketone, which can cause a headache. 

Anderberg, E. K. Lindmark, T. Artursson, P., Sodium caprate ehcits dilations in human intestinal tight junctions and enhances drug absorption by the paracellular route, Pharm. Res. 10, 857-864 (1993). 

Tomita, M., I. M. Hayash, and S. Awazu. Absorption-enhancing mechanism of EDTA, caprate, and decanoylcamitine in Caco-2 cells.,... 

Lennernas, H., Gjellan, K., Hallgren, R., Graffner, C., The influence of caprate on rectal absorption of phenoxymethyl-penicillin experience from an in-vivo perfusion in humans, J. Pharm. Pharmacol. 2002, 54, 499-508. 

Triethylene glycol dicaprylate/caprate, ester plasticiser. 

Ethyl butyl ketone, hi5 Ethyl caprate, el20 Ethyl caproate, el60 Ethyl caprylate, e231 Ethyl chloride, cl21... 

Methylbutyl iso valerate, ml 77 Methyl tert-butyl ketone, h70 Methyl caprate, m226 Methyl caproate, m270 Methyl caprylate, m349 Methyl carbazate, m275... 

Tomita, M., Sawada, T., Ogawa, T., Ouchi, H., Hayashi, M., and Awazu, S., Differences in the enhancing effects of sodium caprate on colonic and jejunal drug absorption, Pharm. Res., 9, 648,1992. 

Nakano, T. and Nakamura, H. (1986a). Viscoelasticity of esterified wood specimens I. Stress relaxation behaviour of caprated wood and the effect of ester content. Mokuzai Gakkaishi, 32(3), 176-183. 

Fatty acids (e.g., sodium caprate, sodium caprylate, sodium laurate, and sodium oleate)... 

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