Analysis organic

Organic compounds are found in all smokeless powders and are used as fuel, as deterrents to control burn rate, and as ingredients to control consistency. A 

Basic component Complex molecule Contexts Applications 

Lipid (fatty acids, Fat Vessel residues, soils Diet, activity areas 

Amino acid Protein Soils, tools Activity areas 

Nucleic acid DNA, RNA Animal and plant Identity of materials 

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Noth. The above method can be successfully applied only to dilute solutions of formaldehyde which are free in particular from other alfphatic aldehydes, since the latter, if present, would undergo a similar oxidation. Formaldehyde, if mixed with other aldehydes, should be estimated by quantitative addition of potassium cyanide for details, see advanced text-books of quantitative organic analysis. 

The comparatively wide prevalence of micro-methods of quantitative organic analysis, applied more particularly to the estimation of the constituent elements in an organic compound, may cause the advisability of including the macro-methods in Part IV to be questioned. Quite apart, however, from the fact that the micro-methods still find no place in many laboratories, we consider that thorough practice in the macro-methods of quantitative analysis to be not only an excellent introduction to the micro-methods themselves, but also a valuable training in exact manipulation generally. 

The number of quinones normally encountered in routine quahtative organic analysis is very limited the following notes will be found useful for their detection and characterisation. 

Dinitrobenzoyl chloride reacts readily with water and it should be kept in sealed tubes or under light petroleum. When required for qualitative organic analysis it is usually best prepared from 3 5 dinitrobenzoic acid immediately before use (see Section 111,27,2). 

In qualitative organic analysis, use is made of the fact that silver iodate is sparingly soluble in dilute nitric acid whereas silver periodate is very soluble. For water-insoluble compounds solutions in ethanol or in pure dioxan may be employed. 

Siggia, Quantitative Organic Analysis via Functional Croups, Second Edition, 1954 (J. Wiley Chapman and Hall). 

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