Leaflet

CioHi O. White leaflets, with a strong smell and sweet taste, m.p. 22 C, b.p. 235 C. The chief constituent of anise and fennel oils and other essential oils, from which it is manufactured. It can also be prepared from anisole (meihoxybenzene). It is widely used for flavouring pharmaceuticals and dentifrices, and in perfumery. 

C7H7NO2. Colourless leaflets, m.p. 145" C. Jt is both acidic and basic. 

Klibenzanthracene, C22H 4. Crystallizes in silvery leaflets, m.p. 262 C. A polycyclic aromatic carcinogen obtained from coal tar. The 7,8 derivative, m.p. 196, is also known. 

HOOC-[CHa]8-COOH, CioH.aO. Colourless leaflets m.p. 134°C. Manufactured by heating castor oil with alkalis or by distillation of oleic acid. Forms an anhydride, m.p. 78 C. The esters of sebacic acid are used as plasticizers, especially for vinyl resins. 

The data can be retrieved easier, since no pile of films is laying on the table of the inspector. With each CD-ROM diskette a leaflet with relevant information for traceability of data is provided. 

Transfer 30 g. of the hydrochloride to a 500 ml. separatory funnel, add 100 ml. of water and shake until a thin paste of uniform consistency is obtained add 10 per cent, aqueous sodium hydroxide solution in the cold with shaking until the whole mass has become bright green (the colour of the free base) and the mixture has an alkaUne reaction. Extract the free base by shaking with two 60 ml. portions of benzene (1). Dry the combined benzene extracts with a Uttle anhydrous potassium carbonate, and filter into a distiUing flask fitted with a water condenser. Distil off about half of the benzene, and pour the residual hot benzene solution into a beaker. Upon cooUng, the p-nitrosodimethylaniUne erystallises in deep green leaflets. Filter these off and dry them in the air. The yield of p-nitrosodimethylaniUne, m.p. 85°, from the hydrochloride is almost quantitative. 

The sodium salt of methyl red may be prepared by dissolving the crude product in an equal weight of 35 per cent, sodium hydroxide which has been diluted to 350 ml., hitoring, and evaporating under diminished pressure (Fig. II, 37, I). The resulting sodium salt forms orange leaflets. This water-soluble product is very convenient for use as an indicator. Incidentally, the toluene extraction is avoided. 

NaS03p [14483-63-7] shiny leaflets, hygroscopic s s ethanol, acetone i ether... 

Formamide, BASF Technical Leaflet 1983 BASF data sheet, BASF AG, Operating Division Zwischenpiodukte, Ludwigshafen, Germany, 1989. 

Benzenetetrol. 1,2,4,5-Tetraliydroxybenzene (71) forms leaflets from glacial acetic acid (mp 215—220°C). It is easily soluble ia water, etbanol, and dietbyl etber but is not quite as soluble ia concentrated bydrocbloric acid and glacial acetic acid. Ferric cbloride produces a precipitate of... 

A (4-Hydroxyphenyl)glycine. This derivative (23) forms aggregate spheres or shiny leaflets from water. It turns brown at 200°C, begins to melt at 220°C, and melts completely with decomposition at 245 —247°C. The compound is soluble in alkaU and mineral acid and sparingly soluble in water, glacial acetic acid, ethyl acetate, ethanol, diethyl ether, acetone, chloroform, and benzene. 

High Peformance Natural Polymers, Leaflet by Asiatic Development Berhad, Wisma Genting, J alan Sultan Ismail, Kuala Lumpui, 1993. 

Coumaria is usually sold in the form of colorless shiny leaflets or rhombic crystals. Its ir (7), uv (8), Raman (9), and nmr spectra (10) are known. Physical constants appear ia Table 1. Tables 2 and 3 give the solubiUty of coumaria ia various water mixtures and solvents. 

There are instances in which one manufacturer may designate a bluish red dye as Red 4B and another manufacturer uses Violet 2R for the same dye. To resolve such a problem the manufacturers pattern leaflets should be consulted. These show actual dyed pieces of cloth so the colors of the dyes in question can be compared directly in the actual appHcation. Alternatively, colors can be specified in terms of color space coordinates. The Cielab system is becoming the standard in this system the color of a dye is defined by three numbers, the L, a, and b coordinates (see Color). 

Liquid crystals stabilize in several ways. The lamellar stmcture leads to a strong reduction of the van der Waals forces during the coalescence step. The mathematical treatment of this problem is fairly complex (28). A diagram of the van der Waals potential (Fig. 15) illustrates the phenomenon (29). Without the Hquid crystalline phase, coalescence takes place over a thin Hquid film in a distance range, where the slope of the van der Waals potential is steep, ie, there is a large van der Waals force. With the Hquid crystal present, coalescence takes place over a thick film and the slope of the van der Waals potential is small. In addition, the Hquid crystal is highly viscous, and two droplets separated by a viscous film of Hquid crystal with only a small compressive force exhibit stabiHty against coalescence. Finally, the network of Hquid crystalline leaflets (30) hinders the free mobiHty of the emulsion droplets. 

Recrystd from dil EtOH hygroscopic leaflets. Best to crystallise from absolute Et0H-Et20 (1 1) and then recryst from absolute EtOH. The m recorded range from 144 to 174 . The free base has b 58°/15mm with... 

Naphthoquinone [524-42-5] M 158.2, m 140-142 (dec). Crystd from ether (red needles) or benzene (orange leaflets). 

PentafIuorobenzyl)hydroxylamine hydrochloride (PFBHA) [57981-02-9] M 249.6, m 215 , 215-216 , pKesi 1-1. Recrystd from EtOH to form colourless leaflets. Drying the compound at high vacuum and elevated temperature will result in losses by sublimation. [Youngdale J Pharm Sci 65 625 7976 Wehner and Handke J Chromatog 177 237 7979 Nambara et al. give incorrect m as 115-116°i Chromatogr 114 81 1975.]... 

Methylphenazinium methyl sulfate [299-11-6] M 306.3, m 155-157 (198°dec by rapid heating). It forms yellow prisms from EtOH (charcoal). Solubility in H2O at 20° is 10%. In the presence of aqueous KI it forms a semiquinone which crystallises as blue leaflets from EtOH. [Wieland and Roseen Chem Ber 48 1117 1913, Voriskova Collect Czech Chem Commun 12 607 1947, Biilow Chem Ber 57 1431 1924.]... 

This can be recrystallized from dimethylsulfoxide to give well-defined leaflets. 

After the volume is reduced, a small crystal of iodine is added whereupon large yellow leaflets of product begin to separate. 

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