Forming pastille

Sohd form maleic anhydride is produced from molten maleic anhydride as briquettes or pastilles weighing 0.5 to 20 g. Flaked maleic anhydride is used in some areas of the world but is not generally accepted in the United States because of the high dust content. Briquettes or pastilles are packed in... 

Pitch. Pitch used to be stored in solid form at the tar distillery in open bays, from which it was removed by small explosive charges. Loading of the lump pitch by mechanical shovel created a dust ha2ard both at the tar installation and at the customer s, where the lumps had to be ground before use. In the 1990s, pitch is stored in tanks heated by superheated steam or circulating hot-oil coils and transported in fiquid form in insulated rad, road tankers, or ships. When transport as a hot fiquid is not feasible, not acceptable by the customer, or for small amounts, the pitch is converted into a dust-free particulate form, ie, short rods termed pencils, pastilles, or flakes. 

Eisen-oxydverbindung, /. ferric compound, iron(III) compound, -pastille, /. (Pharm.) reduced iron lozenge, -pecherz, n. limonite pitticite tripUte. -phosphor, n. iron phosphide. -probe, /. iron test iron sample, -pulver, n. iron powder, -quarz, m. ferriferous quartz, -rahm, m. a porous form of hematite. 

Workplace safety has been taken care of by the reworking of some classes of additives into more environmentally acceptable forms. Some trends are the increased use of additive concentrates or masterbatches and the replacement of powder versions by uniform pellets or pastilles which release less dust and flow more easily. Moreover, the current move to multicomponent formulations of stabilisers and processing aids in a low- or nondusting product also takes away the risk of operator error, aids quality control, ISO protocols and good housekeeping. An additional benefit is more homogeneous incorporation of the additives in the polymeric matrix. 

Cinnamon.—The bark of the lawns cinnamomum, and that from Ceylon is the best. It is very thin, brownish-red, and has an agreeable aromatic flavor.. The oassia, winch it resembles closely, is thicker, rougher on the surface, and comes in larger rolls or quills. The first is often sophisticated with the latter, and sometimes even a part of its volatile oil is abstracted by infusion in alcohol. This latter fraud is detected by the feeble smell and teste of the cinnamon. The finely-groimd hark is used for pastilles, sachets, an tooth-powders. Its aroma may also be extracted in the form of tincture, by alcohol. By distillation, it yields an essentia] oil of powerful odor, which is largely used in combination with oil of cloves and other strong essences. (... 

No. 142 is a composition for ordinary pastilles. Tessier says that it produces numerous sparks forming a feeble aureole. As this composition is not lively, and as it is not able to make the... 

Nos. 126, 128, and 129 are also for ordinary pastilles. No. 126 has not much force it is incapable alone of making a pastille turn with the necessary rapidity. Hence care is taken in charging it to introduce only a small quantity into the tube. It burns with a white flame forming a crown, more or less lacy-edged, from which rays and sparks are thrown out. 38... 

The two compositions, Nos. 142 and 126, evidently burn while the pastille is turning from the initial twirl given it by the hand. When the fire reaches the next composition, No. 128, the pastille accelerates by its own power. This gives reddish rays, very straight and very numerous, and No. 129 gives a white flame around the disc, and numerous and persistent sparks which fall down forming a sort of cascade on each side of the pastille. 39... 

Pastilles A form of lozenge, particularly those which are chocolate flavored (see Lozenges)-, also, combustible cones of aromatic drugs used for fumigation (see Cones). The term came into English usage around 1650 from the French pastille, which was derived from the Latin pastillus, meaning little loaf. ... 

Concentrated aqueous solutions are used to prepare pastilles since on drying they form solid rubbery or glasslike masses depending upon the concentration used. Foreign policy changes and politically unstable conditions in Sudan, which is the principal supplier of acacia, has created a need to find a suitable replacement. Poloxamer 188 (12-15% w/w) can be used to make an oil/water emulsion with similar rheological characteristics to acacia. Other natural by-products of foods can also be used. Acacia is also used in the food industry as an emulsifier, stabilizer, and thickener. A specification for acacia is contained in the Food Chemicals Codex (FCC). 

Polydextrose acts as a bulking agent in the formulation of sugar-free confectionery-type dosage forms. In conjunction with isomalt, lactitol, or maltitol, polydextrose can be used in the manufacture of sugar-free hard-hoiled candies and acacia lozenges or pastilles. 

Available forms Beads, powder, and pastilles. Use In manufacture of plastics. 

Several products are available in the form of gels, paints, pastilles and mouthwashes to reduce pain and discomfort (see Chapter 26 for an explanation of the rationale for their use). 

Although slip lids are also used on rectangular drawn containers, the geometry of the two components does not allow as tight a fit as is possible with round lids. Hence moisture sensitive tablets or pastilles are better packed in round containers. Alternatively a slip lid of the type commonly used on both round and rectangular tobacco containers can be used. This is usually referred to as a vacuum sealed lid but is more accurately described as a differential pressure lid. The lid itself incorporates a flowed-in PVC or EVA gasket to form a closure with the upper rim of the base. 

A second advantage of suspension processes is that remelting the solid phase in order to clear the apparatus as necessary in progressive freezing processes is not necessary here. This saves energy and also the potential process step of resolidification in pastilles or other forms as requested by customers. 

MBOCA is a man-made chemical and has not been found in nature (lARC 1974). It is produced commercially by reacting formaldehyde with 0-chloraniline (HSDB 1991 lARC 1974). Pure MBOCA is a colorless crystalline solid (Smith and Woodward 1983). The technical grade of MBOCA that is available in the United States comes mainly from Japan in the form of tan/yellow fused prills or pastilles. The diamine purity is 99.8%, typically with 0.2% free o-chloroaniline (monomer). Isomers are produced as side reactions such as trimers and tetrameres-diamines with three-and four-ring structures joined by methylene groups. Isomers constitute up to 8-10% of MBOCA. The dimer makes up to 90-92% of the MBOCA produced today for coatings and cast polyurethanes. There is no commercial use for pure dimer MBOCA other than for laboratory work. 

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