Yellowing rosin

Gelb-guss, m. yellow brass, -harz, n. yellow resin yellow rosin, -heit, /. yellowness, -holz, n. fustic, specif, old fustic 3 dlowwood. 

Ethoxylation of alkyl amine ethoxylates is an economical route to obtain the variety of properties required by numerous and sometimes smaH-volume industrial uses of cationic surfactants. Commercial amine ethoxylates shown in Tables 27 and 28 are derived from linear alkyl amines, ahphatic /-alkyl amines, and rosin (dehydroabietyl) amines. Despite the variety of chemical stmctures, the amine ethoxylates tend to have similar properties. In general, they are yellow or amber Hquids or yellowish low melting soHds. Specific gravity at room temperature ranges from 0.9 to 1.15, and they are soluble in acidic media. Higher ethoxylation promotes solubiUty in neutral and alkaline media. The lower ethoxylates form insoluble salts with fatty acids and other anionic surfactants. Salts of higher ethoxylates are soluble, however. Oil solubiUty decreases with increasing ethylene oxide content but many ethoxylates with a fairly even hydrophilic—hydrophobic balance show appreciable oil solubiUty and are used as solutes in the oil phase. 

Harz-saure, /. resin acid, resinic acid, -aeife, /. resin soap rosin soap, -sikkativ, n. rosin drier, -spiritus, m. rosin spirit, -spur, /. trace of resin or rosin, -stippe, /. (Paper) rosin speck, rosin spot, -stoff, m. resinous substance, -talgseife, /. tallow-rosin soap, yellow household soap, -tanne, /. pitch fir. -teer, m. resinous tar. -wasser, n. resin water, -zahl,/. resin number rosin number, -zement, m. resinous cement, haschen, v.t. tk i. eatch, seize, haschieren, hatch hash, mince. 

Rosin is an organic flux that has long been used for soldering. It is a yellow, transparent, and relatively hard resin secreted from wounds in the trunks of coniferous trees. Rosin is insoluble in water, and its exact composition and structure are as yet unknown. 

Adsorption of e.g. rosin (abietic acid) at the pigment surface may - depending on the concentration of the rosin - reduce or accelerate the crystal growth. The presence of an excess amount of rosin during the production of diarylide yellow pigments of the Pigment Yellow 13 type affords an additional crystal modification, which can be identified by X-ray diffraction spectroscopy [4],... 

Colophony—Common Rosin.—This is the residue remaining on the distillation of common turpentine it retains more or less water, and is known as white and yellow resin, being in this state translucent, and often slightly viscid. When deprived of water by fusion, it is termed brown or black resin, colophony, rosin, or fiddler s rosin. 

Tho formation of yellow soap from rosin depends on the direct combination of the resin acids with soda. No glycerin is eliminated, there being np proper saponification. The compounds formed, however, by the union of soda with rosin are not separable from their... 

Rosin is graded and sold on the basis of color, the color grades ranging from pale yellow to dark red (almost black). The color is due almost entirely to iron contamination and oxidation products. Fresh oleoresin, as it exudes from the tree, will yield a rosin that is nearly colorless. Color-bodies are removed by... 

By far the greatest market for this pigment, especially the rosinated grade, is in the printing ink market, where red lake C is known as a warm red, due to its distinct yellow shade. Within the plastics industry red lake C offers an economical azo red that finds use in LDPE and polyurethane where the end use allows such a pigment with relatively poor durability properties to be used as the system colorant. 

Inflammable Compounds. H. Schwart recommends the following mixtures as giving excellent results I. One part of pulverized sulphur is melted in warm water with 4 of yellow phosphorus Most of the water is then poured off and the fluid mixture rubbed intimately with 4 parts of dextrine gum. Now compound 45 parts of minium with H equivalent of nitric acid, dry the mixture, pulverize it, and add it gradually to the phosphorus mixture. The matches are saturated with solution of pine rosin in alcohol, and dried at a moderate heat. 

Rosin is sometimes used to refer to certain resins, especially the natural exudates of fir and pine trees, and in such designations as rosin-tree for the South African shrub Cineraria resinifera. Strictly speaking, rosin is the residue after distillation of the volatile components of the whole resin, again, especially of fir and pine resins. The term is synonymous to colophony. In modern practice, colophony is obtained by vacuum distillation of the volatile constituents of resin in the absence of air. The product retains the typically yellow color of the original resin. In earlier times, the resin was heated in open vessels and the product was brown or black and partially pyrolyzed it was, in fact, pitch. Because of this ambiguity, it is best to avoid the word rosin altogether. 

Urticaria due to intake of tartrazine is more widely accepted as an adverse effect and has been demonstrated in a number of studies. During this reaction substances such as histamine are released into the blood which cause the symptoms of red weals on the skin and itching. A number of other food colours and other types of food additives can also cause urticaria and there may be cross-reactivity between colours such as eryth-rosine and sunset yellow. A challenge of patients whose urticaria had improved on a colour-free diet with 0.15 mg of tartrazine, resulted in three out of thirteen developing urticaria within three hours of exposure."... 

SYNS BALS 3A BANDIS GlOO RONDIS R EM 3 HIGHROSIN HONGKONG ROSIN W KE 709 ROSIN ROSIN WW SHIRAGIKU ROSIN YELLOW RESIN... 

After some time the system is evacuated and tested with a manometer. The connections of rubber tubing to the glass tubing of the apparatus are always a source of leaks. When a pressure below 20 mm is desired, the joints should be painted with a molten mixture of equal parts of yellow beeswax and rosin, or any other suitable non-cracking cement. 

Colorless to yellow, almost odorless, thick liquid, djj 1,040. bp 360-365 with decompn. ng1 1.530, Plash pt 180-218°. Insol in water miscible with usual Organic solvents, also with aliphatic hydrocarbons. Dissolves ester gums, rosin, many synthetic resins as wet] as ethyl cellulose, rubber, etc. 

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