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dyestuffs

dyestuffs Sentence Examples

  • By the entrance of amino or hydroxyl groups into the molecule dyestuffs are formed.

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  • OH N (CH 3) 2 (i 3), are extensively employed in the manufacture of the important dyestuffs known as the rhodamines.

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  • All four mono-hydroxyxanthones are known, and are prepared by heating salicylic acid with either resorcin, pyrocatechin or hydroquinone; they are yellow crystalline solids, which act as dyestuffs.

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  • Benzo-orthoxazines, -metoxazines and -paroxazines are known: dibenzoparoxazine or phenoxazine is the parent of a valuable series of dyestuffs; dibenzoparathiazine or thiodiphenylamine is important from the same aspect.

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  • Benzo-ortho-diazines exist in two structural forms, cinnolin and phthalazine; benzo-meta-diazines are known as quinazolines; benzo-para-diazines are termed quinoxalines; the dibenzo-compounds are named phenazines, this last group including many valuable dyestuffs - indulines, safranines, &c. In addition to the types of compounds enumerated above we may also notice purin, tropine and the terpenes.

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  • At the same time, however, all dyestuffs are coloured substances.

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  • Derivatives of this group are important as substantive cotton dyestuffs.

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  • The azo compounds are intensely coloured, but are not capable of being used as dyestuffs unless they contain salt-forming, acid or basic groups.

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  • Brandy, cigars and dyestuffs are among the manufactures of the place.

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  • The trioxyanthraquinones - purpurin, anthrapurpurin, anthragallol and flavopurpurin - are also very valuable dyestuffs.

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  • TRIPHENYLMETHANE, (C 6 H 5) 3 CH, a hydrocarbon, important as being the parent substance of several series of exceedingly valuable dyestuffs, e.g.

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  • It combines readily with the meta-aminophenols to form rhodamines, which are valuable dyestuffs.

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  • Among such dyestuffs are chrysamine or flavophenine, obtained from salicylic acid and diazotized benzidine, and congo red obtained from sodium naphthionate and diazotized benzidine.

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  • The industries of the place include the manufacture of porcelain, chocolate and dyestuffs, wool-spinning and bell-founding.

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  • The great commercial value of aniline is due to the readiness with which it yields, directly or indirectly, valuable dyestuffs.

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  • Perkin was the first of a series of dyestuffs which are now to be numbered by hundreds.

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  • In addition to dyestuffs, it is a starting-product for the manufacture of many drugs, such as antipyrine, antifebrin, &c. Aniline is manufactured by reducing nitrobenzene with iron and hydrochloric acid and steam-distilling the product.

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  • Coal tar dyestuffs Between 1820 and 1850 a great deal of research went on into the chemistry of coal tar dyestuffs Between 1820 and 1850 a great deal of research went on into the chemistry of coal tar.

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  • Largely concerned with dyeing and finishing of 300 km of fabric per week, using reactive dyestuffs and discharging direct to the river.

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  • Uses medicinal, herbal dyestuffs, aromatic and culinary.

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  • Many of the fibers are hand-dyed using plants grown locally and natural dyestuffs from around the world.

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  • Widely used for food coloring, medicinal, culinary, herbal dyestuffs and cosmetic uses.

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  • Two dye ranges using disperse, vat and reactive dyestuffs process a further 150 to 200km of fabric per week.

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  • They also worked on processes to produce other artificial dyestuffs but the board of the company was not keen to diversify at that stage.

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  • dyestuffs industry.

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  • Coal tar dyestuffs Between 1820 and 1850 a great deal of research went on into the chemistry of coal tar.

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  • PHENAZINE (Azophenylene), C 12 H 8 N 2, in organic chemistry, the parent substance of many dyestuffs, e.g.

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  • By the entrance of amino or hydroxyl groups into the molecule dyestuffs are formed.

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  • OH N (CH 3) 2 (i 3), are extensively employed in the manufacture of the important dyestuffs known as the rhodamines.

    0
    0
  • All four mono-hydroxyxanthones are known, and are prepared by heating salicylic acid with either resorcin, pyrocatechin or hydroquinone; they are yellow crystalline solids, which act as dyestuffs.

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    0
  • Benzo-orthoxazines, -metoxazines and -paroxazines are known: dibenzoparoxazine or phenoxazine is the parent of a valuable series of dyestuffs; dibenzoparathiazine or thiodiphenylamine is important from the same aspect.

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    0
  • Benzo-ortho-diazines exist in two structural forms, cinnolin and phthalazine; benzo-meta-diazines are known as quinazolines; benzo-para-diazines are termed quinoxalines; the dibenzo-compounds are named phenazines, this last group including many valuable dyestuffs - indulines, safranines, &c. In addition to the types of compounds enumerated above we may also notice purin, tropine and the terpenes.

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  • At the same time, however, all dyestuffs are coloured substances.

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  • Derivatives of this group are important as substantive cotton dyestuffs.

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  • The azo compounds are intensely coloured, but are not capable of being used as dyestuffs unless they contain salt-forming, acid or basic groups (see Dyeing).

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  • Brandy, cigars and dyestuffs are among the manufactures of the place.

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  • The trioxyanthraquinones - purpurin, anthrapurpurin, anthragallol and flavopurpurin - are also very valuable dyestuffs.

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    0
  • TRIPHENYLMETHANE, (C 6 H 5) 3 CH, a hydrocarbon, important as being the parent substance of several series of exceedingly valuable dyestuffs, e.g.

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  • It combines readily with the meta-aminophenols to form rhodamines, which are valuable dyestuffs.

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  • Among such dyestuffs are chrysamine or flavophenine, obtained from salicylic acid and diazotized benzidine, and congo red obtained from sodium naphthionate and diazotized benzidine.

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    0
  • The industries of the place include the manufacture of porcelain, chocolate and dyestuffs, wool-spinning and bell-founding.

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  • The great commercial value of aniline is due to the readiness with which it yields, directly or indirectly, valuable dyestuffs.

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    0
  • Perkin was the first of a series of dyestuffs which are now to be numbered by hundreds.

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    0
  • In addition to dyestuffs, it is a starting-product for the manufacture of many drugs, such as antipyrine, antifebrin, &c. Aniline is manufactured by reducing nitrobenzene with iron and hydrochloric acid and steam-distilling the product.

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