(n.) A name given to any one of several yellow or scarlet dyestuffs of artificial production and complex structure. In general they are diazo and sulphonic acid derivatives of benzene and naphthol.
Example Sentences:
(1) We describe an improved immunodiffusion stain using trichloroacetic acid to mordant dying by Crocein scarlet.
Dyestuff
Definition:
(n.) A material used for dyeing.
Example Sentences:
(1) The vast majority of incidents occurred during the manufacture of chemicals or dyestuffs, and two particular workplaces were responsible for 70% of the cases.
(2) Mycobacterial acid-fastness seems most readily explainable on the basis of a "lipids barrier principle" that in the first instance hinders penetration of the water-soluble dyestuff, and in the second, hinders penetration of the bleaching acid.
(3) With a given type of coordination, the nature of the central atom has a decisive influence on the catalytic activity of the dyestuff, whereas substitution on the organic skeleton has only a slight effect.
(4) We use the disazo dyestuff Solaminrot 4B produced by VEB Chemiekombinat Bitterfeld.
(5) The method described here is as satisfactory for the detection of some commercial dyes as the methods developed by ETAD (Ecological and Toxicological Association of the Dyestuffs Manufacturing Industry).
(6) The study consisted of a literature survey, survey of on-going research and our project on the frequency and nature of MPC in an occupational cohort of Japanese dyestuff workers followed from 1962 through 1983.
(7) The chemical composition and biological action of a new food dyestuff separated from the grain sorhum film were studied.
(8) Selective binding of toluidine blue to basophilic proteoglycans is the first stage of a staining method which proceeds to the formation of a heavy metal salt of the dyestuff.
(9) Starting from the colorimetric data of some particular microscopic dyestuff the subtractive color spaces of a number of typical histologic stains are calculated.
(10) From 1 kg of the grain sorhum 169--248 g of the film are retrieved; and from this it is possible to obtain from 17 to 40 g of a flavonoid dyestuff that consists of cyanadine, quercitrol and pelargonidine.
(11) The authors consider that the hypocoagulative effect of cationic dyestuffs on the blood was caused by the thrombocytopenia and by the lowering of the platelet aggregation activity.
(12) The morphological changes in the uterine lymphatics in aging nulliparous and multiparous mice, as shown by the application of dyestuffs (patient blue violet and Japan ink) are described, and their appearance corresponds to that described in earlier papiers by Fabian (1976, 1977, 1978).
(13) At the same time, it is possible to confirm the suspicion of premature hydrorrhoea gravidarum by instillation of dyestuff into the amniotic cavity.
(14) In addition, more or less unsuccessful trials were made on twelve dyestuffs, some of which were new syntheses designed to combine chelating capacity with nucleophilia.
(15) In 732 cases of occupational eczemas, "para"-substances, chromates, plastic materials and adhesives, technical oils and fats, turpentine oil, dyestuffs and disinfectants were the principal noxious substances.
(16) Solaminrot 4B (VEB Chemiekombinat Bitterfeld) was used as dyestuff which enhances the normal birefringency of collagen fibrous material in tissue sections.
(17) The physical properties of experimental visible light-activated resins containing dyestuff, which could be quickly discolored by irradiation was, evaluated by analyzing light absorbance characteristics and measuring micro Vickers hardness.
(18) The present article briefly reviews some of Werner's contributions to organic chemistry, especially his studies of oximes, hydroxamic and hydroximic acids, phenanthrenes, syntheses, oxonium salts, dyestuffs, and optical activity.
(19) After thin-layer chromatography on high-performance thin-layer chromatographic plates with two different solvent mixtures, zeranol, estradiol, estriol and estrone are analysed as azo dyestuffs.
(20) As a second part of the strategy, the paper addresses more general questions relating to the ultimate fate of dyestuffs when discharged in aqueous effluents and in particular considers their most likely environmental distribution, their potential for bioaccumulation, and their biodegradability.