. Biological stains; a handbook on the nature and uses of the dyes employed in the biological laboratory. Stains and staining (Microscopy); Stains and Staining; Dyes. Nitro and Azo Dyes 71 This dye is rarely used as a biological stain, but is called for by Schaffer for staining sections of bone, and by Unna in certain stain mixtures used in studying the phenomenon called by him chro- molysis. Fast yellow G or GG is employed by Wallart and Hou- ette (1934), together with hennatoxylin and acid fuchsin, in a trichrome staining technic. c5 OIL YELLOW II C. I. NO. 19 Synonyms: Butter yellow. Oil ye
. Biological stains; a handbook on the nature and uses of the dyes employed in the biological laboratory. Stains and staining (Microscopy); Stains and Staining; Dyes. Nitro and Azo Dyes 71 This dye is rarely used as a biological stain, but is called for by Schaffer for staining sections of bone, and by Unna in certain stain mixtures used in studying the phenomenon called by him chro- molysis. Fast yellow G or GG is employed by Wallart and Hou- ette (1934), together with hennatoxylin and acid fuchsin, in a trichrome staining technic. c5 OIL YELLOW II C. I. NO. 19 Synonyms: Butter yellow. Oil yellow D. Fast oil yellow B. C14H15N3; MoL Wt. Butter yellow is the most common designation for this dye in the biological literature. The name is unsatisfactory for two reasons; first, it sometimes falsely suggests some relationship to butter; second, it is ambiguous because C. I. No. 17 (amino-azo-toluene) is also called butter yellow. For these reasons the name given in the above heading is preferred; or one may definitely specify it by the chemical term, p-dimethyl-amino-azo-benzene. It has not been used, apparently, as a stain, but has been con- siderably studied as a carcinogenic substance, so much so that fear has been expressed in some quarters that the public might come to associate cancer with butter and that this food might be thereby discredited. c8 CHRYSOIDIN Y C. I. NO. lO Synonyms: Brown salt R. Dark brown salt R. N__N. C12H13N4CI; Mol. Wt. {A basic dye; absorption maximum about ^61) Solubility at 26°C: in water ; in alcohol This dye is a good substitute, in some procedures, for Bismarck brown. Like the latter, it is easily injured by heat, and boiling should be avoided in preparing solutions. Maheshwari and Wulff (1937) have employed it in the vital staining of pollen tubes; Lison (1938) for the vital staining of insects. Monn^ (1939) uses it to demonstrate the Golgi apparatus. Varco and Visscher (1941) in- clude it among a series of dy
Size: 1681px × 1487px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
