Nigrosines

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Nigrosines

a class of black dyes consisting of Nigrosine Spirit Soluble, Nigrosine Water Soluble, and Nigrosine Base B (oil-soluble). Nigrosine Spirit Soluble is prepared by heating a mixture of aniline, nitrobenzene, and cast-iron chips. It is a mixture of quinonimine dyes and is used to color plastics and varnishes. Nigrosine Water Soluble is prepared by sulfonation of Nigrosine Spirit Soluble and is mainly used in dyeing leather goods. Boiling Nigrosine Spirit Soluble with caustic soda yields Nigrosine Base B, which is used in the preparation of shoe polish and as the ink in typewriter ribbons.

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No references found			The various brands of spirit-soluble Nigrosines which are sold are similar to Shultz's No. Information About Acid Dyes and Their Colors by Lynette Tyson / Hobbies community			night visual range Night Watch night watchman night wind night-blooming cereus night-sky camera night-sky light night-sky luminescence night-vision binoculars night-vision telescope nightglow nighthawk nightingale Nightingale, Florence nightjar Nightmare File System nightshade nightshade family nighttime visual range Nigmati, Galimdzhan Nigmati, Rashit nigre nigrescent nigrite nigrosine Nigrosines Nigrospora Rot Nigula Preserve NIH NIHCL nihil obstat Nihilism Nihilism, Legal Nihongi NII Niiazbekov, Sabir Niiazbekov, Sabir Bilialovich Niiazi Niigata Niihama Niihau Niitsu Niiza Nijhoff, Martinus Nijinska, Bronislava Nijinsky Nijinsky, Vaslav Nijmegen Nijmegen, Peace of 1678–79 Nijmegen, Treaties Nikšic			nigrescence nigrescences nigrescences nigrescent nigrescent nigricans Nigrification nigrify Nigrine Nigrine nigrite Nigritic nigrities nigrities linguae Nigritude nigroid bodies Nigromancie Nigromancien nigropallidal encephalomalacia nigropallidal encephalomalacia Nigroporus Nigroporus vinosus Nigrosin nigrosin stain nigrosin stain nigrosin stain nigrosin stain nigrosine nigrosine nigrosine Nigrosines Nigrospora Rot nigrostriatal Nigrostriatal pathway nigrostriatal tract nigrostriatal tract nigrostriatal tract nigrostriatal tract nigrostriatal tract Nigs Nigs NIGTA NIGTC NIGU Nigua Nigua Niguel Hills Middle School Nigula Preserve NIGV NIGY NIGYSOB NIGYYSOB NIGZ NIH NIH NIH NIH NIH Business and Research Support System NIH catheter NIH catheter NIH catheter

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