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Thianthrene is a sulfur-containing heterocyclic chemical compound. It is a derivative of the parent heterocycle called dithiin. It is notable for its ease of oxidation.
Sulfur Black 1 is imperfectly understood, and the material is probably heterogeneous. It is speculated to be a polymer consisting of thianthrene and phenothiazine subunits. The so-called sulfur bake dyes are produced from 1,4-diaminobenzene and diaminotoluene derivatives. These dyes are proposed to consist of polymers with benzothiazole ...
Ultramarine (PB29): a synthetic or naturally occurring sulfur containing silicate mineral - Na 8–10 Al 6 Si 6 O 24 S 2–4 (generalized formula) Persian blue: made by grinding up the mineral Lapis lazuli. The most important mineral component of lapis lazuli is lazurite (25% to 40%), a feldspathoid silicate mineral with the formula (Na,Ca) 8 ...
Sulfur yellow S Acid yellow 1 Food yellow 1 10316 nitro 846-70-8: Naphthylamin Brown F Acid brown 6 14625 azo 6419-10-5: Neutral red: Toluylene red Basic red 5 50040 eurhodin 553-24-2: New fuchsine: Magenta III Basic violet 2 42520 triarylmethane 3248-91-7: New methylene blue: NMB Basic blue 24 52030 thiazine 1934-16-3: Night blue Basic blue 15 ...
A "vital dye" or stain is a dye capable of penetrating living cells or tissues without causing immediate visible degenerative changes. [26] Such dyes are useful in medical and pathological fields in order to selectively color certain structures (such as cells) in order to distinguish them from surrounding tissue and thus make them more visible ...
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Between 1877 and 1887, 130 German patents for azo dyes were filed and 105 new dyes made it to market. [13] It also lead to a difference in how chemical companies interacted with consumers. German dye firms developed in-house marketing and distribution capabilities coordinated directly with their research and development departments. [ 3 ]
Reactive dyes have good fastness properties owing to the covalent bonding that occurs during dyeing. Reactive dyeing is the most important method for coloring cellulose fibers . Reactive dyes can also be applied on wool and nylon ; in the latter case they are applied under weakly acidic conditions.