direct fast red 3b basic information product name: direct fast red 3b synonyms: calcomine scarlet 3b;erie scarlet 3b;direct fast red 3b;direct scarlet 3b;direct red 39;diphenyl red 3bs;pontamine scarlet 3b;1,3-naphthalenedisulfonicacid,8-((4’-((4-ethoxyphenyl)azo)-3,3’-dimethyl(1,1’ cas: 6358-29-8 mf: c32h26n4na2o8s2 mw: 704.68 einecs: 228-766-3 product categories: mol file: 6358-29-8.mol direct fast red 3b chemical properties colour index 23630 safety information rtecs qj6476000 msds information direct fast red 3b usage and synthesis general description dark red powder. air & water reactions azo dyes can be explosive when suspended in air at specific concentrations. insoluble in water. reactivity profile direct fast red 3b is an azo compound. azo, diazo, azido compounds can detonate. this applies in particular to organic azides that have been sensitized by the addition of metal salts or strong acids. toxic gases are formed by mixing materials of this class with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. flammable gases are formed by mixing materials in this group with alkali metals. explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides. fire hazard flash point data for direct fast red 3b are not available. direct fast red 3b is probably combustible.

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