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Strontium chloride is a precursor to other compounds of strontium, such as yellow strontium chromate, strontium carbonate, and strontium sulfate. Exposure of aqueous solutions of strontium chloride to the sodium salt of the desired anion often leads to formation of the solid precipitate: [9] [2] SrCl 2 + Na 2 CrO 4 → SrCrO 4 + 2 NaCl
Others have only peroxide ligands: molybdate reacts in alkaline media with peroxide to form red peroxomolybdate Mo(O 2) 2− 4. [6] The reaction of hydrogen peroxide with aqueous titanium(IV) gives a brightly orange-red colored peroxy complex that is a useful test for titanium as well as hydrogen peroxide. [5]
Dialkyl peroxides, e.g., dicumyl peroxide, are synthesized by addition of hydrogen peroxide to alkenes or by O-alkylation of hydroperoxides. Diacyl peroxides are typically prepared by treating hydrogen peroxide with acid chlorides or acid anhydrides in the presence of base: [1] H 2 O 2 + 2 RCOCl → (RCO 2) 2 + 2 HCl H 2 O 2 + (RCO) 2 O → ...
Barium peroxide – unstable, spontaneously decomposes, compositions containing it should not be stored; Strontium peroxide; Lead tetroxide – versatile but toxic; Lead dioxide – used in friction-sensitive compositions, e.g. matches; Bismuth trioxide – used as a safe alternative to lead tetroxide in some compositions
A 2008 study indicated that sodium hypochlorite and organic chemicals (e.g., surfactants, fragrances) contained in several household cleaning products can react to generate chlorinated volatile organic compounds (VOCs). [12] These chlorinated compounds are emitted during cleaning applications, some of which are toxic and probable human carcinogens.
A closely related mixture, sometimes called "base piranha", is a 5:1:1 mixture of water, ammonia solution (NH 4 OH, or NH 3 (aq)), and 30% hydrogen peroxide. [2] [3] As hydrogen peroxide is less stable at high pH than under acidic conditions, NH 4 OH (pH c. 11.6) also accelerates its decomposition.
The use of a cotton swab or melamine foam (used in “eraser” cleaning sponges) as a support has also been suggested. [ 7 ] [ 8 ] [ 6 ] Sodium is a common component or contaminant in many samples, [ 2 ] and its spectrum tends to dominate many flame tests others. [ 5 ]
The * indicates that the compound will burn orange where x=0,2,3,5. Gold/Yellow Charcoal powder Yellow Sodium bicarbonate: NaHCO 3: Compatible with potassium chlorate. Less burning rate decrease than sodium carbonate. Incompatible with magnesium and aluminium, reacts evolving hydrogen gas. Yellow Sodium carbonate: Na 2 CO 3: Hygroscopic.