Abstract: A nonflammable solvent composition, a method of cleaning a surface, and a method of coating a substrate with a material using the solvent composition are provided. The nonflammable solvent composition includes about 70 wt. % or more of trans-1,2-dichloroethylene (t-DCE) and about 0.1 to about 30 wt. % of one or more of hydrofluoroether (HFE) and n-propyl bromide. The method of cleaning a surface includes applying the solvent composition to the surface and spreading or rubbing the composition on the surface. The method of coating a substrate with a material includes dissolving one or more material in the solvent composition, applying the solvent composition containing the one or more material to a substrate, and evaporating the solvent composition from the substrate.

Abstract: A process for co-producing anhydrous hydrogen bromide and a purified bisulfate salt by (a) reacting a bromide salt with sulfuric acid to produce crude hydrogen bromide and crude bisulfate salt; (b) purifying the crude hydrogen bromide to produce anhydrous hydrogen bromide; and (c) removing bromide from the crude bisulfate salt to form a purified bisulfate salt. There are also provided improvements in the bisulfate purification and bromine removal, whereby bromine is removed from the system by a distillation process and the bromide is removed from the crude bisulfate via a spray drying process.

Abstract: A batch process for co-producing anhydrous hydrogen bromide and a purified bisulfate salt comprising: (a) charging a batch reactor with a bromide salt slurry, wherein the slurry is more than 50% by weight bromide salt; (b) reacting the slurry with sulfuric acid in a batch reaction wherein bromide salt is consumed to produce crude aqueous hydrogen bromide and crude bisulfate salt, the crude bisulfate salt containing bromine; (c) prior to or concurrently with step (b) adding hydrogen bromide to the reactor; (d) purifying the crude hydrogen bromide to produce anhydrous hydrogen bromide; and (e) removing bromine from the crude bisulfate salt to form a purified bisulfate salt.

Abstract: This invention relates to improved stabilizing compositions for n-propyl bromide. More particularly, the cleaning composition includes about 0.1 to 5% Butylene oxide, about 0.1 to 5.0% t-butanol, about 0.1 to 5% acetonitrile, about 0.1 to 5% nitromethane; and the remainder n-propyl bromide. These mixtures are useful as cleaning solvents for the electronic, aerospace, and general manufacturing industries, especially in the area of vapor degreasing.

Abstract: The flag comprises a plurality of telescopic members. A knob member is connected to a tip of an inner end telescopic member and the knob member has a cross-section substantially equal to an outer base member. The knob is fastened to the base member when the flag is closed. A rod is pivotally connected to a base of the end member for radial movement away and toward the end member, and is connected to a side of a signalling sheet which is connected on its other side to the end member. The rod is biased away from the end member as the end member is extended from a remainder of the telescopic members and the rod returns to the end member as the end member is retracted into the remainder of the telescopic members. The rod holds at least part of the sheet taut when biassed away from the end member. The sheet is kept taut and visible when the telescopic members are extended, and the flag can be used to increase personal visibility, especially for small children crossing streets.