Definition. Moyamoya is the Japanese word for âpuff of smokeâ, which is how the tangled blood vessels caused by the blocked arteries at the base of the brain appear on angiography.Moyamoya disease is a rare, progressive cerebrovascular disorder that generally affects children, although it can affect adults.oyamoya is the Japanese word for âpuff of smokeâ, which is how the tangled blood vessels caused by the blocked arteries at the base of the brain appear on angiography.
Antimony trisulfide is a gray solid. It reacts with hydrochloric acid to make hydrogen sulfide and an antimony(III) compound. It dissolves in potassium hydroxide. It burns in air to make antimony(III) oxide and sulfur dioxide. It is a reducing agent. Occurrence. Stibnite is the mineral form of antimony trisulfide. Preparation. Antimony trisulfide is made in the laboratory by reacting any antimony(III) compound with hydrogen sulfide. Uses. Antimony trisulfide is used in cosmetics; in this area it is called kohl. It is used in pyrotechnics to make a glitter effect.
However, there are companies in the United States that produce antimony as a by-product of smelting lead and other metals. Antimony isn't used alone because it breaks easily, but when mixed into alloys, it is used in lead storage batteries, solder, sheet and pipe metal, bearings, castings, and pewter.ntimony ores are mined and then mixed with other metals to form antimony alloys or combined with oxygen to form antimony oxide. Little antimony is currently mined in the United States. It is brought into this country from other countries for processing.