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.
What is Antimony Used for Today. Modern uses of Antimony also take advantage of its hardening effect in alloys. It is often alloyed with lead and with tin, and is widely employed for lead-acid battery plates, bullets and cable sheathing. You can also find tin antimony solder.