The flow of blood to the arteries of the body is impaired when aortic stenosis exists. Ultimately, this can lead to heart failure. Aortic stenosis occurs three times more commonly in men than women. Picture of heart and valves -- aortic valve stenosis.
Ammonium thiocyanate is colorless lustrous monoclinic flaky or columnar crystal with the chemical formula being NH4SCN and the molecular weight of 76.12. At 92 â, it is rhombohedral crystal with the melting point of 147 â (decompose at 170 â), the relative density of 1.3057 and the refractive index of 1.685.
Ammonium phosphate is the salt of ammonium and phosphate. It is a highly unstable compound with the formula (NH 4) 3 PO 4.Because of its instability, it is an elusive and of no commercial value (except for scientific research).In addition to (NH 4) 3 PO 4, a related double salt (NH 4) 3 PO 4 .(NH 4) 2 HPO 4 is also recognized. It too is unstable.n contrast to the fragile nature of the triammonium salts, diammonium phosphate (H(NH 4) 2 PO 4) is a valuable material, mainly used as a fertilizer.