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Ammonium thiocyanate is used in the manufacture of herbicides, thiourea, and transparent artificial resins; in matches; as a stabilizing agent in photography; in various rustproofing compositions; as an adjuvant in textile dyeing and printing; as a tracer in oil fields; in the separation of hafnium from zirconium (important for the production of hafnium-free zircalloy for use in nuclear fuel ...
1975 – Merger of Sigma Chemical and Aldrich Chemical to created Sigma-Aldrich. [13] Their first year earned $43 million in sales. [14] 1999 – Sigma-Aldrich reaches $1 billion in sales; 2005 – Announced membership in The RNAi Consortium [15] 2014 – Merck KGaA announced that it would purchase Sigma-Aldrich for approx. $17 billion (€13.1 ...
[7] [8] [9] Thus the complete absence of thiocyanate or reduced thiocyanate [10] in the human body, (e.g., cystic fibrosis) is damaging to the human host defense system. [11] [12] Thiocyanate is a potent competitive inhibitor of the thyroid sodium-iodide symporter. [13] Iodine is an essential component of thyroxine. Since thiocyanates will ...
Tetramethylammonium hydroxide (TMAH or TMAOH) is a quaternary ammonium salt with molecular formula N(CH 3) 4 + OH −. It is commonly encountered in form of concentrated solutions in water or methanol. TMAH in solid state and its aqueous solutions are all colorless, but may be yellowish if impure.
Nickel(II) thiocyanate is a coordination polymer with formula Ni(SCN) 2. [1] It is a green-brown solid and its crystal structure was determined first in 1982. [ 1 ]
Sodium thiocyanate (sometimes called sodium sulphocyanide) is the chemical compound with the formula NaSCN. This colorless deliquescent salt is one of the main sources of the thiocyanate anion . As such, it is used as a precursor for the synthesis of pharmaceuticals and other specialty chemicals . [ 2 ]
Lead(II) thiocyanate can be formed from the acidification of lead(II) nitrate, Pb(NO 3) 2, with nitric acid, HNO 3, in the presence of thiocyanic acid, HSCN.It may also be made by reacting lead(II) acetate (Pb(CH 3 COO) 2) solved in water with either potassium thiocyanate (KSCN) or ammonium thiocyanate (NH 4 SCN), thus causing a white precipitation of solid lead(II) thiocyanate according to ...
Barium thiocyanate is prepared by mixing barium hydroxide and ammonium thiocyanate in water. [4] 2 NH 4 SCN + Ba(OH) 2 → Ba(SCN) 2 + 2 NH 3 + 2 H 2 O. According to X-ray crystallography, the anhydrous salt is a coordination polymer. The Ba 2+ ions are each bonded to eight thiocyanate anions, with four Ba-S and four Ba-N