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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 ...
Solutions of TMAH may be used to make other tetramethylammonium salts in metathesis reactions with ammonium (NH 4 +) salts. For example, tetramethylammonium thiocyanate may be prepared from ammonium thiocyanate as follows: [7] NMe 4 + OH − + NH 4 + SCN − → NMe 4 + SCN − + NH 3 + H 2 O
[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 ...
Acid guanidinium thiocyanate-phenol-chloroform extraction (abbreviated AGPC) is a liquid–liquid extraction technique in biochemistry and molecular biology. It is widely used for isolating RNA (as well as DNA and protein in some cases).
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 ]
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