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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 ...
Thiocyanate [6] is known to be an important part in the biosynthesis of hypothiocyanite by a lactoperoxidase. [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.
An example of back titration, the Volhard method, named after Jacob Volhard, involves the addition of excess silver nitrate to the analyte; the silver chloride is filtered, and the remaining silver nitrate is titrated against ammonium thiocyanate, [1] with ferric ammonium sulfate as an indicator which forms blood-red [Fe(OH 2) 5 (SCN)] 2+ at the end point:
In aquatic environments, ammonia exists in a dynamic balance between its toxic form, known as unionized ammonia (NH 3), and its non-toxic counterpart, ammonium (NH 4 +). This equilibrium is influenced by factors such as water temperature and pH levels; for instance, at a pH of six, the ratio of ammonia to ammonium is approximately 1:3000, but ...
Thiourea is a planar molecule. The C=S bond distance is 1.71 Å. The C-N distances average 1.33 Å. [4] The weakening of the C-S bond by C-N pi-bonding is indicated by the short C=S bond in thiobenzophenone, which is 1.63 Å. Thiourea occurs in two tautomeric forms, of which the thione form predominates in aqueous solutions.
Benedict's quantitative reagent contains potassium thiocyanate and is used to quantitatively determine the concentration of reducing sugars. [2] This solution forms a copper thiocyanate precipitate which is white and can be used in titration. The titration should be repeated with 1% glucose solution instead of the sample for calibration.
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. TMAH and many other TMA salts containing simple anions thermally decompose into trimethylamine. [8] Dimethyl ether is a major decomposition product rather than methanol. [9 ...
Phenyl thiocyanate and phenyl isothiocyanate are isomers. Organic thiocyanates are organic compounds containing the functional group RSCN. the organic group is attached to sulfur: R−S−C≡N has a S–C single bond and a C≡N triple bond. [1] Organic thiocyanates are valued building blocks.