Add 2 ml of nitric acid and 2 ml of ferric ammonium sulfate solution. ScienceDirect ® is a registered trademark of Elsevier B.V. ScienceDirect ® is a registered trademark of Elsevier B.V. Structure, properties, spectra, suppliers and links for: Ammonium thiocyanate, 1762-95-4. Ammonium thiocyanate can also be used to determine the iron content in soft drinks by colorimetry. This designation includes any isomers and hydrates, as well as any solutions and mixtures containing this substance. These corrosion data are mainly based on results of general corrosion laboratory tests, carried out with pure chemicals and water solutions nearly saturated with air (the corrosion rate can be quite different if the solution is free from oxygen). The substance identifiers displayed in the InfoCard are the best available substance name, EC number, CAS number and/or the … Ammonium thiocyanate is made by the reaction of carbon disulfide with aqueous ammonia. Pour cela, du thiocyanate d'ammonium NH4SCN et de l'hydroxyde de baryum octahydraté, Ba(OH)2.8H2O réagissent : Le thiocyanate d'ammonium est stable dans l'air à température ambiante. Ammonium thiocyanate. Sodium thiocyanate. 2 Kit Part: Y Responsible Party Name: LAB-AIDS, INC Address: 17 COLT COURT City: RONKONKOMA NY 11779 Info Phone: 516-737-1133 Emergency Phone Number: 516-737-1133 Resp. 4.80 Ammonium iron (III) sulfate, (NH 4 Fe(SO 4) 2.12H 2 O) 4.81 Indicator solution Prepare by adding 10 ml of nitric acid 1 + 2 (4.13) to 100 ml of a cold saturated water solution of ammonium iron (III) sulfate (4.80). Ammonium thiocyanate is an inorganic salt commonly used for thiocyanation of organic compounds. Potassium Thiocyanate solution can also be used to standardize Mercuric Nitrate solutions using Ferric Alum as the indicator: 2 KSCN + Hg(NO 3) 2 → Hg(SCN) 2 (white precipitate) + 2 KNO 3. excess SCN-+ Fe 3+ → [FeSCN] 2+ (red complex at endpoint) Ammonium Thiocyanate and Potassium Thiocyanate solutions can be used interchangeably in these determinations. Wash off immediately with plenty of water for at least 15 minutes. 100g; Reagent Grade. Precautionary Statement. Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. Ammonium Thiocyanate (1762 -95 -4) LD50 oral rat 750 mg/kg ATE US (oral) 750.000 mg/kg body weight ATE US (dermal) 1100.000 mg/kg body weight ATE US (gases) 4500.000 ppmV/4h ATE US (vapors) 11.000 mg/l/4h ATE US (dust, mist) 1.500 mg/l/4h Skin corrosion/irritation : Not classified Serious eye damage/irritation : Not classified L−1 potassium thiocyanate solution. The odorless inorganic compound has many industrial and consumer uses that include chemical analysis, photography, and as a fertilizer. Titrate with the ammonium thiocyanate solution to the first appearance of a red-brown color. Produced from ammonia and hydrogen fluoride. Il est utilisé comme adjuvant de teinture dans l'industrie textile, comme produit traceur en prospection pétrolière. With thiocyanate as indicator iron (III) and aluminium (III) can be titrated simultaneously if [Fe +3 ]/ [Al +3] ⩽ 1 4; iron (III) is titrated directly with EDTA, and aluminium (III) is determined by back-titration of the excess of EDTA with cobalt nitrate solution in an acetone-water medium. Le dithiocarbamate d'ammonium est formé comme intermédiaire qui, par chauffage, se décompose en thiocyanate d'ammonium et sulfure d'hydrogène: : CS 2 + 2 NH 3 (aq) → NH 2 C(=S)SNH 4 → NH 4 SCN + H 2 S Réactions Brief Profile - Last updated: 10/11/2020 Print. Serious eye damage/eye irritation Category 1; Hazard Statement. Shop a large selection of Ammonium products and learn more about Ammonium Thiocyanate. Obtain … Application Ammonium thiocyanate may be used in the synthesis of the following: • Substituted 2-aminothiazole derivatives by reacting with -halo ketone carbonyls in the presence of N-methylimidazole.5 • Thiiranes from corresponding oxiranes in the presence of lithium tetrafluoroborate. Prepare by dissolving (3,8 ± 0,1) g of ammonium thiocyanate (4.78) in water and making up to 1 000 ml. Notre site sauvegarde des traceurs textes (cookies) sur votre appareil afin de vous garantir de meilleurs contenus et à des fins de collectes statistiques.Vous pouvez désactiver l'usage des cookies en changeant les paramètres de votre navigateur. Ammonium thiocyanate is stable in air; however, upon heating it isomerizes to thiourea: Thiourea can be produced from ammonium thiocyanate, but more commonly it is produced by the reaction of hydrogen sulfide with calcium cyanamide in the presence of carbon dioxide. NH4SCN est faiblement acide. Mix the solutions by swirling. Ammonium dithiocarbamate is formed as an intermediate in this reaction, which upon heating, decomposes to ammonium thiocyanate and hydrogen sulfide: Copyright © 2021 Elsevier B.V. or its licensors or contributors. Language: English (United Kingdom) English (United Kingdom) 中文(中华人民共和国) News Login Login This study demonstrates the suitability of serum thiocyanate as an indicator of tobacco smoke. EUH032-Contact with acids liberates very toxic gas. 40 CFR 116.4; … Ammonium thiocyanate is an acutely toxic, colorless crystalline solid that is soluble in water. *Please select more than one item to compare Journal of the Chinese Chemical Society 1979 , 26 (2) , … Nitric acid violently oxidized a thiocyanate solution [Bretherick 1979 p. 121]. Le thiocyanate d'ammonium peut être produit par réaction entre du disulfure de carbone avec de l'ammoniaque. Ammonium thiocyanate is an inorganic synergist that is not a plant protection product and is out of scope with respect of EU regulation 1107/2009. By continuing you agree to the use of cookies. نمایش یک نتیجه . 4. Ammonium hexachloroplatinate. Shipping Information Ammonium thiocyanate is available for shipping throughout the continental United States with one (1) week lead time. Man bestimmt das Eisen(III) direkt mit EDTA, das Aluminium indirekt durchi Titration des überschüssigen EDTA mit einer Co(NO3)2 Lösung im Aceton—Wasser System. 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