Dictionary, Defintion, Meaning,What is Aminoplastie Resins, Ammonium Carbonate, Aminophenol, Ammine, Ammonal, Ammonia, Ammoniacal, Ammonia, Liquid, Ammonium Acetate, Fibrous Crystalline Solid

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Dictionary of Chemistry Dictionary of Chemistry - Part 1 Part 2 ASS Atomic Absorption Spectroscopy - ABS Plastics Accumulator - Acetophenone Acetyl Coenzyme A - Acid base Indicator Acidic Dissociation Constant - Actinium Compounds Activated Molecule - Acyloin Condensation Adenosine Monophosphate - Aerosol,Aerogel Albumin (Albumen) - Aldosterone Alkaline Earth Metals - Alkanes (Paraffins) Alkynes (Acetylenes) - Allotropy(Allotrope) Aluminates - Aluminium Alkoxides Aluminium Silicates - Alums Amine Oxides - Amino Acids Aminoplastie Resins - Ammonium Carbonate Ammonium Phosphates - Amphoteric Amyl ether - Andrews Titration Angstrom - Anode Mud Anti isomorphism - Antimonyl Derivatives Apatite - Arndt Eistert Synthesis Arrhenius Equation - Ascorbic Acid, Vitamin Asphaltic Bitumen - Atactic Polymers

Home >> Chemistry Dictionary >>Aminoplastie Resins - Ammonium Carbonate

Your Ad Here	Aminophenol. (C₆H₇NO). A solid crystalline colourless having m.p. 174°C. It is obtained by reduction of 2-nitrophenol with sodium, sulphide and it is used as a fur and hair dye. Aminoplastie resins. The synthetic resins obtained from the reaction of urea melamine, or allied amino compounds with aldehydes. They form the basis of thermosetting moulding material. Ammine. Refer to a coordination complex in which the ligands are ammonia molecules. An example of an ammine is the tetra ammine copper (11) ion [Cu(Nh₃)4]²⁺.
Ammonal. A mixture of ammonium nitrate and aluminium. It is used for explosion. Ammonia (NH₃). A colourless gas has a sharp, pungent odour which makes it possible to detect even very small concentration of the substance in air. Although it is not a poisonous gas, ammonia has a strongly irritation action on the mucous membrances of the eyes, nose, throat and lungs and the gas in high concentration may cause sever injury to the eyes. It is obtained commercially from the combination of hydrogen and nitrogen known as Haber’s Process. Finely divided Fe N₂ + 3H₂ D 2NH₃ The shape is either called pyramidal or described as tertrahedral with one corner occupied by a lone pair.
Its chief applications are in the manufacture of other nitrogen compounds particularly nitric acid, and ammonium slats. Aqueous solution of ammonia because of its mild alkalinity, is a familiar household cleaning agent. Liquid ammonia serves as a good refrigerant in ice plants. Ammoniacal. Describing a solution in aqueous ammonia Ammonia, liquid (anhydrous). It is a colourless mobile liquid with a characteristic odour contains 82.2% N, density 0.6 at 20⁰C. It is obtained by liquefying ammonia gas. It is transported in gas cylinders under pressure. It is used as a solvent, e.g., for alkali and alkaline earth metlas which form blue solutions with metalic glitter and high electric conductivity.	Your Ad Here
Ammonium acetate. (CH₃COON₄). A white deliquescent solid, m.p. 114⁰C. It is used in the manufacture of dyes and as a meat preservative. Ammonium bicarbonate or ammonium hydrogen carbonate. (NH₄HCO₃). A white crystalline solid. It is used in baking powder. Ammonium bromide. (NH₄Br). A colourless crystalline solid with a saline taste. It turns yellowish in air. It is obtained when HBr and NH₃ react in the gaseous state or in solution.
Your Ad Here	Ammonium carbonate [NH₄)₂CO₃]. A white solid, strongly smelling of ammonia due to its decomposition. It is fairly soluble in water. It is obtained by heating a mixture of ammonium sulphate or chloride and chalk in iron retorts. (NH₄)₂SO₄ + CaCO₃ ® CaSO₄ + (NH₄)₂CO₃ It is used as laboratory reagent in qualitative analysis, smelling slat, and in dyeing. It is also used in baking powders. Ammonium chloride. (NH₄CI) A white granular, fibrous crystalline solid. It is fairly soluble in water and causes cooling in solution. It is prepared by boiling equimolecular quantities of ammonium sulphate and sodium chloride in solution: (NH₄)₂SO₄ + 2NaCI ----> Na₂SO₄ + 2 NH₄CI It is used as laboratory regent. It is also used as flux in soldering, galvanizing in medicine and in calico printing.

Ammonium chromate
[(NH₄)₂CrO₄]. A golden yellow solid. It decomposes on heating to the dichromate, NH3 and H2O. It is soluble in water

Ammonium dichromate
[(NH₄)₂Cr₂O₇]. A red crystalline solid. It is highly soluble in water

Ammonium fluoroborate
(NH₄BF₄). A colourless crystals, It is used as an electrolyte

Ammonium fluoride
(NH₄F). A white deliquescent solid. It is used as disinfectant and preservative

Ammonium hydroxide
(NH₄OH). An aqueous solution of ammonia. It has a weak base

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