hth chemical definition
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HTH Chemicals HTH Chemicals. Wholesale of raw materials for the plastic industry. Holland Trading House Chemicals specialises in trading raw materials for the plastic industry. In its many years of undertaking across Europe, HTH Chemicals has built up an extensive network of relations in both Eastern and Western Europe. We deal in a selection of raw materials for a wide variety of applications.
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Toxic Substances Portal - Hexachlorocyclohexane (HCH) 1.1 What is hexachlorocyclohexane? Hexachlorocyclohexane (HCH), formally known as benzene hexachloride (BHC), is a synthetic chemical that exists in eight chemical forms called isomers. The different isomers are named according to the position of the hydrogen atoms in the structure of the chemical.
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- Symbol Hf A bright, silvery metallic element that occurs in zirconium ores. Because hafnium absorbs neutrons better than any other metal and is resistant to corrosion, it is used to control nuclear reactions. Atomic number 72.
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- Chemical Formula: C2H4. CAS Number: 74-85-1. EC Number (EINECS): 200-815-3. Synonyms: Ethene;Acetene;Bicarburretted hydrogen;Elayl;Olefiant gas;C2H4;Athylen;Liquid ethyene;UN 1038;UN 1962.
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- Ethephon definition, a solid compound, C 2 H 6 ClO 3 P, used as a growth regulator to accelerate the ripening of tomatoes, citrus fruit, apples, and other crops. See more. Dictionary.com
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Periodic Elements Hydrogen is the chemical element with atomic number 1. It is represented by the symbol H. At standard temperature and pressure, hydrogen is a colorless, odorless, nonmetallic, tasteless, highly flammable diatomic gas with the molecular formula H2. With an atomic weight of 1.00794 u, hydrogen is the lightest element.
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Ha  (chemistry) chemical element [specialized] a substance that cannot be broken down into any simpler chemical substances and is made of atoms all of the same type (22 of 28 words) dictionary .cambridge .org /dictionary /british /chemical-element
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- 1 Hassium, a chemical element with symbol 'Hs'. 2  Bisulfide, HS−, a chemical compound derived from H2S. 3  Mercapto radical, HS•, a radical molecule.  Hun stuff (a World War I name for mustard gas)
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hydrogen Symbol H A colorless, odorless, highly flammable gaseous element that is the lightest and most abundant element in the universe. It occurs in water in combination with oxygen, in most organic compounds, and in small amounts in the atmosphere as a gaseous mixture of its three isotopes (protium, deuterium, and tritium).
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- A salt is any compound which can be derived from the neutralization of an acid and a base. The word neutralization is used because the acid and base properties of H + and OH-are destroyed or neutralized. In the reaction, H + and OH-combine to form HOH or H 2 O or water molecules.A neutralization is a type of double replacement reaction.A salt is the product of an acid-base reaction and is a much broader term then common table salt as shown in the first reaction. The following are some examples of neutralization reactions to form salts.b.n the reaction, H + and OH-combine to form HOH or H 2 O or water molecules. A neutralization is a type of double replacement reaction. A salt is the product of an acid-base reaction and is a much broader term then common table salt as shown in the first reaction.
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ether 1. (Elements & Compounds) Also called: diethyl ether, ethyl ether or ethoxyethane a colourless volatile highly flammable liquid with a characteristic sweetish odour, made by the reaction of sulphuric acid with ethanol: used as a solvent and anaesthetic. Formula: C2H5OC2H5.
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Glossary of Chemical Terms pH. the negative logarithm of the hydrogen ion concentration [H+]; a measure of the degree to which a solution is acidic or alkaline. An acid is a substance that can give up a hydrogen ion (H+); a base is a substance that can accept H+.
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- 1 You must be given 90 days (3 months) written notice by the Housing Authority before the rent increase goes into effect. 2  The rent increase can only be given on the second anniversary date after your move-in. 3  your rent CAN be increased to over 40% of your income with this type of increase.
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Silane Hydrogen (H), a colourless, odourless, tasteless, flammable gaseous substance that is the simplest member of the family of chemical elements. The hydrogen atom has a nucleus consisting of a proton bearing one unit of positive electrical charge; an electron, bearing one unit of negative electrical charge, is also associated with this nucleus.
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ortho- In chemistry, italicized prefix denoting that a compound has two substitutions on adjacent carbon atoms in a benzene ring. For terms beginning ortho-or o-, see the specific name.
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Standard Heat of Formation (Standard Enthalpy of Formation) Chemistry Tutorial 1 Standard Heat (Enthalpy) of Formation, ΔHfo, of any compound is the enthalpy change of the reaction by which it is formed from its elements, reactants and products all being in a given standard state.  By definition, the standard enthalpy (heat) of formation of an element in its standard state is zero, ΔHfo = 0.
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- Medical Dictionary. hydrochloride. play. noun hy·dro·chlo·ride \-ˈklō(ə)r-ˌīd, -ˈklȯ(ə)r-\. Medical Definition of hydrochloride. : a salt of hydrochloric acid with an organic base used especially as a vehicle for the administration of a drug.
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Medical Definition of Hg Hg: Symbol for the metallic element mercury. The abbreviation mm Hg means millimeters of mercury, the height of a column of mercury, as in a blood pressure reading. Mercury is poisonous to people. See Mercury poisoning.
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- The Arrhenius definition of acids and bases is one of the oldest. An Arrhenius acid is a substance that when added to water increases the concentration of H1+ ions present. The chemical formulas of Arrhenius acids are written with the acidic hydrogens first.
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- Introduction and Definitions: A salt is any compound which can be derived from the neutralization of an acid and a base. The word neutralization is used because the acid and base properties of H+ and OH- are destroyed or neutralized. In the reaction, H+ and OH- combine to form HOH or H2O or water molecules. A neutralization is a type of double replacement reaction.
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Hydrogen cyanide Hydrogen cyanide (HCN), sometimes called prussic acid, is an organic compound with the chemical formula HCN. It is a colorless, extremely poisonous and flammable liquid that boils slightly above room temperature, at 25.6 °C (78.1 °F).
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- Read more.. [OH-].[OH-].[Sr+2] Molecular Formula A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound, using a single line of chemical element symbols and numbers.
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- A salt is any compound which can be derived from the neutralization of an acid and a base. The word neutralization is used because the acid and base properties of H + and OH-are destroyed or neutralized. In the reaction, H + and OH-combine to form HOH or H 2 O or water molecules.A neutralization is a type of double replacement reaction. A salt is the product of an acid-base reaction and is a much broader term then common table salt as shown in the first reaction.The following are some examples of neutralization reactions to form salts.b.n the reaction, H + and OH-combine to form HOH or H 2 O or water molecules. A neutralization is a type of double replacement reaction. A salt is the product of an acid-base reaction and is a much broader term then common table salt as shown in the first reaction.
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Arrhenius, Bronsted-Lowry, and Lewis Acids and Bases in Organic Chemistry Arrhenius Acid Definition: Hydronium breaks up to yield an H+ in solution. Arrhenius Base Definition: Hydroxide is an OH-dissolved in water. Bronsted-Lowry Acid Definition: Hydronium is an H+ donor regardless of solution. Bronsted-Lowry Base Definition: Hydroxide attacks and accepts the H+ from hydronium.
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- Arrhenius Acids and Bases. The Arrhenius definition of acids and bases is one of the oldest. An Arrhenius acid is a substance that when added to water increases the concentration of H1+ ions present. The chemical formulas of Arrhenius acids are written with the acidic hydrogens first.
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- (July 2009) Hand-to-hand combat (sometimes abbreviated as HTH or H2H) is a lethal or non-lethal physical confrontation between two or more persons at very short range (grappling distance) that does not involve the use of firearms or other distance weapons.