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Grignard Reagent

Grignard reagents are named after their discoverer, French chemist Victor Grignard, who jointly received the 1912 Nobel Prize for Chemistry. Grignard reagent: R-Mg-X ; R= any alkyl or aryl group , Mg= magnesium metal and X= any halogen.It is prepared by adding an alkyl halide to magnesium shavings in diethyl ether or tetrahydrofuran.It is strong bases, they add to epoxides and carbonyl groups, and used to make other organometallic reagents by reacting with metal-halogen bonds. They have wide applications in synthetic chemical industry.

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Hydrogen Bromide

Hydrogen bromide is the diatomic molecule. It can be synthesized by a variety of methods. It may be prepared in the laboratory by distillation of a solution of sodium or potassium bromide with phosphoric acid or diluted sulfuric acid. It can also be found as a liquid, either as hydrobromic acid (hydrogen bromide dissolved in water) or as a compressed gas under pressure (anhydrous hydrogen bromide). Hydrogen bromide can react violently when mixed with some chemicals, metals or water, forming a flammable, explosive gas. Hydrogen bromide is used to make chemicals and drugs, as a solvent and as a veterinary drug, used in combination with hydrogen chloride and chlorine for plasma etching of polysilicon, used in the manufacture of organic and inorganic bromides and hydrobromic acid, as a reducing agent, and as a catalyst in controlled oxidations, used in the alkylation of aromatic compounds, and in the isomerization of conjugated diolefins.

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Hydrogen Sulfide

Hydrogen sulfide is a very poisonous, flammable gas with the characteristic foul odor of rotten eggs. It often results from the bacterial breakdown of organic matter in the absence of oxygen, such as in swamps and sewers. It also occurs in volcanic gases, natural gas, and some well waters. The human body produces small amounts of H2S and uses it as a signaling molecule. Several organosulfur compounds are produced using hydrogen sulfide. Upon combining with alkali metal bases, hydrogen sulfide converts to alkali hydrosulfides such as sodium hydrosulfide and sodium sulfide, which are used in the degradation of biopolymers. Hydrogen sulfide used to have importance in analytical chemistry for well over a century, in the qualitative inorganic analysis of metal ions. In the purification of metal ores by flotation, mineral powders are often treated with hydrogen sulfide to enhance the separation.

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Iodoacetic Acid

For the chemical modification of thiol groups in proteins (specific for cysteine at pH 8.5) 1; Alkylates methionine 2

Iodocyclo Hexane

The photodissociation dynamics of iodocyclohexane has been studied using velocity map imaging2. Nickel catalyzed coupling of iodocyclohexane with 1-octyne has been investigated3.

Mercuric Nitrate

Mercuric nitrate is a toxic colorless or white soluble crystalline mercury(II) salt of nitric acid. It was used to treat fur to make felt in a process called 'carroting'. It is an oxidizing agent. It is also used as an analytical reagent, in bronzing, as a nitrating agent, and in organic synthesis. It has antiseptic and miticidal properties; once used topically in the treatment of demodectic mange in dogs, but replaced by safer and more effective agents.

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Nickel Phosphate

Nickel Phosphate is an inorganic compound.It is a light green solid that occurs as the mineral arupite.

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Phenyl Mercaptan

Phenyl Mercaptan is an organosulfur compound.It is the simplest aromatic thiol. It is used as a intermediate in synthesis of other compounds.

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Potassium Iodide

Potassium iodide is an inorganic compound. It is used medicinally in tablets. It is a precursor to silver iodide an important chemical in photography. It is a component in some disinfectants and hair treatment chemicals. It is also used as a fluorescence quenching agent in biomedical research, an application that takes advantage of collisional quenching of fluorescent substances by the iodide ion. The major uses of potassium iodide include use as a nutritional supplement in animal feeds and also the human diet.

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Propylene Glycol

Propylene Glycol is an organic compound. Large amount of it is used in the plastics industry for the manufacture of polyester fibers and alkyd resins. It is used as a main ingredient in automobile antifreeze and engine-cooling liquids and in brake and hydraulic fluids due to its useful properties of low freezing point, involatility and low corrosive activity. It is used in the preparation of body-care surfactants and also as a humectant in foods and cosmetics. It is used as a solvent for colouring or flavouring agents as well as in many oral, injectable or topical pharmaceuticals. Its antibacterial property is applied in the preparation of sanitizing lotions.

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