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Hydrogen Disulfide

Hydrogen disulfide is an inorganic compound. It readily decomposes under ambient conditions to hydrogen sulfide and sulfur. In organosulfur chemistry, hydrogen disulfide adds to alkenes to give disulfides and thiols.

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Hydrogen Iodide

Hydrogen iodide is a diatomic molecule. It is used in organic and inorganic synthesis as one of the primary sources of iodine and as a reducing agent. It can be used to synthesize sodium iodide or potassium iodide for increasing iodine content of salt.

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Hydrogen Isocyanide

Hydrogen Isocyanide is a linear triatomic molecule.It is a zwitterion and an isomer of hydrogen found primarily in dense molecular clouds, though it is ubiquitous in the interstellar medium.It is formed primarily through the dissociative recombination of HNCH+ and H2NC+, and it is destroyed primarily through ion-neutral reactions with H3+ and C+.

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Hydrophobic Sand

Hydrophobic sand is made by exposing regular sand to trimethylsilanol vapor. The trimethylsilanol coating is hydrophobic and makes the sand un-wettable. It does not allow water molecules to pass through its layers, yet allows oil to do so, making it very useful in cleansing water of oily contamination. When oil-contaminated water makes contact with Hydrophobic Sand, the oil quickly penetrates the sand, leaving clean water behind. It can be used for trapping petroleum spilled from oil tankers in coastal waters. When sprinkled on floating petroleum, it binds with the oily material, creating clumps of oil trapped within the sand, allowing it to be easily extracted. This prevents the petroleum from contaminating marshes and beaches. It can also be used in areas such as dump sites, where the product is laid under the waste material. Should these materials leak any oily substances, the sand will absorb the waste and protect the natural ground water that lies below.

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Dihydroquinidine is an organic compound and as a cinchona alkaloid closely related to quinine. A derivative of this molecule is used as chiral ligand in the AD-mix for Sharpless Dihydroxylation.

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