hydrate

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hydrate

(hī`drāt), chemical compound that contains water. A common hydrate is the familiar blue vitriol, a crystalline form of cupric sulfatecupric sulfate
or copper (II) sulfate,
chemical compound, CuSO4, taking the form of white rhombohedral crystals or amorphous powder. It decomposes at 650°C; to cupric oxide (CuO).
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. Chemically, it is cupric sulfate pentahydrate, CuSO4·5H2O. When a crystal of the substance is formed, five molecules of water (H2O) are combined in the crystal with each molecule of cupric sulfate (CuSO4). This water is called water of crystallization. When cupric sulfate pentahydrate is heated above 150°C; the water of crystallization is driven off and anhydrous cupric sulfate is formed. It has several properties different from the pentahydrate, e.g., color, density, and crystal structure. Glauber's saltGlauber's salt,
common name for sodium sulfate decahydrate, Na2SO4·10H2O; it occurs as white or colorless monoclinic crystals. Upon exposure to fairly dry air it effloresces, forming powdery anhydrous sodium sulfate.
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 is sodium sulfate decahydrate, Na2SO4·10H2O. Crystals of it readily give up their water of crystallization at ordinary temperatures, forming a powdery coating of the anhydrous salt; this phenomenon (efflorescence) is exhibited by many hydrates. The number of molecules of water present in a given hydrate is fixed. However, some substances form several different hydrates. There are four different hydrates of ferrous sulfate, each with its own unique physical properties. In organic chemistry a compound formed by addition of water to a carbon-carbon double bond is sometimes called a hydrate; it contains a hydroxyl functional group and usually cannot be dehydrated. In commerce a metal hydroxide is sometimes called a hydrate; e.g., calcium hydrate is calcium hydroxide.

hydrate

[′hī‚drāt]
(chemistry)
A form of a solid compound which has water in the form of H2 O molecules associated with it; for example, anhydrous copper sulfate is a white solid with the formula CuSO4, but when crystallized from water a blue crystalline solid with formula CuSO4·5H2 O results, and the water molecules are an integral part of the crystal.
A crystalline compound resulting from the combination of water and a gas; frequently a constituent of natural gas that is under pressure.

hydrate

1. To combine with water or elements of water.
2. Hydrated lime.

hydrate

1. a chemical compound containing water that is chemically combined with a substance and can usually be expelled without changing the constitution of the substance
2. a chemical compound that can dissociate reversibly into water and another compound. For example sulphuric acid (H2SO4) dissociates into sulphur trioxide (SO3) and water (H2O)
3. a chemical compound, such as a carbohydrate, that contains hydrogen and oxygen atoms in the ratio two to one
References in periodicals archive ?
a) M, metoclopramid 10 mg; D, droperidol; DH, dimenhydrinate $100 mg, & 700:600 mg; HH, hyoscine hydrobromide 0.
McClure et al alternated oral administration of diazepam 5 mg, dimenhydrinate 50 mg, and placebo in a group of normal subjects; subjects were also tested after receiving no treatment.
Contract awarded for dimenhydrinate solution for injection 50 mg / ml ampule 1 ml
For example, APP was the first to initiate bar coding which can help reduce medication errors, the first to launch Steri-Tamp which is designed to enhance patient safety, and the only manufacturer to supply piperacillin and dimenhydrinate, both addressing hospital needs.
Dimenhydrinate and meclizine are category B drugs and are especially safe when administered in the smaller doses required to control vertigo and the accompanying nausea.
Step 4: Promethazine hydrochloride (Phenergan) 25 mg every 6 hours or dimenhydrinate 50-100 mg every 4-6 hours.
Fassihi, who has been partnered with SCOLR for the development of the CDT(TM) platforms and is the discoverer of the patented Controlled Delivery Technology(TM) platforms, will present early results of our work on dimenhydrinate, ondansetron, glipizide, among other active pharmaceutical ingredients, which show promise of benefiting from this unique drug delivery platform," Howard concluded.
APP Brings Dimenhydrinate Injection Back to Market After Years of Product Shortages and Unavailability * Return Offers Cost Effective Alternative to Commonly Used Antiemetics * APP Expects to Be the Sole Provider of Dimenhydrinate Injection in the U.
Oral dimenhydrinate (Dramamine) has been used extensively for NVP in Canada but not in this country Like diphenhydramine, it is safe during pregnancy but is tied to oxytocic effects when given intravenously near term.