hydrate


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Related to hydrate: Methane hydrate, Gas hydrate

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 ?
China is set to rule the roost by being largest producer and consumer of low dosage hydrate inhibitors as venture capitalists vie to invest in East Asia.
This opportunity will only be realised, however, if countries leading hydrate development, particularly Japan, pursue policies to implement the necessary infrastructure tapping into hydrate-rich fields.
represents the response curves of 4PNPAN/(PVB-co-PVA/PVAC) films including 0.213 phr of 4PNPAN and different chloral hydrate concentrations in terms of variation in optical density per unit thickness, (IA.
Unit IV-2 also contains alternations of sand and silt in the middle part but with lower hydrate saturation.
To sum up, propane, NaCl, and SDS can improve the methane hydrate nucleation kinetics in certain conditions.
A score higher than 1.0 indicates the beverage hydrates better than water while a score lower than 1.0 indicates that it hydrates worse.
Gas hydrates in the Southern Caspian Basin have been of great interest since the 1980s.
This is driving the demand for the powder and benefitting the global copper II citrate 2.5 hydrate market.
* Hydra Intense ($31, women) is formulated with a powerful blend of ginger and madreselva (honeysuckle) to deeply hydrate, heal, and protect the skin.
Hydrate formation curves can also be estimated by using the guidelines provided in Section 20 of the Gas Processors and Suppliers Association (GPSA) Handbook.
Based on a consumer perception study, Fision Hydrate left skin instantly feeling smoother and better moisturized when compared to a commercial lotion and the placebo.
of methane hydrate. This was quite unexpected for this particular environment and the scientists speculated that if the East Coast could harbour so many methane pits, there could be tens of thousands more awaiting discovery.