chemical group


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Noun1.chemical group - (chemistry) two or more atoms bound together as a single unit and forming part of a molecule
chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
building block, unit - a single undivided natural thing occurring in the composition of something else; "units of nucleic acids"
acyl, acyl group - any group or radical of the form RCO- where R is an organic group; "an example of the acyl group is the acetyl group"
alcohol group, alcohol radical - the chemical group -OH
aldehyde group, aldehyde radical - the chemical group -CHO
alkyl, alkyl group, alkyl radical - any of a series of univalent groups of the general formula CnH2n+1 derived from aliphatic hydrocarbons
allyl, allyl group, allyl radical - the univalent unsaturated organic radical C3H5; derived from propylene
amino, amino group - the radical -NH2
amyl - a hydrocarbon radical that occurs in many organic compounds
azido group, azido radical - the univalent group N3- derived from hydrazoic acid
azo group, azo radical - the bivalent group -N=N- united to two hydrocarbon groups
benzyl, benzyl group, benzyl radical - the univalent radical derived from toluene
benzoyl group, benzoyl radical - the univalent radical derived from benzoic acid
molecule - (physics and chemistry) the simplest structural unit of an element or compound
arsenic group, cacodyl group, cacodyl radical, cacodyl - the univalent group derived from arsine
carbonyl group - the bivalent radical CO
carboxyl, carboxyl group - the univalent radical -COOH; present in and characteristic of organic acids
chromophore - the chemical group that gives color to a molecule
cyanide group, cyanide radical, cyano group, cyano radical - the monovalent group -CN in a chemical compound
glyceryl - a trivalent radical derived from glycerol by removing the three hydroxyl radicals
hydrazo group, hydrazo radical - the bivalent group -HNNH- derived from hydrazine
hydroxyl, hydroxyl group, hydroxyl radical - the monovalent group -OH in such compounds as bases and some acids and alcohols
ketone group - a group having the characteristic properties of ketones
methylene, methylene group, methylene radical - the bivalent radical CH2 derived from methane
propyl, propyl group, propyl radical - the monovalent organic group C3H7- obtained from propane
butyl - a hydrocarbon radical (C4H9)
nitro group - the group -NO3
nitrite - the radical -NO2 or any compound containing it (such as a salt or ester of nitrous acid)
uranyl, uranyl group, uranyl radical - the bivalent radical UO2 which forms salts with acids
vinyl, vinyl group, vinyl radical - a univalent chemical radical derived from ethylene
References in periodicals archive ?
The president of SOS BIAA considers that the level of pollution by the particles is worrying pointing at the industrial activities of the Tunisian Chemical Group specialized in the production of chemical fertilizers.
US-based private equity firm Arsenal Capital Partners' specialty polymers and additives platform, Polymer Solutions Group, has acquired specialty chemicals manufacturer Sasco Chemical Group, Inc.
Wanhua Chemical Group was established by the National Light Industry Department of the PRC in the late 1970s.
The industrial area of Gabes has recovered gradually its usual production pace after the resumption of activity in plants of the Tunisian Chemical Group (GCT) and industrial companies based in the region.
The completion of the second production line has raised the total production capacity of Hitachi Chemical Group to approximately 200 million m2 per year in mainland China.
ADPnews) - Apr 4, 2011 - Austrian plastic pipe maker Pipelife, a joint venture of building materials maker Wienerberger AG (WBAG:WIE) and Belgian chemical group Solvay (EBR:SOLB), has acquired the plastics production unit of French plastic pipes maker Alphacan, Wienerberger said today.
For arriving at its ratings, CRISIL has combined the business and financial risk profiles of SCIL and Nutracare International, collectively referred to, herein, as the Salvi Chemical group.
After the business was sold to German chemical group Brenntag AG in July 2010, the ownership is no longer strategically justified, EAC said.
Noting in particular the effects on colorants from pollution-related closures of intermediates manufacturing plants in China, that country's elimination of value-added-tax refunds that had long benefited pigment makers, and the return of near-record prices for crude oil, Sun Chemical Group President Greg Lawson said in a statement that his company "will continue to invest in those area's that provide our customers with innovative products and services allowing them to present the best value propositions in the market.
The researchers begin by attaching a chemical group to a monomer, the individual unit of a polymer chain.
AXA Private Equity, in association with Eliokem's management team headed by its CEO, Jacques Collonges, signed a share purchase agreement with the American private equity firm, Littlejohn and Company, LLC to acquire Eliokem, the specialty chemical group, through a leveraged buy-out transaction for approximately 130 million [euro].
Each functional chemical group is easily distinguished from the others, and family resemblances occur among chemically similar species, such as pyridine and n-hexylamine.

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