Noun:

மதுக்கணுகம்,

olefine தமிழ் அர்த்தத்தின் உதாரணம்:

உத்தரப் பிரதேசம் கரிம வேதியியலில் ஆல்க்கீன் (alkene), ஒலிபீன் (olefine), ஒலிபைன் (olefine), அல்லது மதுக்கணுகம் என்பது ஒரு நிறைவுறாத வேதியியல் சேர்மம் ஆகும்.

olefine's Usage Examples:

It will be noticed that compounds containing two double linkages will have the same general formula as the acetylene series; such compounds are known as the " diolefines.

The olefines may be synthetically prepared by eliminating water from the alcohols of the general formula CnH2n+1 OH, using sulphuric acid or zinc chloride generally as the dehydrating agent, although phosphorus pentoxide, syrupy phosphoric acid and anhydrous oxalic acid may frequently be substituted.

Energetic dehydration gives the olefine hydrocarbons, but under certain conditions ethers (see Ether) are obtained.

Unsaturated aldehydes are also known, corresponding to the olefine alcohols; they show the characteristic properties of the saturated aldehydes and can form additive compounds in virtue of their unsaturated nature.

, the general equation of the decomposition being C„1-1 27, ± 2 (paraffin) G_rH2(, - P)+2 (paraffin)+C P H 2 n (olefine).

The simple olefines containing one doublylinked pair of carbon atoms have the general formula (CnH2n; the di-olefines, containing two doubly-linked pairs, have the general formula C0H2n_2 and are consequently isomeric with the simple acetylenes.

The product actually obtained is a mixture of several paraffins and several olefines.

Confining ourselves to cases where titration methods are not employed, the general order is as follows: carbon dioxide, olefines, oxygen, carbon monoxide, hydrogen, methane and nitrogen (by difference).

, olefines are produced, together with the halogen acids, and recombination is prevented by passing the gases through a solution of potash.

In addition to these, a series of open-chain olefine terpenes is known.

123) 2CH 2 :CH CH 2 OH+2NH 3 Na CH,:CH CH3+CH2:CH CH20Na +NaOH+2NH31 from the lower members of the series by heating them with alkyl halides in the presence of lead oxide or lime: C5H,9-I-2CH31 2H1+ C 7 H, 4 i and by the action of the zinc alkyls upon the halogen substituted olefines.

ethylene dibromide) with silver acetate or with potassium acetate and alcohol, the esters so produced being then hydrolysed with caustic alkalis, thus: C 2 H 4 Br 2 + C2H302 Ag-*C2H4(O C2H30)2->C2H4(OH)2+2K C2H302 by the direct union of water with the alkylen oxides; by oxidation of the olefines with cold potassium permanganate solution (G.

, they found it to consist mainly of olefines.