isopropyl - ορισμός. Τι είναι το isopropyl
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Τι (ποιος) είναι isopropyl - ορισμός

ALKYL GROUP
Isopropyl; C3H7; 1-methylethyl; Isopropyl radical; Isopropyl group; C-propyl; Propyl; Propyl-; N-propyl

isopropyl         
[???s??'pr??p??l, -p?l]
¦ noun [as modifier] Chemistry of or denoting the alkyl radical ?CH(CH3)2, derived from propane.
Propyl         
·noun The hypothetical radical C3H7, regarded as the essential residue of propane and related compounds.
propyl         
['pr??p??l, -p?l]
¦ noun [as modifier] Chemistry of or denoting the alkyl radical ?C3H7, derived from propane: propyl alcohol.

Βικιπαίδεια

Propyl group

In organic chemistry, propyl is a three-carbon alkyl substituent with chemical formula −CH2CH2CH3 for the linear form. This substituent form is obtained by removing one hydrogen atom attached to the terminal carbon of propane. A propyl substituent is often represented in organic chemistry with the symbol Pr (not to be confused with the element praseodymium).

An isomeric form of propyl is obtained by moving the point of attachment from a terminal carbon atom to the central carbon atom, named 1-methylethyl or isopropyl. To maintain four substituents on each carbon atom, one hydrogen atom has to be moved from the middle carbon atom to the carbon atom which served as attachment point in the n-propyl variant, written as −CH(CH3)2.

Linear propyl is sometimes termed normal and hence written with a prefix n- (i.e., n-propyl), as the absence of the prefix n- does not indicate which attachment point is chosen, i.e. absence of prefix does not automatically exclude the possibility of it being the branched version (i.e. i-propyl or isopropyl). In addition, there is a third, cyclic, form called cyclopropyl, or c-propyl. It is not isomeric with the other two forms, having a different chemical formula (−C3H5 vs −C3H7), not just a different connectivity of the atoms.

Παραδείγματα από το σώμα κειμένου για isopropyl
1. The vehicle is propelled by twin 400–pound thrust, regeneratively cooled rocket engines and fueled by isopropyl alcohol and liquid oxygen.
2. The law asked companies to substitute isopropyl alcohol for ethanol in antiseptics, but many drinkers didn‘t know about the change and were poisoned.
3. It says parents can continue to feed the milk to their babies, regardless of the contamination with the chemical isopropyl thioxanthone (ITX) which is contained in the ink used to print the outside of the packs.