What is the difference between methyl stearate and hexadecanoic acid isopropyl ester?
One side methyl group- otherwise virtually identical identical- formula is the same. I bet the properties are very close. That methyl group in isopropyl hexadeconoate probably has a bit more effect on the oxyl main chain than if it was far away- probably slightly more acidic.
Soap is primarily sodium stearate. It leaves a film when it combines with hard water to form calcium stearate (soap scum). Body wash is a detergent that does not form soap scum. It, like Zest bath bars has no sodium stearate. The difference between the Zest and most body washes is the fragrance in the recipe and that you are paying for a whole lot of water and a fancy bottle.
ethanol has the formula C2H5OH and is suitable for consumption by humans,isopropyl alcohol(C3H8O) is an isomer of propanol with the OH alcohol functional group on the second carbon as opposed to at the end of the chain as normal,whats marketed as isopropyl alcohol(rubbing alcohol) in America actually contains no isopropyl alcohol as far as i know,just denatured ethanol.isopropyl aclohol is a skin irritant and is metabolised to acetone in the body,it is about twice as…
Ethyl alcohol is C2H6O, consisting of a two carbon atoms bound together as well as a number of hydrogen atoms. One of them bound to an OH group. Isopropyl alcohol is C3H8O consisting of a 3-carbon chain, with each carbon atom bound to at least 1 hydrogen atom. The middle carbon atom is bound to the OH group.
Isopropyl alcohol is C3H8O, consisting of a 3-carbon chain. The middle carbon atom is bound to the OH group and 1 hydrogen atom while the other 2 are each bound to the middle carbon and 3 hydrogen atoms. Methyl alcohol is CH4O, consisting of a single carbon atom bound to 3 hydrogen atoms and an OH group.
Scum is created when calcium ions (and or magnesium ions) form an insoluble precipitate with soap. Soap consists of sodium salts of fatty acids. e.g. sodium stearate (aq) + calcium ions (aq) = calcium stearate (s) + sodium ions (aq) Scum is the calcium stearate. Limescale is created when hard water i heated, or when it evaporates. It is formed because calcium hydrogen carbonate is unstable. Ca(HCO3)2 (aq) + heat = Cac03 (s) +H20 (l)…
Isopropyl alcohol is a mono-alcohol. It is a C3-chain with a single hydroxyl (=alcohol) group sitting on the central carbon atom: CH3-CHOH-CH3. Propylene glycol is a di-alcohol. It is also a C3-chain but with two hydroxyl groups, the one sitting on the central carbon atom and the other one sitting on one of the terminal carbon atoms: CH3-CHOH-CH2OH. Hope that is clear enough.
In the past there was no difference. Technological development of different 'soaps' now bar soap is basically still sodium stearate with some air whipped into it or fragrances added for various brands. Laundry soaps are phosphate compounds and the organic part is a different fatty acid to make it liquid instead of solid so that it disperses into the water more quickly and evenly.
Isopropyl alcohol and propyl alcohol are isomers. Isomers are molecules with the same chemical formula, but in which the atoms are arranged differently. Both compounds consist of 3 carbon atoms, 8 hydrogen atoms, and 1 oxygen atoms. In each compound, the three carbon atoms are connected by single bonds, there is an "alcohol group" consisting of oxygen bonded with hydrogen(-OH), and the remaining 7 hydrogens bond with the carbon atoms. In propyl alcohol, the -OH…
Rubbing alcohol, is a liquid prepared and used primarily for application. It is prepared from a special denatured alcohol solution and contains 97.5-100% by volume of pure, concentrated ethonal(ethyl alcohol) or isopropyl alcohol (isopropanol). Individual manufacturers can use their own "formulation standards" in which the ethanol content usually ranges from 70-99% In the UK the equivalent skin preparation is surgical spirit which is always based on an ethyl alcohol-methyl alcohol mixture.
Epidemiological studies suggested an association between isopropyl alcohol and paranasal sinus cancer; however, subsequent analysis suggests that the "strong-acid" process used to manufacture isopropyl alcohol may be responsible for these cancers [ACGIH 1991]. The International Agency for Research on Cancer has concluded that the evidence for the carcinogenicity of this process is adequate but that the evidence for isopropyl alcohol itself is inadequate [IARC 1987]. http://www.osha.gov/SLTC/healthguidelines/isopropylalcohol/recognition.html