There's a range. Acetone is also polar, no hydrogen bonding (hydrogen only on carbon), alchohol is slightly less polar, has OH- groups, will hydrogen bond. WD-40 is aliphatic (no double bonds) straight chain hydrocarbon which is non-polar, B-12 has aromatic (double bonds and cyclic) iirc, including toluene, etc. Brake fluid is probably polar, maybe a glycol with lots of OH- groups since it should be miscible with water.
They all have different uses as solvents depending upon what you're trying to dissolve, as you're most likely aware.
And what reason would that be?? Even you just characterized water as an ionic solvent.
DMSO (dimethylsulfoxide) is considered to be the "universal solvent" from a pure chemical pov, and even that is just a hyperbole that chemists indulge in, acknowledging that it does dissolve more stuff than other solvents.
Someone mentioned alcohols. These are inneresting because you can "tailor" their solvent properties by smoothly varying the number of carbons *and* the geometry of said carbons, as well as the number of -OHs.
With single OHs, past 4 or 5 carbons (butanol, pentanol), alcohols dramatically drop in miscibility with water, at 8 carbons (octanol), it starts becoming greasy. Methanol would of course be the most water like.
Ditto the "fatty acids", with the shortest (formic and acetic (vinegar) ) being decidedly good polar solvents, with the same pattern as the alcohols, and the mid-length and longer ones being what you eat -- olive oil, lard, etc.
The vegetable oils are surprisingly good solvents for really miserable shop-grease, superior to dishwashing liquid in a number of cases, and proly close to the industrial GoJo type stuff. Slower in their action, but really good, depending on the grease at hand.
You read pretty often this "universal solvent" bidniss about water, but I think it is a mis-appropriation of the idea that water seems to be universally required for life -- at least life as we know it. And, there might be some gray areas, even there.
Pardon my obtuseness, but why remove the markings? Either it comes off as part of the prep before painting, or it gets mechanically removed in the manufacturing process. Or you're working to hard. Or there is some other reasons I'm unaware of, (which is obvious, or I wouldn't be asking.).
-- pyotr filipivich We will drink no whiskey before its nine. It's eight fifty eight. Close enough!
The bar stock is part of a simple mounting bracket for a medical device used in blood collection. It does not get machined all over, nor painted, nor anodized. Saw to length, round 4 corners, drill 2 holes, deburr. If I had a good vibratory deburr setup, that would take care of the deburring and printed marking in one step.
There are thousands of these devices in use with the original mounting. A very few customers have unique needs, thus this special bracket. The co-founder and designer of the device, who sadly passed away last week, had a real talent for not getting carried away in design, always coming up with a simple and inexpensive way to get the job done, but getting the job done right.
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