SwampNut

This might why NBR is resistant to oil, yet readily takes in the wintergreen oil. What is the relative molar mass of Methyl salicylate compared to engine oil? The molar mass of Methyl salicylate is 152.15 g/mol 1 5 9 11 13 14 .Engine oil, on the other hand, is a complex mixture of various hydrocarbons and additives, and its molar mass can vary significantly depending on its specific composition. However, it's generally much higher than that of Methyl salicylate. For instance, the average molecular weight of Palm oil, a type of vegetable oil often used in engine oil formulations, varies from 810 to 855 grams per mole 6 .Therefore, the relative molar weight of Methyl salicylate is significantly less than that of engine oil.

What is the relative volatility of Methyl salicylate compared to engine oil? Methyl salicylate is a volatile compound, meaning it readily evaporates at room temperature[1][3][5][9][13]. Its volatility is one of the reasons it's used as a signaling molecule in plants[1][3][5][9][13]. However, the exact volatility of methyl salicylate in comparison to engine oil is not directly provided in the search results. Engine oil volatility is typically measured using the Noack Volatility Test, which determines the evaporation loss of lubricants in high-temperature service[2][4][6][8][10][12][14]. The more volatile an oil is, the higher its Noack volatility number. Therefore, a low Noack rating indicates a high-quality oil[12]. The oil volatility is defined as the amount of oil desorbed from the column at a temperature of 371 °C, relative to the total oil desorbed or relative to a known quantity of some internal standard[4]. While the exact volatility of methyl salicylate is not provided, it's known to be a highly volatile compound[1][3][5][9][13]. However, without specific data or a direct comparison, it's challenging to definitively state the relative volatility of methyl salicylate compared to engine oil. It's likely that methyl salicylate is more volatile than engine oil given its use in applications that require a high degree of volatility, but this would need to be confirmed with specific experimental data. Citations: [1] https://en.wikipedia.org/wiki/Methyl_salicylate [2] https://www.sciencedirect.com/science/article/pii/0040603189854747 [3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6863746/ [4] https://resources.perkinelmer.com/lab-solutions/resources/docs/app_the-tga-noack-test-for-the-assessment-of-engine-oil-volatility.pdf [5] https://www.frontiersin.org/articles/10.3389/fnut.2022.1018534 [6] https://link.springer.com/article/10.1007/s41104-022-00102-y [7] https://pubchem.ncbi.nlm.nih.gov/compound/Methyl-Salicylate [8] https://www.savantgroup.com/media/SAE-961227-A-Laboratory-Method-for-Measuring-Bulk-Volatility-of-Engine-Oils-Comparative-Results-1996.pdf [9] https://link.springer.com/article/10.1007/s00468-021-02191-y [10] http://www.sciencedirect.com/science/article/pii/0040603189854747/pdf?md5=89a066237245834d6a1486600a08f9d9&pid=1-s2.0-0040603189854747-main.pdf [11] https://health.ec.europa.eu/system/files/2022-08/sccs_o_255.pdf [12] https://bobistheoilguy.com/forums/threads/lower-noack-better-oil.211659/ [13] https://www.sciencedirect.com/science/article/abs/pii/S095656632201048X [14] https://www.savantgroup.com/media/Tribotest-Journal-June-2000-Analysis-of-Engine-Oil-and-Phos-Volatility.pdf [15] https://apps.dtic.mil/sti/tr/pdf/ADA568827.pdf [16] https://www.sae.org/publications/technical-papers/content/892159/

Alcohol is the most universal of solvents and a great carrier for so many things. I wouldn't doubt that it helps, but not sure it's totally necessary. Also just like adding water to whisky, it may break some molecular bonds to increase how it reacts to the rubber. Bottom line-dunno. Perplexity AI explains it ok, not great: The search results do not provide a direct explanation of how methyl salicylate binds to nitrile butadiene rubber (NBR). However, we can infer from the general principles of chemistry and the nature of the materials involved how such binding might occur.Methyl salicylate is an organic compound with a structure that includes both a benzene ring and an ester group. Nitrile butadiene rubber is a synthetic rubber copolymer of acrylonitrile and butadiene. The interaction between methyl salicylate and NBR is likely to be a physical process rather than a chemical reaction.The binding could be due to the following factors: Solubility and Swelling: Methyl salicylate may act as a solvent for the NBR, causing the rubber to swell as the molecules of methyl salicylate intercalate between the polymer chains of the rubber. This can temporarily improve the flexibility and other mechanical properties of the rubber 3 . Secondary Bonding: There could be secondary bonding interactions such as van der Waals forces or dipole-dipole interactions between the polar groups in methyl salicylate and the polar nitrile groups in the NBR 2 5 . Compatibility: The chemical compatibility charts and resistance guides for various rubber materials, including NBR, suggest that certain chemicals can have little to no effect on the rubber, while others can cause degradation or swelling 1 3 4 6 7 . Although these charts do not specifically mention methyl salicylate, they indicate that the compatibility of a chemical with NBR depends on the chemical structure and the resistance of the rubber to that structure. In summary, while the exact mechanism of binding is not detailed in the search results, it is likely that methyl salicylate interacts with NBR through a combination of solubility, swelling, and secondary bonding forces. This interaction can temporarily modify the properties of the rubber, which may be beneficial in certain applications.

Yes! Actually did find a crack when I was going over the "final" check list, and also it's not shiny red aluminum. So the fronts and rears are being replaced. What's another $25 now... If the photos are accurate, the other retarded thing about them not knowing which is which...quantity. The L takes two of the two-screw clamps, so those packages show photos of two. But they fit the R. And my package for the R contained one clamp...for the L. How can I be the first person to tell them? Reminds me of... At least red anodized hardware is dirt cheap compared to burnt blue Ti. Oh yeah, I removed a brake disk bolt to see about installing the speed sensor magnet thing, and found it was mildly chingered up. WTF! So I got some of those in red stainless also.

Long-forgotten chemistry memories ahead, I know this is partially correct and very incomplete... Rubber hardens from losing molecules, but the remaining molecules still have an affinity for another molecule. So the new oil is absorbed and bound to the rubber. Because of its low molar mass (pretty sure) the wintergreen oil should transfer easily. Once the bonds are made with either old oil or new oil, no more oil should bind to the rubber. Given enough time, the new oil could replace some of the old oil in "good" rubber, but probably wouldn't continue to enter the rubber because there would be no attraction. The bag may be permeable by the oil, without actually absorbing/binding the oil. Meaning that it may flow through. Like I've tried to keep acetone in LDPE bottles, and it just disappears. But it has zero effect on the bottle, and the smell goes away completely. At a molecular level, everything is just a sieve; the question is how tight is it and what attraction points do the molecules have to each other to stick. You put beans in a colander and they stay, put rice in and it falls through but a lot sticks to it because there's also an attraction. @RXX could tell me where I fucked his up and fill in the blanks, probably. With a precise scale (IE grain scale) you can easily measure the acquisition of oil, or not, in any substance.

Hmm, would the ingestion hazard on that be swallowing or Keistering?

Oh, absolutely, but we really should be aware of these things. And I have a pretty quick reaction to a lot of respiratory irritants, so I pay attention. Well, right on this forum we have people who say you don't need PPE to use acetone in an enclosed space. The fact that he shows signs of brain damage is total coincidence. But this is why I commented that people would read and SDS or two; you learn so much, and it could change your life.

Apparently once one Chinese vendor gloms on to a particular compatibility and fitment, they all do. I've tried twice to buy a rear brake line clamp for the XR. Both ended up being for the L model, not XR650R. Totally different bikes. Every listing has it backwards. Today I ordered the one for the XR650L. From the parts catalog: My bike: The listings:

Looking at the SDS for Methyl 2-hydroxybenzoate says it's pretty damn volatile with a vapor pressure of 13, boiling temp of 222. But it will be trapped inside the rubber which changes things. This is a great question and hopefully Oscar will love the R5 enough to report in a couple years. I suspect that trapped in the rubber, it will behave like most oils and be pretty stable. Also...tip...the SDS for any product can tell you so much about it. When I wonder what something is actually composed of, or how it may work, I read the SDS. It also points out just how dangerous some things are that are sold to consumers willy-nilly. For industrial use they'd require PPE, but for you to use...meh.

Holy shit.

I totally understand and no hard feelings. You two just can't help making up stuff and posting it as fact. If you are even two people, you're too much alike, I still think you're just two personalities of one person. I understand how little attention your mom(s) gave you and your need to achieve redemption now. Except all you're doing is adding more people who full time ignore you and will never see your bullshit. But apology accepted, and in the future you could maybe just take 20 seconds in google to see if you're going to make a fool of yourself with what you just typed. Or put your sentence in ChatGPT so it can fix it for you.

It makes sounds, but has been flushed regularly. And once just two months ago. This valve has been slowly flowing less and less hot water for months, maybe years, and it was just most noticeable now that the water is barely above solid state. I'm not picturing how that could have come from an obstruction, and think it's a bad valve.

I haven't googled it, figured there would be some experience here. I got the setscrew out with some effort, but the handle won't come op, with pretty significant pulling. The plumbing is actually moving, so there's some risk here. Ideas on removing it? I don't see a great way to get a lube/penetrant in there. It's 18 years old, house lived with very hard water for the first six years of its life. The hot setting is barely passing water, and it's fucking winter.

Yes, you're absolutely right, people who have no clue shouldn't just make up shit, but here we are. Also your obsession with replying to people who can't see your posts is absolutely darling.

I accept yours too.

Surely another apology for just making shit up and spouting it as fact, right? Right?

FAKE TOFU?????

The only electronic difference in the sub-models is the cellular option which is completely retarded. There are color and material options too, as well as two sizes. This is the larger size, base materials, enhanced band. All of them can take all bands within their size.

LOL. Tomek has never let a random problem like reality get in his way. I keep wondering why he thinks I don't exercise too, but not enough to read the drivel and see the back story if there is one. Speaking of which, it's now too cold to mountain bike. Tomorrow it will rain, which means Monday will be peak ground quality and no dust, for both the MTB and the XR650, but so fucking cold.

Hmm, what are the odds that this is an apology for being a pompous asshole while being completely wrong, yet again, and giving people bad advice based on arrogant assumptions? Anyone got a bet? Bueller? Me too. When I tried a version of what I thought was carnivore, it included fiber and other plant micronutrients for the obvious reasons. It's clearly impossible to be 100% vegan, and I believe it's just as clearly impossible to be 100% carnivore.

Well, I now officially think there are people crazier than me on this planet. For now.

So it's literally carnivore as in zero veggies? I thought it was predominantly so, but no humans have lived as pure carnivores other than Eskimos/Inuit/Alaska Natives/snow niggers/whatever we are allowed to say now. So it's truly just animal protein and fats, no plants at all?

As I was stocking up today, it occurred to me that someone who is too stupid to understand a carbohydrate (but still wants to preach about it) may also be too stupid to read a label. Beans, of course, do not need additives, and a home made bean is no better. Also, both nutritionists and chefs agree that canned tomatoes are better and better for you than fresh, in most cases. They are picked at perfection and stabilized immediately, sealing in all the nutrition. "Fresh" tomatoes are never properly ripened unless you go buy them at the farm today. And nutrition loss happens to most fruit and veggies once picked. This precipitous decline of nutritional value as soon as the florets are harvested was also echoed by others. One study in the journal Food Chemistry, for instance, found that broccoli could lose up to 70% of its vitamin C and beta-carotene and 50% of its antioxidant activity in just six days.

You're gonna need a stiffer pull string. So we're standing on the docks, and a Jet Ski pulls up saying that a friend needs help, their boat is dead. Ok, we spring into action, grab a few ropes. A friend is walking to a boat with an arm full of ropes, when another friend asks, "So...are you gonna pull them in or push them in?"