tag:blogger.com,1999:blog-8964719845369935777.post2367615290057214273..comments2024-03-27T21:23:40.339-04:00Comments on Chemjobber: n-Hexane, benzene, still troublesome in ChinaChemjobberhttp://www.blogger.com/profile/15932113680515602275noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-8964719845369935777.post-30863177956775314212015-04-22T17:55:39.484-04:002015-04-22T17:55:39.484-04:00"n-hexane...causes neurological damage at jus..."n-hexane...causes neurological damage at just 50 parts per million"<br /><br />And the students who used to work next to me wondered why i was always complaining that they left their column fractions out on their benchtop to evaporate.bad wolfnoreply@blogger.comtag:blogger.com,1999:blog-8964719845369935777.post-61683945895236153462015-04-22T17:16:17.826-04:002015-04-22T17:16:17.826-04:00Industrial solvents are different from solvents fo...Industrial solvents are different from solvents for home use. Most solvents for home use are made to be relatively nontoxic on unprotected exposure (methylene chloride in paint strippers a likely exception), not terribly toxic on periodic exposure, or used in small amounts (nail polish remover). In contrast, solvents used in industry don't have those requirements - industry can use nontoxic or less toxic solvents (such as water), but the assumption for industrial solvents would be that they don't have to be so because people would not be exposed to them (the process is contained) or be exposed minimally, and that people who were likely to be exposed would have access to appropriate protective equipment, and they would be used on large scales in most cases. So, while it might not be true in particular cases, the correlation of toxicity with industrial solvent (as opposed to solvent for home use) isn't unreasonable.<br /><br />The implication of the term would be that the solvents used weren't for unprotected use, and they weren't. It's just that the companies using them didn't care about their workers, and so the protection that their use should have required wasn't employed.Hapnoreply@blogger.comtag:blogger.com,1999:blog-8964719845369935777.post-25071649881959305062015-04-22T13:05:52.745-04:002015-04-22T13:05:52.745-04:00Actually, I agree that water is a very useful indu...Actually, I agree that water is a very useful industrial solvent. But point taken. Chemjobberhttps://www.blogger.com/profile/15932113680515602275noreply@blogger.comtag:blogger.com,1999:blog-8964719845369935777.post-81025608071335552922015-04-22T11:56:12.824-04:002015-04-22T11:56:12.824-04:00"Is it really necessary to clean screens and ..."Is it really necessary to clean screens and motherboards with industrial solvent? Surely there's a better way?"<br /><br />Industrial solvent: The use of this term with a negative connotation is, in my opinion, equivalent to the use of toxins and chemicals. Does "industrial solvent" mean anything other than a liquid that dissolves substances and is used in an industrial process? Wouldn't we consider water to also be an industrial solvent?DuckOfDoomnoreply@blogger.com