9 ms·
Is this ok? >Yttrium is mostly dangerous in the working environment, due to the fact that damps and gasses can be inhaled with air. This can cause lung embolis
by JohnJamesRambo 6y ago
Is this ok?
>Yttrium is mostly dangerous in the working environment, due to the fact that damps and gasses can be inhaled with air. This can cause lung embolisms, especially during long-term exposure. Yttrium can also cause cancer with humans, as it enlarges the chances of lung cancer when it is inhaled.
>Indium compounds are encountered rarely by most people. All indium compounds should be regarded as highly toxic. Indium compounds damage the heart, kidney, and liver, and may be teratogenic.
https://www.lenntech.com/periodic/elements/y.htm https://www.lenntech.com/periodic/elements/y.htm
- deleted 6y ago[deleted]
- awalton 6y agoIts oral LD50 was tested to be more than 5000mg/kg according to Shepherd Color Company's MSDS for Blue 10G513 (as it is known commercially). That's well into "non-toxic" as categorized by the EPA. For perspective, that's more than ten times less toxic than caffeine. So, probably pretty safe when used appropriately. I wouldn't go inhaling it, since any fine powder's not great for the lungs, but that shouldn't be news to anyone. Just wear your N95 when mixing dry pigments as you always should.
- ehnto 6y agoI think that's for the processed pigment though, what about during manufacturing?
- corndoge 6y agoIsn't LD50 only relevant to acute exposure?[0] Just because you can eat 5 grams of something and survive doesn't mean repeated exposure to it in smaller quantities or in other ways won't hurt you (obviously). E.g. acute inhalation of asbestos has no recorded mortality. I think I'm missing something in your post. [0] https://en.wikipedia.org/wiki/Median_lethal_dose https://en.wikipedia.org/wiki/Median_lethal_dose
- icedistilled 6y agoIt's not the LD50 for Cobalt Blue, but the LD50 for soluble Cobalt salts is between 150 and 500 mg/kg and Cobalt toxicity seems to be a thing. But the LD50(rat) for cobalt blue is > 10000 mg/kg according to the MSDS I'm looking at. That doesn't sound toxic. Wiki says this about cobalt: "it causes respiratory problems when inhaled. It also causes skin problems when touched; after nickel and chromium, cobalt is a major cause of contact dermatitis" So for people looking for an example of something that's somewhat toxic, but much less toxic as a paint. Here you go, Cobalt Blue. The color this new can be substituted for. yeah the toxicities are different, but it's the same idea.
- hwillis 6y agoEPA thinks so
- throwaway5752 6y agoProbably not good, but consider Cadmium Red, Chromium Green, Lead White, and Vermillion (Mercury), among others.
- ImprovedSilence 6y agoYeah, but they cause cancer. Things like lymphomas that killed Bob Ross cuz those are the pigments painters use.
- awalton 6y agoRoss's lymphoma was thought to have been caused by dichloromethane exposure from his odorless paint thinner (and him 'beating the devil' out of his brushes aerosolizing it). It's now banned in paint thinners as a result of some pretty long lobbying efforts. It's a little sad, since chemicals like DCM are hard to replace, but if it saves the lives of our artists at the expense of them having a bit of a harder time cleaning their brushes, maybe we can live with that.
- idiocrat 6y agoYes, just another few elements to leak into environment, rivers, oceans. It does not matter if the chemical compound is inert or not, the elements will be well incorporated into a new vector of nature.
- deleted 6y ago[deleted]
- tryptophan 6y agoChemical reactions (such as forming it into a pigment) greatly change the biological effects substances have. For example, you probably shouldn't drink OH- or H2O2, even though it is made of the same atoms as water. Just because the pure elemental form is toxic doesn't make compounds with it toxic as well.
- JohnJamesRambo 6y agoI don't think that is a very good example. A better example would be is there a safe compound with lead or arsenic or mercury (known toxic elements) you would want to take into your body?
- _Microft 6y agoWhat about Barium? Water-soluble barium compounds are toxic while the insoluble barium sulfate is used as radiocontrast agent. https://en.wikipedia.org/wiki/Barium_sulfate#Radiocontrast_agent https://en.wikipedia.org/wiki/Barium_sulfate#Radiocontrast_a...
- voldacar 6y agoWell sulfates in general tend to be highly insoluble in water, and therefore biologically inert, so I think this is still kind of a cherry-picked example
- avianlyric 6y agoIsn’t cherry-picking kind of the point here?
- SAI_Peregrinus 6y agoMercury amalgam (silver, tin, zinc, copper, etc) fillings.
- londons_explore 6y ago
- ashtonkem 6y agoA surprising number of dyes and pigments are very toxic. I have no idea if this is unusually toxic, but it wouldn’t surprise me if it’s the norm.
- dragosmocrii 6y agoI remember Zara was once in the spotlight due to their clothes containing toxic dyes
- scns 6y agoThere are carcinogenic ones used in red lipstick.
- Daub 6y agoDangerous pigments is old news to painters, and artists in general. Check out the book Artist Beware (Michael McCann). Pigments I used, and still use when I can get them, are the Cadmiums (red, yellow), flake white (lead oxide) and Naples yellow. All very poisonous. A great influence on me as an artist, and a good friend, died prematurely almost certainly as a result of his exposure to dangerous materials. In his case, asbestos.
- rini17 6y agoIsn't indium used everywhere in solder as a less toxic replacement for lead?
- okl 6y agoAFAIK only in specialised low-temp solder, like the one sold by Chip-Quik to desolder sensitive components.
- namibj 6y agoThat's Tin-Bismuth eutectic, forming a 99 C (a hair below boiling water) eutectic when mixed with lead.
- okl 6y agoTake a look for yourself: https://www.digikey.com/catalog/en/partgroup/chip-quik-indium-solder-wire/78040 https://www.digikey.com/catalog/en/partgroup/chip-quik-indiu...
- namibj 6y agoYeah, but that's not for desoldering. It's for things like soldering heat sinks to flip-chip dies, or hermetic sealing cans for sensitive components. I'm not surprised by them selling indium solder wire, but they offer all kinds of solder under that brand.
- okl 6y agoOh, ok, thanks for the info.
- MeinBlutIstBlau 6y agoCobalt is used in some colors. Many oil paints are filled with things that can kill you in large doses. Bob Ross likely died from inhaling paint thinner fumes. It just comes with the territory oddly enough...