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Author: Subject: why still lead in paints that are labeled "Lead Safe" ?
rockyit98
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[*] posted on 2-4-2021 at 06:57
why still lead in paints that are labeled "Lead Safe" ?


A bit while back I repainted with Red floor paint that was labeled "child safe" but also had markings that read "600 mg/L " of lead in the paint. I was not worried since it was for outdoor use but why even that? can we just done with lead in paints. I still use 60/40 solder but I collect most droplets of "waste" tiny drops. solder is much safe since even surface got oxidize its mostly SnO and wash hands very well. I think that we should eliminate Pd from consumer products even car batterys . what do you think?



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Metacelsus
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[*] posted on 2-4-2021 at 11:35


Yeah, 600 mg/L of lead does not sound like "safe" to me!

I wouldn't be too worried about lead in car batteries since it stays there, but paint is a big concern.




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UC235
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[*] posted on 2-4-2021 at 12:11


Lead paint is considered >5000mg/kg dry weight. So while it does contain some lead, it is probably well below that limit. I would expect that it is not deliberately added but comes from contamination in the other pigments/opacifiers used.
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Fulmen
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[*] posted on 2-4-2021 at 12:49


No, I'm pretty sure it's added deliberately. Some lead compounds are excellent siccatives (curing accelerator) as well as strong and durable pigments.



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RustyShackleford
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[*] posted on 2-4-2021 at 12:54


Perhaps its in a biounavailable form.
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S.C. Wack
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[*] posted on 2-4-2021 at 13:30


Quote: Originally posted by Metacelsus  
I wouldn't be too worried about lead in car batteries since it stays there


...and the joyous men threw off their hats and sang their safety song and danced their safety dance, as a recycler chucked batteries into the fire while wondering why everyone is so stupid.





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Metacelsus
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[*] posted on 3-4-2021 at 02:38


OK, I should clarify: it stays there assuming people aren't idiots. Of course, some people are idiots.

Still, it's not like paint, which is directly exposed to the environment.




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Sulaiman
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[*] posted on 3-4-2021 at 03:31


lead occurs naturally in soil, 15 to 40 ppm,
https://ag.umass.edu/soil-plant-nutrient-testing-laboratory/...
So pollution should be considered relative to that




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kryss0
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[*] posted on 17-4-2021 at 07:43


Also depends on wether its described as Total Lead or soluble lead, limits for Total lead will be a lot higher than those for soluble lead.
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rockyit98
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[*] posted on 17-4-2021 at 10:39


lead makes people stupid, stupid people use lead stupidly , now that's a positive feedback loop.



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Praxichys
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[*] posted on 20-4-2021 at 05:49


Quote: Originally posted by Sulaiman  
lead occurs naturally in soil, 15 to 40 ppm,
https://ag.umass.edu/soil-plant-nutrient-testing-laboratory/...
So pollution should be considered relative to that

To add to this, widespread use of leaded gasoline has contaminated roadside soils, though these hotspots are gradually diluting in countries where leaded gas has been phased out.

https://pubmed.ncbi.nlm.nih.gov/15074616/
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