[HN Gopher] Scheele's Green, the Color of Fake Foliage and Death
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Scheele's Green, the Color of Fake Foliage and Death
Author : conductor
Score : 46 points
Date : 2023-03-15 19:36 UTC (3 hours ago)
(HTM) web link (www.theparisreview.org)
(TXT) w3m dump (www.theparisreview.org)
| perihelions wrote:
| - _" Commercial greens are often made with pigment green 7, which
| contains chlorine and can't be recycled or composted safely."_
|
| ?
| croo wrote:
| Uhhh what's the problem with chlorine?
|
| Chlorine kills living cells, bad for any living organism in
| water, most often damaging fish's sensitive gills as well as
| the skin that covers their entire bodies.
|
| Definitely bad for compost as it kills all the microbes and
| little fun guys doing the work.
| ray__ wrote:
| Elemental chlorine maybe, but there's none of that in green
| 7.
| eganist wrote:
| Largely for the sake of being snarky, I asked gpt-4 "What risks
| exist from the usage of green-7 as a pigment, and why can't it
| be recycled or composted safely?"
|
| It assumed green-7 was hypothetical, so i had to tune the
| prompt a bit. Second try _[edit: the below is mostly wrong, as
| evidenced by the wikipedia article linked by perihelions]:_
|
| ---
|
| Phthalocyanine Green G, also known as Pigment Green 7, is a
| synthetic green pigment derived from copper phthalocyanine. It
| is commonly used in various industries such as inks, coatings,
| and plastics due to its stability and excellent color
| properties. However, there are some risks associated with its
| usage and disposal: Environmental risks: Like
| many other synthetic pigments, Phthalocyanine Green G is not
| biodegradable. It can accumulate in the environment,
| particularly in water bodies, and affect aquatic life. Its
| presence in water may disrupt ecosystems by inhibiting the
| growth of certain microorganisms or reducing light penetration,
| which in turn affects photosynthesis and the overall health of
| aquatic plants. Health risks: While Phthalocyanine
| Green G is generally considered non-toxic for humans, there is
| still a possibility of health risks when ingested or inhaled in
| large amounts. Exposure to high concentrations of the pigment
| can cause respiratory and digestive issues.
| Occupational hazards: Workers involved in the production,
| handling, or application of Phthalocyanine Green G may be at
| risk of exposure to potentially hazardous chemicals or dust
| from the pigment. Proper safety precautions, including wearing
| personal protective equipment and adequate ventilation, should
| be taken to minimize these risks.
|
| Phthalocyanine Green G cannot be safely recycled or composted
| due to its synthetic nature and resistance to degradation.
| Recycling processes for pigments generally require the
| separation of the pigment from the material it is applied to,
| which may not be feasible or efficient for Phthalocyanine Green
| G. Additionally, composting relies on biodegradation, a process
| that does not break down synthetic pigments like Phthalocyanine
| Green G.
|
| Instead of recycling or composting, proper disposal methods for
| Phthalocyanine Green G should be followed according to local
| waste management guidelines. This may involve sending the
| pigment to a landfill or a specialized waste treatment facility
| where it can be managed safely to minimize environmental and
| health risks.
| perihelions wrote:
| Your AI is lost in the wilderness.
|
| - _" Environmental risks: Like many other synthetic pigments,
| Phthalocyanine Green G is not biodegradable. It can
| accumulate in the environment, particularly in water bodies,
| and affect aquatic life. Its presence in water may disrupt
| ecosystems by inhibiting the growth of certain microorganisms
| or reducing light penetration, which in turn affects
| photosynthesis and the overall health of aquatic plants."_
|
| This compound is *not soluble in water*.
|
| https://en.wikipedia.org/wiki/Phthalocyanine_Green_G
| baybal2 wrote:
| [dead]
| permo-w wrote:
| fascinating article. one brief element I found interesting was
| the government regulation of production materials (arsenic in
| green dye)
|
| I was genuinely unaware that it went that far back. for whatever
| reason I had the impression that these kinds of laws largely
| began in the post-war era
| _a_a_a_ wrote:
| Nah, stuff goes way back. Check out
| https://en.wikipedia.org/wiki/Phossy_jaw
|
| "The Grand Duchy of Finland, part of the Russian Empire, in
| 1872, was the first country to place an absolute ban on the
| manufacture, use, and sale of white phosphorus in matches,
| followed by Denmark in 1874 and France in 1897"
| addaon wrote:
| > carving breasts into rocks and crafting cloth into petals.
|
| The anti-parallelism of this phrase is epic.
| StrictDabbler wrote:
| It is probably a syllepsis, where a governing word or phrase
| applies differently in multiple contexts. The canonical example
| is "He hastened put out out the cat, the wine, his cigar and
| the lamps."
|
| In this case the governing word would be "into" but I'm
| hesitant because prepositions in English are treated so
| differently than they are in Latin or Greek. It also verges on
| paraprosdokian.
|
| Anyway, I love these structures, so thank you for drawing
| attention to it.
| illiarian wrote:
| Could you say that the writer's style is... florid?
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