Comparing E552 - Calcium silicate vs E557 - hemimorphite
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Found in 1,368 products
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Search volume over time
Interest over time for 2 keywords in U.S. during the last 10 years.
Interest over time for 3 keywords in U.S. during the last 10 years.
Popular questions
How to remove calcium silicate from pool?
Calcium silicate scale is very hard and relatively acid‑resistant, so it’s typically removed by mechanical means (pumice/scale pads or bead blasting) after lowering pH and using a sequestering agent; an acid spot test that doesn’t fizz helps confirm it’s silicate, not carbonate. Prevent recurrence by keeping water balanced (pH/alkalinity/calcium) and using a sequestrant.
What is calcium silicate board?
A rigid, noncombustible building/insulation board made from calcium silicate hydrates, valued for fire resistance, moisture tolerance, and dimensional stability. It’s used for fireproofing, lining stoves/flues, and thermal or acoustic insulation.
How to cut calcium silicate board?
Score‑and‑snap works for thin sheets; thicker boards are cut with a circular saw using a carbide or diamond blade at a slow feed rate. Control dust with wet cutting or HEPA extraction and wear PPE (respirator, eye protection, gloves).
Is calcium silicate bad for you?
As a food additive (E552) used mainly as an anticaking agent, it’s considered safe at permitted levels (JECFA ADI “not specified”; FDA GRAS). The main concern is inhaling fine dust in occupational settings, which can irritate the respiratory tract.
Is calcium silicate vegan?
Yes—it's a mineral/synthetic ingredient with no animal-derived components, so E552 is generally suitable for vegans.
What is calamine lotion used for?
Calamine lotion (zinc oxide with a little ferric oxide) is used topically to relieve itching and mild skin irritation from bites, rashes, or poison ivy; this is different from E557 hemimorphite, a zinc silicate food anticaking agent.
What does calamine lotion do?
It soothes itching and irritation and helps dry oozing skin lesions via an astringent, protective barrier effect; this is not the same substance as E557 hemimorphite (zinc silicate) used in foods.
Can you leave calamine lotion on overnight?
Yes—on intact skin it’s generally fine to leave on for several hours or overnight, rinsing off if it over-dries or irritates; note this concerns calamine lotion, not E557 hemimorphite (a food additive).
Does calamine lotion expire?
Yes; check the bottle’s expiration date, as older product can separate or become less effective—replace if expired or if odor/texture changes; E557 hemimorphite is unrelated to this topical product.
Can you put calamine lotion on a dog?
Avoid unless a veterinarian advises—dogs may lick calamine (zinc oxide), and ingestion can be harmful; E557 hemimorphite is a food additive, not a veterinary topical.