Comparing E552 - Calcium silicate vs E537 - ferrous hexacyanomanganate
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Interest over time for 2 keywords in U.S. during the last 10 years.
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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.
How often do seth thomas helmsman ships clock with barometer e537-007 with wood base sell?
E537 is the E‑number for ferrous hexacyanomanganate, a synthetic anti‑caking agent used in table salt, not a clock model, so clock sales frequency isn’t applicable.
How old is my nickel e537-00 corsair ships clock?
E537 denotes the food additive ferrous hexacyanomanganate, not a date or model code for clocks; it’s used as an anti‑caking agent in salt and isn’t related to clock age.
What is the key size for e537-005?
There is no key size for E537—it’s a food additive code for ferrous hexacyanomanganate. Where permitted, it’s used at very low levels in salt as an anti‑caking agent and isn’t a consumer hardware item.