Comparing E210 - Benzoic acid vs E452IV - Calcium polyphosphate
Overview
Synonyms
Products
Found in 386 products
Found in 1 products
Search rank & volume
Awareness score
Search volume over time
Interest over time for 2 keywords in U.S. during the last 10 years.
Search history data is not available.
Popular questions
Is benzoic acid soluble in water?
Only sparingly—about 3 g per liter at room temperature; its solubility increases in hot water and it dissolves readily in many organic solvents.
Is benzoic acid polar?
It has a polar carboxyl group but a nonpolar aromatic ring, so overall it’s only weakly polar; its benzoate salt is much more polar and water‑soluble.
Is benzoic acid a strong acid?
No—it's a weak acid, with a pKa of about 4.2.
What is the melting point of benzoic acid?
About 122–123 °C (251–253 °F).
Is benzoic acid bad for you?
At approved food levels it’s considered safe, with an ADI of 0–5 mg/kg body weight/day; some people may experience irritation or hypersensitivity, and benzene formation in certain acidic drinks is monitored and kept very low.
How does polyphosphate remove calcium?
It acts as a sequestrant: the polyphosphate chain binds Ca2+ at multiple oxygen sites to form soluble complexes, preventing calcium from precipitating or causing scale/texture issues. Over time, hydrolysis to orthophosphate can convert some bound calcium into insoluble calcium phosphate, effectively removing it from solution.
What is the e number of calcium polyphosphate?
E452iv.
When calcium ions complex with sodium metaphosphate, a solid calcium phosphate precipitate forms?
Not initially—calcium typically remains in soluble complexes with sodium metaphosphate (a polyphosphate). Precipitation of calcium phosphate generally occurs after the polyphosphate hydrolyzes to orthophosphate or under conditions (e.g., high pH/aging) that drive conversion.