Comparing E210 - Benzoic acid vs E923 - ammonium persulfate
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Interest over time for 2 keywords in U.S. during the last 10 years.
Interest over time for 2 keywords in U.S. during the last 10 years.
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.
What is ammonium persulfate used for?
As E923, it has been used as a flour treatment/bleaching agent, though its authorization for food use is limited and varies by country (not permitted in the EU/UK). Outside food, it’s a strong oxidizing initiator used in polymerization, etching, and hair-bleaching products.
What products contain ammonium persulfate?
You may rarely find it in some flours where permitted, labeled as ammonium persulfate or E923; many regions no longer allow it in food. It’s more commonly present in hair-bleach powders, lab reagents (e.g., gel electrophoresis), and PCB etchants.
5. what aspects of your experiment are controlled by temed and ammonium persulfate?
TEMED and ammonium persulfate generate free radicals to initiate and control the rate of acrylamide polymerization, which affects gelation time and pore size/uniformity in gels. Handle both with care—they are irritants and strong oxidizers.
Ammonium persulfate how to make solution?
For food use, consumers should not be preparing solutions of E923; its food authorization is limited. In labs it’s typically dissolved freshly in water because it decomposes—follow your protocol and the SDS for concentrations and safety.
Ammonium persulfate how to make solution cu?
Copper etching with ammonium persulfate is an electronics application, not a food use; follow the product manufacturer’s instructions for concentration and temperature and observe oxidizer safety. Food use of E923 is restricted and not permitted in the EU/UK.