Yān ròu shí jiā yī diǎn xiāosuānnà kěyǐ bǎochí yánsè.
A little sodium nitrate added when curing meat helps preserve color.
Tips
usage
Easily confused with 亚硝酸钠 (yàxiāosuānnà, sodium nitrite, NaNO₂) — different compound, stricter food-safety controls. 硝酸钠 is the 'full oxide'; 亚硝酸钠 is the 'lesser' form.
