E224

功能: en:Antioxidant, en:Preservative

Potassium metabisulfite, K2S2O5, also known as potassium pyrosulfite, is a white crystalline powder with a pungent sulfur odour. The main use for the chemical is as an antioxidant or chemical sterilant. It is a disulfite and is chemically very similar to sodium metabisulfite, with which it is sometimes used interchangeably. Potassium metabisulfite is generally preferred out of the two as it does not contribute sodium to the diet. Potassium metabisulfite has a monoclinic crystal structure which decomposes at 190 °C, yielding potassium sulfite and sulfur dioxide: K2S2O5-s- → K2SO3-s- + SO2-g- - 维基百科

欧洲食品安全局的评价: Scientific Opinion on the re-evaluation of sulfur dioxide -E 220-, sodium sulfite -E 221-, sodium bisulfite -E 222-, sodium metabisulfite -E 223-, potassium metabisulfite -E 224-, calcium sulfite -E 226-, calcium bisulfite -E 227- and potassium bisulfite -E 228- as food additives (2016-04-14)

欧洲食品安全局(EFSA) 已经确定，没有超过5%的人群存在每日摄入的摄入量超过可接受摄入量的风险。E224

要评估您对E224食品添加剂的暴露程度，您可以浏览我们包含它的产品列表。请参阅下面带有 products的E224列表。

	婴幼儿	幼儿	孩子	青少年	成人	老年
	< 1	1至2岁	3至9岁	10至17岁	18至64岁	65+
高风险 (50%以上的人)
中等风险 (5%以上的人)

: 达到或超过可接受的每日摄入量 (ADI) 的风险