三聚磷酸鈉是洗滌劑中不可缺少的優良助劑，多數洗滌劑中的含量為10～50％。氫氧化鉀廠家認為其主要作用可概括為如下幾點：

Sodium tripolyphosphate is an indispensable excellent auxiliary agent in detergents, and the content of most detergents is 10-50%. Potassium hydroxide manufacturers think that its main functions can be summarized as follows:

（1）對金屬離子的螯合作用：日常洗滌用水中，一般都含有致硬金屬離子（主要是Ca2+、Mg2+）。在洗滌過程中，它們將與肥皂或洗滌劑中的活性物形成不溶性金屬鹽，這樣，不僅使洗滌劑的耗量增加，而且使洗后的織物具有令人不快的暗灰色。三聚磷酸鈉具有螯合致硬金屬離子的優異性能，從而可這些金屬離子的不利影響。

(1) Chelation of metal ions: water for daily washing generally contains hard metal ions (mainly Ca2+, Mg2+). In the washing process, they will form insoluble metal salts with the active substances in soap or detergent, which will not only increase the consumption of detergent, but also make the washed fabric unpleasant dark gray. Sodium tripolyphosphate has excellent properties of chelating hard metal ions, which can eliminate the adverse effects of these metal ions.

（2）提高膠溶、乳化和分散的作用：污垢中常含有人體分泌物（主要是蛋白質和脂肪類物質），也含有來自外界的沙土、塵埃等。而三聚磷酸鈉對蛋白質具有膨潤、增溶作用而起到膠溶的效果；對脂肪類物質則可起到促進乳化的作用；對固體粒子則有分散懸浮作用。

(2) Improve the functions of gel dissolution, emulsification and dispersion: dirt often contains human secretions (mainly proteins and fats), as well as sand and dust from outside. However, sodium tripolyphosphate has swelling and solubilizing effects on protein, which has the effect of colloidal dissolution; For fat substances, it can promote emulsification; It can disperse and suspend solid particles.\

（3）緩沖作用：三聚磷酸鈉具有較大的堿性緩沖作用，使洗滌溶液pH值保持在9.4左右，從而有利于酸性污垢的去除。

(3) Buffer effect: sodium tripolyphosphate has a greater alkaline buffer effect, keeping the pH value of the washing solution at about 9.4, which is conducive to the removal of acid dirt.

（4）防止結塊的作用:粉狀合成洗滌劑具有吸濕性，如存放在濕度較大的地方，就要發生結塊現象。結塊的洗滌劑使用時為不便。而三聚磷酸鈉吸水后形成的六水合物，具有干爽的特性。當洗滌劑配方中有大量三聚磷酸鈉時，就能起到防止因吸潮而造成的結塊現象，保持合成洗滌劑的干爽粒狀。

(4) Prevention of caking: powdered synthetic detergent is hygroscopic. If it is stored in a place with high humidity, caking will occur. It is inconvenient to use caked detergent. However, the hexahydrate formed by sodium tripolyphosphate after absorbing water is dry and refreshing. When there is a large amount of sodium tripolyphosphate in the detergent formula, it can prevent the caking phenomenon caused by moisture absorption, and keep the dry granular shape of synthetic detergent.

三聚磷酸鈉主要作用可概括幾點的相關事項就講解到這里了，您對此有什么想咨詢的問題就來我們網站http://www.yiqijieneng.cn吧！

The main functions of sodium tripolyphosphate can be summarized here. If you have any questions about it, please come to our website http://www.yiqijieneng.cn Come on!