noun
admixture; adulterant; something mixed in
Refers to something mixed into a product or substance; often implies an unwanted, inferior, or purity-reducing addition, as in 混ぜ物のない.
この蜂蜜には混ぜ物が入っていない。
This honey has no adulterants mixed into it.
混ぜ物のない純粋なオリーブ油を選びたい。
I want to choose pure olive oil with nothing mixed in.
Means an impurity or foreign matter; 混ぜ物 focuses on something mixed in, while 不純物 emphasizes lack of purity.
A transparent compound of 混ぜ, the continuative stem of 混ぜる meaning 'to mix,' and 物 meaning 'thing'; literally, 'a mixed-in thing.'