凍結 とうけつ防止 ぼうし ざいじゃありませんでした
tōketsubōshizaijārimasendeshita

Noun
Desu Copula

The polite, past negative form of 凍結防止剤

1. Was not antifreeze.; Wasn't antifreeze.

Past/Perfective
Negative
Polite
Terminal Form