Daconil question

My sister has some old (10 years) unopened daconil liquid and wants to know if it goes bad. She said it’s gray colored. Is that the normal color?

She needs to spray her tomatoes.

Mine is grayish-white, pretty thick and milky. She should shake it well. I don’t know about if it goes bad at some point. My bottle doesn’t have an expiration date on it.


An quick google search says two to three years shelf life.