5 plastic

Hi I have two boxes (Sterilite) which have a recycling symbol on the back with the number five in it. Is this number plastic acceptable for storing copper pennies? Does it have chlorine or something?
deacon wrote:"Plastic #5: this is polypropylene. Yogurt cups and similar wide-necked containers are often made from it, as well as water bottles with a cloudy finish. You’ll also find it in medicine bottles, ketchup and syrup bottles, and straws. This plastic is also considered safe, and is increasingly being accepted by curbside recycling programs."
If its food safe then it should be fine.
deacon wrote:"Plastic #5: this is polypropylene. Yogurt cups and similar wide-necked containers are often made from it, as well as water bottles with a cloudy finish. You’ll also find it in medicine bottles, ketchup and syrup bottles, and straws. This plastic is also considered safe, and is increasingly being accepted by curbside recycling programs."
If its food safe then it should be fine.