Hi there!

Tupperware demonstrator here and I dont have the answer for you now but i will do my best to find out for you the 'number' of the plastics used in tupperware.
I have asked many questions about the plastic for my own sake and I do know that all tupperware is made from Water based plastics and water based silicon and all of the colouring is food dye!

I will put my feelers out and see what else i can find out for you!