Much thanks Timop.
Annoyingly no other info is on the label apart from the usual "Warning keep out of reach of children."
This is so frustrating, I'm dying to get my new cpu in, and you'd think a supposed computer specialist shop would know what's right from wrong...but then again. Grrrrraagh! I'm so tempted to just risk it.
Regardless, thank you both again for taking the time to try and help me out. Much appreciated.