"1" is PET. Although it's commonly used for food and liquids for consumption, it's not supposed to be re-used because of possible leaching of harmful elements in the plastic. So, I would not use this type of plastic for liquids, especially hot/warm ones, which I think would increase the rate/likelihood of leaching.
"2" is HDPE, which is food safe - free from BPA and any known carcinagen.
Orange Home Depot buckets are "2" HDPE.
White Lowes buckets are also "2" HDPE ( and are also marked "Food Safe, BPA Free").
Lowes has the matching white Gamma lids, which are very useful when combined with the white bucket above.