Yankee Utility Developing Tank for Film up to 4x5

1/2 US Gallon, or 2 liters

You do not specify a context for container. If you mean to contain chemicals during a processing run involving 4X5 hangers, then sure, that is what they are intended for. For longer term storage, they are not ideal or convenient. They are light tight, but not air or water tight. The little floating lids are not much use. I have occasionally left chemistry in them for a day or so with no ill effects. But I would not store anything in them longer than that. Hope that helps.

No. I had some hangers already and needed additional tanks. There are usually hangers available on eBay no problem.

This developing tank is for developing 4x5 sheet film using sheet film hangers; it isn't designed for roll film. I would suggest that you get the Patterson roll film tank, or similar brand, which is designed specifically for 35mm and 120 size roll film. Unless you are doing a lot of large format photography this would not be the developing system you would want.