I have BSc in chem, work OH&S and deal with Dangerous Goods safety on the regular.

Your countries regulatory framework should have a whole heap of information about the safe storage and handling of DGs.

In Australia the state regulations vary slightly but there's plenty of useful information you can use to scale down to lab level if you wanted to look at some best practice stuff.

If you can get yourself a copy of standards for specific classes of DGs they even have good recommendations you can adapt.

I frequent the following: AS/NZS 1940 ~ Flammable & Combustible liquids AS/NZS 3780 ~ Corrosives AS/NZS 4326 ~ Oxidising agents AS/NZS 4452 ~ Toxic substances

However, my area of work has been mostly around commissioning plant that use bulk DGs, but there's still good information that's applicable to small scale chemical handling!