Q.How to identify if the cargo we will carry in tankers is dangerous goods or not? Are there any references where we can see the list of all dangerous goods?

For international transport, UN number is considered to be the synonyms of the "dangerous good".

So if the cargo has a UN number, it is considered dangerous. If there is no UN number assigned to the cargo, the cargo is not considered dangerous.

But before I close my answer, there is one thing that needs to be clarified.

I often see that anywhere the information about "dangerous goods" is asked, we tend to provide the information of the cargo carried by the tankers.

For example, information asked by VTS or in the pre-arrival information required by the agents.

What they are actually interested in is the "dangerous goods in packaged form" and not dangerous goods in bulk.

Tankers generally are considered to be dangerous (loaded as well as in ballast). It is for any dangerous goods in a packaged form that require attentions.