🔍 Key Concepts

• 46 CFR Part 150 – Compatibility of Cargoes tables for tank vessels • How to use the Compatibility Chart for Bulk Liquid Hazardous Materials (intersection of products) • Differences between amines, ketones, and tar/coal-tar products in the compatibility groups

💭 Think About

• Look up each cargo in the compatibility tables and note its assigned group or specific listing; how do these groups typically interact? • When you find one known incompatible pair, check whether each cargo is incompatible with the others or only with one of them. • Ask yourself: does the regulation talk about being fully compatible, incompatible, or allowed only with special separation (e.g., not in the same tank but possibly adjacent)?

✅ Before You Answer

• Verify in the 46 CFR Part 150 tables how ethylenediamine relates to isophorone at their intersection. • Verify how creosote intersects with each of the other two cargoes in the compatibility chart. • Check whether any pair is listed as specifically incompatible or requiring special separation (e.g., segregation, not same tank), which would rule out an answer choice claiming they are “all compatible” or “all incompatible.”