Question 62 GLI04 - Mate of LT 500-1600 GRT

The Correct Answer is C ### Why Option C is Correct: Option C states that "Glycerine is compatible with both of the other cargoes." This is true based on chemical compatibility standards used for bulk liquid shipping (often referenced in sources like the IMO IBC Code or industry compatibility charts). 1. **Glycerine (Glycerol)** is an organic alcohol (polyol) that is non-reactive and generally considered a 'neutral' substance in terms of bulk liquid chemical carriage. It is not an acid, a strong alkali, an oxidizing agent, or a reactive monomer. 2. **Ethanolamine** (Monoethanolamine) is an amine and a weak base. 3. **Methyl Acrylate** is an ester and a reactive monomer. Glycerine is chemically inert toward both the basic amine (Ethanolamine) and the reactive ester (Methyl Acrylate). Therefore, it poses no risk of dangerous reaction, heat generation, or polymerization if mixed or stored adjacent to these two products, meaning it is compatible with both. ### Why Other Options Are Incorrect: **A) Methyl acrylate and ethanolamine are compatible, but both must be segregated from glycerine.** * **Incorrect compatibility claim:** Methyl acrylate and Ethanolamine are **incompatible**. Methyl acrylate is a reactive monomer/ester, and Ethanolamine is a basic amine. Mixing these two would cause an exothermic reaction (heat generation) and likely polymerization of the methyl acrylate, creating a dangerous situation. * **Incorrect segregation claim:** As established above, segregation from glycerine is unnecessary because glycerine is chemically inert toward both. **B) Glycerine may be stowed adjacent to methyl acrylate but must be segregated from ethanolamine.** * **Incorrect segregation claim:** Glycerine does not need to be segregated from Ethanolamine. Since Glycerine is chemically inert, it poses no hazard when stored adjacent to this amine. **D) All of these cargoes are mutually incompatible.** * **Incorrect:** While Methyl Acrylate and Ethanolamine are highly incompatible (as noted in A), Glycerine is compatible with both, meaning they are not **mutually** incompatible. Compatibility only fails between the amine and the acrylate.