The element mercury, listed in Part 2, also has this qualifier. The pure element and any substance, alloy or mixture must be reported as the equivalent weight of the element. No CAS number is provided for these substances. Complete a separate report for tetraethyl lead. Apply the reporting criteria to each substance separately.
Asbestos is the general name for several fibrous minerals and products.
Only asbestos that is brittle and readily crumbled should be reported. This qualifier is used for mixtures of isomers which have the same chemical formula but different chemical structures. The substances with this qualifier are cresol, dinitrotoluene, n -nonylphenol, toluenediisocyanate and xylene. Substances with this qualifier are usually found as mixtures. The total quantity of all isomers must be used in calculating the 10-tonne threshold quantity.