Patent ID: 7794841

Claim:
An article of manufacture comprising: a) a container having an internal space having a passivated internal metal surface, said passivated internal metal surface selected from the group consisting of aluminum and aluminum alloys; and b) a composition to be stored in the container, said composition comprising an acid gas and a balance gas contained within the internal space and in contact with the passivated internal metal surface; wherein i) the acid gas has an intended concentration in the balance gas of less than 500 ppb; ii) the acid gas is selected from the group consisting of carbon disulfide, carbonylsulfide, and compounds within the formula Y—S—X wherein S is sulfur, X and Y are the same or different and are independently selected from the group consisting of hydrogen, alkyl, aryl, oxygen, hydoxyl, amine, aminosilane, and alcohol; and iii) the passivated internal metal surface comprises A) a coating that is the reaction product of a silicon-containing material and an oxygen-containing material, and B) a coating that is an amount of the concentrated acid gas adsorbed on or in the passivated internal metal surface which is effective to enhance the stability of the intended concentration over time, the concentration of the concentrated acid gas being at least 50,000 times greater than the concentration of the acid gas of the composition that is to be stored in the container.