You would have to dig very deep into IATA DG Regulations. Anything going via the USA (e.g. FEDEX, UPS) requires more than just proper packing and documentation, lots of permits and exemptions required.
Key is a proper MSDS, issued by the manufacturer.
Suggest to contact Cargo Training International
http://www.cargotraining.com/cargo-t...s-contact.html
They should be able to help you, as they have very experienced specialist on hand.