Israeli media today are reporting that last week, Israel thwarted the smuggling of 15 tons of sulfuric acid into Gaza.Sulfuric acid is banned as an ingredient in the manufacture of explosives. The amount seized is enough to help manufacture 3 tons of explosives.
The acid was apparently discovered at Israel's Nitzana border crossing with Egypt, where goods from Egypt to Gaza go before going through the Kerem Shalom crossing. (Arutz-7's English report says it was caught in the Ashdod port on the way to the "Nitzanim" crossing to Gaza, which doesn't exist.)
The 15 tons of sulfuric acid, at 90% concentration, was apparently hidden in a much larger shipment of 30 tons of paint thinner.
Sulfuric acid is allowed into the West Bank.