1.   The corrosive acid is a respiratory hazard.

2.   Hazardous materials cleanup crews were ready to begin work Wednesday once they received a shipment of lime to neutralize the highly corrosive acid.

3.   He said the acid could not be diverted into containers on land because nothing available could withstand the corrosive acid.

4.   To speed the process, the desperate workers smear tree trunks with highly corrosive sulphuric acid diluted with rice flour, said Pereira.