Firefighters used an absorbent material to soak up a corrosive chemical at a transport yard in Mt Maunganui today but said some of it had escaped into waterways.

Ten litres of the fuel additive 'Control Blue' was spilled at a Robert Monk Transport in Aviation Avenue about 4am today.

Fire Service shift manager Jaron Phillips said the chemical was highly corrosive acid and could cause severe damage to eyes and skin if people came into contact with it.

"Unfortunately in this case it has entered the drains. They (firefighters) are trying to absorb it and are awaiting for a disposal company before commencing a clean up."

Mr Phillips said Environmental Bay of Plenty was also involved.