Answer: oxidant

AnswerCrossword Clue
OXIDANTRust cause
OXIDANTRusting agent
OXIDANTBleach, for example
OXIDANTRust producer
OXIDANTRust-causing agent
OXIDANTIt causes rust
OXIDANTCombustion-aiding chemical
oxidantchemical agent that oxidizes
oxidantan oxidizing agent