caustic acid warning sign

acid sign warning caustic corrosive hazard danger hot water scald hand icon burning burn scalding liquid caution drop substance chemical hydrochloric sulfuric vector avoid skin contact use wear gloves ppe beware careful harmful injury damage health risk hurt work workplace safety logo symbol pictogram banner label isolated trauma hazardous signage placard yellow mark white background icons signs logos clipart web design flat abstract clip art symbols computer graphic graphics drawing cartoon signage placard work