Boeshield T-9 Rust & Corrosion Protection

The SDS classifies an aspiration hazard at the mixture level: if swallowed, the thin petroleum-distillate carrier can enter the lungs rather than the stomach, which is a serious risk that drives the DANGER signal word regardless of normal spray-on use. The same SDS section lists skin irritation from direct contact and a mild narcotic effect (drowsiness or dizziness) from breathing concentrated aerosol mist in an unventilated space.

Prevention is the stronger side. Community reports on forums like Bob Is The Oil Guy and Trawler Forum describe T-9 as a solid but not top-tier penetrant on heavy rust, while consistently confirming months-long protection from the waxy residue it leaves behind on cast iron, fishing gear, and marine hardware. Light-to-moderate rust yields in 10-15 minutes for most owners.

Yes. The product listing and physical label carry a Prop 65 warning, and the petroleum distillate carrier is a substance California associates with its Prop 65 list. The SDS itself lists 'None' in its Prop 65 section, but that reflects a technical exemption rather than an affirmative clearance, so the label warning is treated as authoritative.

The SDS chemistry translates to situational eye and lung protection (aerosol mist near the face, brief exposure) and recommended skin protection, since the SDS confirms skin irritation at the mixture level. Apply outdoors or in a well-ventilated area, avoid prolonged or repeated skin contact, and do not induce vomiting if swallowed; seek medical attention immediately.