"Rust Converter" coating heat stability and toxicity

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I just repaired an antique blacksmithing post vise, and had a notion to halt and prevent future corrosion by treating it to a coat of CRC "Rust Converter". However while cleaning up, I noticed the following statement under "Supplemental Information" in the safety data sheet:"When exposed to extreme heat or hot surfaces, vapors may decompose to harmful or fatal corrosive gases such as hydrogen chloride and possibly phosgene."Obviously, a blacksmith vise will more than occasionally see heat and hot surfaces. I'm not a big fan of chemical weapons such as phosgene. Well-publicized fatalities due to TIG welding over chlorinated brake cleaner residue highlight the damage done by tiny amounts of this poison. I shot CRC tech support an email, will post any answers I get, but I wonder if anyone here knows: does this warning apply only to the uncured liquid product, or is it a property of the cured coating in perpetuity? The latter would suggest any object so coated is, in effect, a poison gas bomb for anyone who might try to cut, grind or weld on it in the future. Many recommended applications ("cars, truck frames/beds, boats and trailers, railings, fences, iron or steel furniture, equipment, tools and more") will definitely see welding, grinding and cutting at some point. Assuming the worst, does anyone know of a good way to remove such a coating? Bit of a catch-22 if you can't safely grind or power brush it. Chem strippers might work, but don't they use dichloromethane?Let me know if you have any relevant experience. A safe and happy 2019 to all!-Zed
Reply:An occasional light coat of 80w90 gear oil will prevent rust.MikeOl' Stonebreaker  "Experience is the name everyone gives to their mistakes"Hobart G-213 portableMiller 175 migMiller thunderbolt ac/dc stick Victor O/A setupMakita chop saw
Reply:Sandblast it and then wash it with Red Devil lye. Then paint the damn thing with 1400 degree BBQ paint
Reply:If the CRC stuff is anything like Ospho, it's not a preventative for long term rust prevention.  If the vise will be used regularly, I'd just wipe it down with oil every once in a while.  If it's not going to be used, spray it with cosmoline.
Reply:Here's the reply from CRC Technical Services. On Jan 3, 2019, at 11:53 AM, Technical Services  wrote:Hello sir,Thanks for choosing CRC products. I would not recommend this product for the application below at 1100 degrees C. This is beyond the normal use of this product. I would also not recommend welding near it. At that temperature it is possible that the coating may decompose and produce hazardous fumes. To remove the product, I would recommend using abrasion as long as the surface is between 50F and 90F. If you have further questions please let me know. Have a good day.Best regards,XXX YYYYYYTechnical ServiceCRC Industries, Inc.(800) 521-3168
Reply:Yeah. I just looked up the MSDS. The magic ingredient is "vinylidene dichloride acrylic copolymer latex" and the chlorine in that is what gives me pause. I wouldn't mess with that at high temperatures, either.If you're worried about rust long-term, I'd hit it with a needle scaler, then wax it, as tackit suggested. Occasional applications of something like Boeshield or Cosmoline might be helpful too.cl