My extinguisher historian hat will need to be dusted off for this!
It's neither of those substances above, neither are vaporising liquids.
A picture would help, as well as more info from the label such as the manufacturer etc, but it is likely to fall into three categories (on order of likelihood)
1) halon 1211 - Bromochlorordifluoromethane
2) mix of halon 1211 - Bromochlorordifluoromethane & halon 1301 - Bromotrifluoromethane
3) halon 1301 (very unlikely)
The 70's saw the mass use of the aerosol can and the explosion of BCF into the mainstream of extinguishing agents - this lead to almost everyone making halon aerosol extinguishers. As well as the market leaders Firemaster, Fire Extinguisher Valve Co (made for other users) & FireJet everyone brought them out including many car spares companies like Redex & Simoniz.
BCF was the main chemical used - however, the labelling on many products was full of typos and incorrect names and abbreviations as several of the preserved models I have state, so CAH Vapourising liquid doesn't surprise me as an example of gobbledegook.
I can assure you that if it is an aerosol can extinguisher it will not be CTC or Methyl Bromide. If it was an old brass aerosol type can like a 'Presto' it could be CBM, but I am sure it is a BCF model.
As for disposal, if it wasn't rusted and corroded I'd take it for preservation, but otherwise you need to use an approved disposal agent for Halons (& other 'dead' extinguishers) - if you are not in the fire trade you need to call Chubb Fire, if you are in the trade call Thomas Glover. A fee will be charged
