Applicants holding driving licence/learnerâs licence/conductorâs licence desire for noting change of address shall make an application on plain paper along with documents and any one of the following proof of address :
alkali refining. in fat and oil processing: Alkali refining. Many of these can be removed by treating fats at 40Â° to 85Â° C (104Â° to 185Â° F) with an aqueous solution of caustic soda ( sodium hydroxide) or soda ash (sodium carbonate). The refining may be done in a tank (in which case it is called batch or tank refining) or in a continuous system.
The term caustic can also mean corrosive.. This type of brake fluid can be corrosive to some paints, chromes, and plastics. It also can cause irritation when exposed to skin, and is toxic if ingested. I suspect this is why brake fluid is labeled as caustic. Regarding your question about pH: it doesn't apply. pH is a measure of the H+ ions in an aqueous (water) solution. The lower the pH, the greater the content of H+ ions in the water, and the more acidic it is.