2. Candle flame temperature: the external flame is 950℃, the internal flame is 880℃, the lowest blue zone is 650℃, and the candle oil temperature is about 80℃.
3. The main raw material of candles is paraffin wax (C25H52), which is made from waxy fractions of petroleum by cold pressing or solvent dewaxing. It is a mixture of several higher alkanes, mainly n-docosane (C22H46) and n-octacosane (C28H58), containing about 85% carbon and 14% hydrogen. Accessories added include white oil, stearic acid, polyethylene, essence, etc. Among them, stearic acid (C 17H35COOH) is mainly used to improve the softness, and the specific addition amount depends on what kind of candles are produced.
4, fusible, less dense than water, insoluble in water. When heated, it melts into liquid, colorless and transparent, slightly volatile when heated, and can smell the unique smell of paraffin. Solidified into a white solid when cooled, with a slight smell.