Traditional Culture Encyclopedia - Traditional culture - How to calculate the formula of handmade soap?
How to calculate the formula of handmade soap?
Entry formula: coconut oil 50%, palm oil 30%, olive oil 20%, total oil 120g.
saponification value
Coconut oil 0. 193 258
Palm oil 0. 140 14 1
Olive oil 0. 137 109
Theoretical dosage of sodium hydroxide in complete reaction: 0. 193× 120×50% (coconut oil) +0. 140× 120×30% (palm oil)+0.
Actual dosage of sodium hydroxide (minus 5%):19.908g× 95% =18.9g.
Water dosage: actual dosage of sodium hydroxide × 2 = 37.8g, about 38mL
The hardness of this soap =258×50% (coconut oil)+14 1×30% (palm oil)+109×20% (olive oil) = 193. 1 is hard.
Remarks: the formula of handmade soap can be designed according to personal preference, as long as the hardness is above 130, it is easy to form. Calculate the dosage of sodium hydroxide and water according to the above method.
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