The most commonly used skin antiseptic, rubbing alcohol, is how many percent alcohol?
Approximately 70% v/v
According to the US Pharmacopoeia, "isopropyl rubbing alcohol USP" and "rubbing alcohol USP" are defined as having roughly 70% by volume of pure isopropyl alcohol and 70% by volume of denatured alcohol, respectively. In the UK and Ireland, a comparable preparation is surgical spirit B.P., which is defined by the British Pharmacopoeia as consisting of 95% methylated spirit, 2.5% castor oil, 2% diethyl phthalate, and 0.5% methyl salicylate.
Retail rubbing alcohol bottles are labeled with an ethanol content ranging from 70-99% v/v, although individual manufacturers are free to use their own formulation standards.
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Rubbing alcohol, which is commonly used as a skin antiseptic, typically contains either 70% isopropyl alcohol or 70% ethanol. Therefore, rubbing alcohol is approximately 70% alcohol.
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
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