In formalin, formaldehyde is present at approximately what percent by weight?

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Multiple Choice

In formalin, formaldehyde is present at approximately what percent by weight?

Explanation:
Formalin is a stabilized aqueous solution of formaldehyde. The standard concentration of formaldehyde in this solution is about 37% by weight, with the remaining portion made up of water and a small amount of methanol added to prevent polymerization. This 37% figure is the routinely used strength in pathology and funeral service practice, making it the best answer among the options.

Formalin is a stabilized aqueous solution of formaldehyde. The standard concentration of formaldehyde in this solution is about 37% by weight, with the remaining portion made up of water and a small amount of methanol added to prevent polymerization. This 37% figure is the routinely used strength in pathology and funeral service practice, making it the best answer among the options.

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