| Kentmann's t. |
(for formaldehyde): dissolve in a test tube 0.1 g of morphine in 1 mL of sulfuric acid; add, without mixing, an equal volume of the liquid to be tested; in a short time the latter will take on a reddish violet color if any formaldehyde is present.
출처: www.mercksource.com/pp/us/cns/cns_health_library.j...
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