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3D model (Jmol)
ECHA InfoCard 100.009.642
Molar mass 137.179 g/mol
Boiling point 165 °C (329 °F; 438 K) (0.040 bar)
V03AB27 (WHO)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

4-Dimethylaminophenol (abbreviated in medical practice as DMAP) is an aromatic compound containing both phenol and amine functional groups. It has the molecular formula C8H11NO.


4-Dimethylaminophenol has been used as an antidote for cyanide poisoning.[1] It has also been shown to be effective in treating hydrogen sulfide toxicity.[2]

It works by generating methemoglobin.[3]

This is suitable as an emergency treatment only; treatment must be followed up with sodium thiosulfate or cobalamin.

In an animal model, it has shown effectiveness when given intramuscularly.[4] Though, intramuscular injection should be avoid due to the probability of muscular necrosis after injection. Intravenous injection is recommended in a dose of 250 mg.[5]

See also[edit]


  1. ^ Kampe S, Iffland R, Korenkov M, Diefenbach C (December 2000). "Survival from a lethal blood concentration of cyanide with associated alcohol intoxication". Anaesthesia. 55 (12): 1189–91. doi:10.1046/j.1365-2044.2000.01628.x. PMID 11121929. 
  2. ^ Lindenmann J, Matzi V, Neuboeck N, Ratzenhofer-Komenda B, Maier A, Smolle-Juettner FM (December 2010). "Severe hydrogen sulphide poisoning treated with 4-dimethylaminophenol and hyperbaric oxygen". Diving and Hyperbaric Medicine. 40 (4): 213–7. PMID 23111938. Retrieved 2013-06-07. 
  3. ^ Vick JA, Von Bredow JD (1996). "Effectiveness of intramuscularly administered cyanide antidotes on methemoglobin formation and survival". J Appl Toxicol. 16 (6): 509–16. doi:10.1002/(SICI)1099-1263(199611)16:6<509::AID-JAT382>3.0.CO;2-V. PMID 8956097. 
  4. ^ Vick JA, Froehlich H (July 1991). "Treatment of cyanide poisoning". Mil Med. 156 (7): 330–9. PMID 1922842. 
  5. ^ Federation Of American Scientists (1 February 1996). "NATO HANDBOOK ON THE MEDICAL ASPECTS OF NBC DEFENSIVE OPERATIONS" (PDF): 334.