Hexamethylenetetramine
Hexamethylenetetramine, also known as methenamine, hexamine, or its trade name Urotropin, is a heterocyclic organic compound with the formula (CH2)6N4. This white crystalline compound is highly soluble in water and polar organic solvents. It has a cage-like structure similar to adamantane. It is useful in the synthesis of other organic compounds, including plastics, pharmaceuticals, and rubber additives. It sublimes in vacuum at 280 °C.
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Names | |||
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Preferred IUPAC name
1,3,5,7-Tetraazaadamantane | |||
Other names
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Identifiers | |||
3D model (JSmol) |
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2018 | |||
ChEBI | |||
ChEMBL | |||
ChemSpider | |||
DrugBank | |||
ECHA InfoCard | 100.002.642 | ||
EC Number |
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E number | E239 (preservatives) | ||
26964 | |||
KEGG | |||
MeSH | Methenamine | ||
PubChem CID |
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RTECS number |
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UNII | |||
UN number | 1328 | ||
CompTox Dashboard (EPA) |
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SMILES
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Properties | |||
C6H12N4 | |||
Molar mass | 140.186 g/mol | ||
Appearance | White crystalline solid | ||
Odor | Fishy, ammonia like | ||
Density | 1.33 g/cm3 (at 20 °C) | ||
Melting point | 280 °C (536 °F; 553 K) (sublimes) | ||
85.3 g/100 mL | |||
Solubility | Soluble in chloroform, methanol, ethanol, acetone, benzene, xylene, ether | ||
Solubility in chloroform | 13.4 g/100 g (20 °C) | ||
Solubility in methanol | 7.25 g/100 g (20 °C) | ||
Solubility in ethanol | 2.89 g/100 g (20 °C) | ||
Solubility in acetone | 0.65 g/100 g (20 °C) | ||
Solubility in benzene | 0.23 g/100 g (20 °C) | ||
Acidity (pKa) | 4.89 | ||
Pharmacology | |||
J01XX05 (WHO) | |||
Hazards | |||
Occupational safety and health (OHS/OSH): | |||
Main hazards |
Highly combustible, harmful | ||
GHS labelling: | |||
Warning | |||
H228, H317 | |||
P210, P240, P241, P261, P272, P280, P302+P352, P321, P333+P313, P363, P370+P378, P501 | |||
NFPA 704 (fire diamond) |
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Flash point | 250 °C (482 °F; 523 K) | ||
410 °C (770 °F; 683 K) | |||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references |
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