HEXAMETHLENE TETRAMINE

Hexamethlene Tetramine is a white, crystalline heterocyclic compound with a cage-like structure used in producing phenolic resins, explosives, and as a urinary tract antibiotic. 
Hexamethlene Tetramine acts as a fuel source (solid fuel tablets), stabilizer, and chemical intermediate, produced by reacting ammonia with formaldehyde.
Hexamethlene Tetramine, also known as 1,3,5,7-tetraazaadamantane, is a heterocyclic organic compound with diverse applications.

CAS Number: 100-97-0
Molecular Formula: C6H12N4
Formula Weight: 140.19

Synonyms: methenamine, Hexamethylenetetramine, Hexamine, Urotropine, Urotropin, 1,3,5,7-Tetraazaadamantane, Uritone, HMTA, Hexamethylenamine, Formamine, Hexamethylene tetramine, Methenamin, Ammoform, Cystamin, Cystogen, Ammonioformaldehyde, Formin, Aceto HMT, Hexamethylenetetraamine, Aminoformaldehyde, Preparation AF, Antihydral, Duirexol, Hexaform, Metenamina, Resotropin, Uratrine, Urodeine, Xametrin, Heterin, Uramin, Hexamethyleneamine, Hexilmethylenamine, Hexa-Flo-Pulver, Ekagom H, methenaminum, Hexaminum, Herax UTS, Hexamethylentetramin, Nocceler H, Sanceler H, Formin heterocycle, Hexamine heterocycle, Vulkacit H 30, Hexamethylentetraminum, 1,3,5,7-Tetraazatricyclo[3.3.1.13,7]decane, S 4 heterocycle, Hexamethylenetetraminum, Esametilentetramina, Methamin, Hexa vulcanization accelerator, Urisol, 1,3,5,7-Tetraazatricyclo(3.3.1.13,7)decane, 1,3,5,7-Tetraazatricyclo[3.3.1.1(3,7)]decane, Urasal, Aminoform, Hexaloids, Metramine, Hexasan, Metenamine, Uro-phosphate, 1,3,5,7-tetraazatricyclo[3.3.1.1~3,7~]decane, Vesaloin, HMT, 1,3,5,7-Tetraazatricyclo (3.3.1.1(3,7))decane, MFCD00006895, Hexamine JAN, Hexamine TN, 1,3,5,7-tetrazatricyclo[3.3.1.13,7]decane, Hexamethylenetetramine aliphatic, Methenamine USP INN, H.M.T., Formin the heterocyclic compound, 1,3,5,7-tetraazatricyclo[3.3.1.1?,?]decane, NSC26346, 1,3,5,7-Tetraazatricyclo(3.3.1.1(sup 3,7))decane, Hexamine Superfine, Methenamine USAN INN, Sanceler HT, Metenamina INN Spanish, Methenaminum INN Latin, Heksa K, Hexa B, Esametilentetramina Italian, Hexamethylentetramin German, hexamethylene tetramine, hexam-ethylenetetraamine, Formaldehyde ammonia 6:4, Adamazane, Hexamethylenetetramine tech, Hexamethylenetetramine ACS, formin[heterocycle], Grasselerator 102, Herax UTS, heraxuts, Heterin, Hexa-Flo, Pulver, Hexaform, Hexaloids

Hexamethlene Tetramine has the chemical formula (CH2)6N4 and is a white crystalline compound that is highly soluble in water and polar organic solvents. 
Hexamethlene Tetramine is useful in the synthesis of other organic compounds, including plastics, pharmaceuticals, explosives, and rubber additives.
The compound is also used medically for certain conditions.

Hexamethlene Tetramine sublimes in vacuum at 280 °C. 
Hexamethlene Tetramine has a tetrahedral cage-like structure similar to adamantane.
The four vertices are occupied by nitrogen atoms, which are linked by methylene groups. 

Although the molecular shape defines a cage, no void space is available at the interior.
Hexamethlene Tetramine is a heterocyclic organic compound, widely used as a curing agent, fuel additive, and pharmaceutical antiseptic.
Hexamethlene Tetramines chemical formula is C₆H₁₂N₄.

Hexamethlene Tetramine belongs to the class of amine-based cage compounds.
Chemically, it consists of a cage-like structure formed by condensation of formaldehyde and ammonia.
It contains four nitrogen atoms in a symmetrical framework.

This gives it unique stability and reactivity.
Physically, hexamethylenetetramine appears as a white crystalline solid.
Hexamethlene Tetramine is soluble in water and polar solvents.

It has a mild amine-like odor.
The compound exhibits basic properties due to the presence of nitrogen atoms with lone pairs.
Hexamethlene Tetramine can form salts with acids.

Hexamethlene Tetramine is chemically stable under neutral and basic conditions, but decomposes in acidic environments.
It releases formaldehyde and ammonia upon decomposition.
This behavior is key to its applications.

It functions as a source of formaldehyde under controlled conditions, especially in acidic media.
This makes it useful in resins and antimicrobial applications.
It provides controlled reactivity.

Hexamethlene Tetramine is used in industrial, pharmaceutical, and chemical processes due to its versatility.
It participates in polymer curing and antiseptic action.
Hexamethlene Tetramine is best described as a stable, cage-structured amine compound that can release formaldehyde under acidic conditions, widely used in curing, fuel, and medical applications.

Hexamethlene Tetramine exhibits high nitrogen content (~40%), which contributes to its reactivity in nitrogen-based systems.
This makes it useful in certain energetic and resin applications.
Hexamethlene Tetramine supports specialized chemical processes.

Hexamethlene Tetramine shows clean combustion behavior, producing mainly carbon dioxide, water, and nitrogen.
Hexamethlene Tetramine burns with a relatively smokeless flame.
This is important for fuel uses.

Hexamethlene Tetramine demonstrates good compatibility with resins and polymer systems, especially phenolic resins.
Hexamethlene Tetramine acts as a crosslinking agent upon decomposition.
This improves mechanical properties.

Hexamethlene Tetramine has low hygroscopicity compared to many amines, meaning it does not readily absorb moisture from air.
This enhances storage stability.
Hexamethlene Tetramine maintains solid form under normal conditions.

Melting point: 280 °C (subl.) (lit.)
Boiling point: 246.7°C (rough estimate)
Density: 1.33
bulk density: 600 kg/m³
vapor density: 4.9 (vs air)
vapor pressure: <0.01 mm Hg (20 °C)
refractive index: 1.4260 (estimate)
Flash point: 482 °F
storage temp.: Store below +30°C
solubility: H2O: 1 M at 20 °C, clear, colorless
form: Solid
pKa: 5.1 (at 25℃)
color: white
Odor: Odorless
pH: 7–10 (100 g/L, H2O, 20℃)
Water Solubility: 895 g/L (20 ºC)
Sensitive: Hygroscopic
Merck: 14,5966
Sublimation: 263–295 ºC

Hexamethlene Tetramine was first introduced into the medical setting in 1895 as a urinary antiseptic.
Hexamethlene Tetramine was officially approved by the FDA for medical use in the United States in 1967.
However, it was only used in cases of acidic urine, whereas boric acid was used to treat urinary tract infections with alkaline urine.

Scientist De Eds found that there was a direct correlation between the acidity of hexamethylenetetramine's environment and the rate of its decomposition.
Therefore, its effectiveness as a drug depended greatly on the acidity of the urine rather than the amount of the drug administered.
In an alkaline environment, Hexamethlene Tetramine was found to be almost completely inactive.

Hexamethlene Tetramine has a highly symmetrical cage-like (adamantane-type) structure, which gives it notable thermal and chemical stability.
This structure reduces reactivity under neutral conditions.
Hexamethlene Tetramine contributes to its solid crystalline form.

Hexamethlene Tetramine is formed through a condensation reaction between formaldehyde and ammonia, resulting in a cyclic amine network.
This synthesis is efficient and widely used industrially.
Hexamethlene Tetramine enables large-scale production.

Hexamethlene Tetramine exhibits low volatility and relatively high sublimation behavior, meaning it can transition directly from solid to vapor when heated.
This property is important in fuel applications.
Hexamethlene Tetramine allows clean burning.

Hexamethlene Tetramine acts as a latent formaldehyde donor, releasing formaldehyde only under acidic or high-temperature conditions.
This controlled release is useful in resins and antimicrobial systems.
Hexamethlene Tetramine provides targeted functionality.

The molecule shows good solubility in water, forming neutral to slightly basic solutions.
Hexamethlene Tetramine can also dissolve in alcohols.
This supports formulation flexibility.

Hexamethlene Tetramine can participate in coordination with acids to form salts, such as methenamine hippurate.
These salts are used in pharmaceutical applications.
They enhance functionality.

Hexamethlene Tetramine is stable during storage under dry, neutral conditions, but sensitive to strong acids.
Acidic environments trigger decomposition.
Proper storage conditions are important.

Hexamethlene Tetramine is often used in controlled chemical reactions where gradual release of reactive species is needed.
It provides predictable behavior.
This supports industrial and laboratory processes.

Hexamethlene Tetramine is a stable, cage-structured compound with controlled reactivity, sublimation properties, and formaldehyde-releasing capability, making it valuable in industrial, pharmaceutical, and fuel-related applications.
Hexamethlene Tetramine can influence curing kinetics in thermosetting systems, providing controlled crosslinking rates.
It helps achieve uniform network formation.

Hexamethlene Tetramine can participate in slow-release antimicrobial systems, due to its ability to generate formaldehyde in acidic environments.
This provides controlled activity.
Hexamethlene Tetramine is useful in specific applications.

Hexamethlene Tetramine exhibits good shelf stability under dry conditions, with minimal degradation over time.
However, exposure to acids or moisture can initiate decomposition.
Because of its defined structure, it is often used in analytical and research applications as a model compound.

Hexamethlene Tetramine provides predictable behavior in studies.
This aids scientific investigation.
Hexamethlene Tetramine is a nitrogen-rich, stable compound with clean combustion, controlled decomposition, and crosslinking capabilities, making it valuable in resins, fuels, and chemical systems.

Uses Of Hexamethlene Tetramine:
Hexamethlene Tetramine is widely used as a curing agent in phenolic resins.
It releases formaldehyde under heat or acidic conditions.
This enables crosslinking and hardening of resins.

In solid fuel tablets (hexamine fuel), it is used as a compact energy source.
Hexamethlene Tetramine burns cleanly with minimal smoke.
This makes it suitable for camping and military use.

Hexamethlene Tetramine is used in pharmaceutical applications, particularly as a urinary antiseptic (e.g., methenamine salts).
Hexamethlene Tetramine releases formaldehyde in acidic urine.
This helps control bacterial infections.

In explosives and energetic materials, it is used as a precursor or component (e.g., in RDX production).
Its nitrogen-rich structure is important.
This supports chemical synthesis of energetic compounds.

Hexamethlene Tetramine is applied in rubber and polymer processing as a curing and crosslinking agent.
It improves mechanical strength and durability.
This enhances material performance.

Hexamethlene Tetramine is used in corrosion inhibitors and metal treatment formulations.
It helps protect metal surfaces.
This improves resistance to degradation.

In textile and leather processing, it functions as a crosslinking or finishing agent.
Hexamethlene Tetramine improves material properties.
This enhances durability.

Hexamethlene Tetramine is applied in coatings and adhesives as a hardening agent.
It supports formation of strong polymer networks.
This improves bonding performance.

Hexamethlene Tetramine is also used in laboratory synthesis and analytical chemistry as a reagent or intermediate.
It participates in controlled reactions.
Hexamethlene Tetramine is used wherever controlled formaldehyde release, curing, fuel energy, and nitrogen-based reactivity are required across resins, pharmaceuticals, fuels, and chemical industries.

Hexamethlene Tetramine is used in foundry applications, particularly in sand molding resins.
Hexamethlene Tetramine acts as a curing agent for binder systems.
This improves mold strength and stability.

In friction materials, such as brake linings and clutch facings, it is used as a crosslinking agent.
Hexamethlene Tetramine enhances heat resistance and mechanical strength.
This improves performance under stress.

Hexamethlene Tetramine is applied in insulation materials and laminates based on phenolic resins.
It helps form rigid, heat-resistant structures.
This supports electrical and thermal insulation.

Hexamethlene Tetramine is used in tablet fuels for laboratory heating and portable stoves.
Hexamethlene Tetramine provides a compact and efficient heat source.
This is useful in field and laboratory settings.

In agricultural chemicals, it may be used as an intermediate or stabilizing component.
It helps control reactivity in formulations.
This supports chemical processing.

Hexamethlene Tetramine is applied in antimicrobial coatings and preservatives where controlled formaldehyde release is needed.
It inhibits microbial growth.
This improves material durability.

Hexamethlene Tetramine is used in plastic molding compounds, especially thermosetting plastics.
It facilitates crosslinking reactions.
This enhances structural properties.

In smoke-generating and pyrotechnic compositions, it can act as a fuel or component.
Hexamethlene Tetramine contributes to controlled combustion.
This supports specialized applications.

Hexamethlene Tetramine is also used in buffer and reagent systems in laboratories, due to its basic and stable nature.
It helps control reaction environments.
Hexamethlene Tetramine is used wherever controlled curing, clean-burning fuel, antimicrobial action, and nitrogen-based reactivity are required across industrial, laboratory, and specialty applications.

Safety Profile Of Hexamethlene Tetramine:
Hexamethlene Tetramine presents moderate hazards, mainly due to its ability to release formaldehyde under acidic or heated conditions, and its flammability as a solid fuel.
Hexamethlene Tetramine is generally stable but can become hazardous under certain conditions.
Proper handling is required.

Skin contact may cause mild irritation, especially with prolonged exposure.
In some cases, sensitivity reactions may occur.
Protective gloves are recommended.

Eye contact can cause irritation and discomfort.
Symptoms include redness and watering.
Eyes should be rinsed thoroughly with water if exposure occurs.

Inhalation of dust may cause respiratory irritation.
Symptoms can include coughing or throat discomfort.
Adequate ventilation and dust control are important.

Ingestion may cause gastrointestinal irritation and systemic effects.
Hexamethlene Tetramine may also lead to release of formaldehyde in acidic conditions.
Medical attention should be sought if swallowed.

Hexamethlene Tetramine is a flammable solid, especially when used as fuel tablets.
It burns with a steady flame.
Hexamethlene Tetramine should be kept away from ignition sources.

The compound is chemically stable under neutral conditions, but decomposes in acids or when heated.
Decomposition releases formaldehyde and ammonia, which are hazardous.
Thermal decomposition or combustion may produce toxic fumes, including formaldehyde, nitrogen oxides, and carbon oxides.