Everything a purchasing department, a QA lab and a goods-in supervisor need to agree on before the first pallet arrives.
The material you receive from us is hexamethylenetetramine. Depending on the market, the decade and the industry, the same white powder is ordered as urotropine, hexamine, methenamine, formin, aminoform or simply HMTA. Central European purchase orders typically say urotropina; English-language technical standards say hexamine.
Structurally it is a cage of four nitrogen atoms joined by six methylene bridges — a symmetrical, tension-free arrangement that explains its stability as a solid and its willingness to release formaldehyde once heated or acidified. It is manufactured by reacting formaldehyde with ammonia in aqueous solution, then crystallising and drying the product.
| IUPAC name | 1,3,5,7-Tetraazaadamantane |
|---|---|
| Common names | Hexamine, urotropine, methenamine, HMTA, formin, aminoform |
| Molecular formula | C₆H₁₂N₄ |
| Molar mass | 140.19 g/mol |
| CAS number | 100-97-0 |
| EC number | 202-905-8 |
| REACH registration | 01-2119474895-20-XXXX |
| CN / customs code | 2933 69 40 |
| Food additive code | E239 (EU use restricted — see below) |
The figures below describe our standard technical grade. Every consignment ships with a batch-specific Certificate of Analysis carrying the actual measured values.
| Parameter | Specification |
|---|---|
| Assay (as C₆H₁₂N₄, dry basis) | min. 99.3 % |
| Moisture (Karl Fischer) | max. 0.3 % |
| Ash (sulphated) | max. 0.03 % |
| Ammonium salts | max. 0.05 % |
| Chlorides (Cl⁻) | max. 0.02 % |
| Sulphates (SO₄²⁻) | max. 0.02 % |
| Heavy metals (as Pb) | max. 5 ppm |
| pH, 10 % aqueous solution | 7.5 – 9.0 |
| Property | Value |
|---|---|
| Appearance | White crystalline powder or granules |
| Odour | Faint, ammonia-like |
| Density (20 °C) | 1.33 g/cm³ |
| Bulk density | approx. 0.4 – 0.7 g/cm³ (form-dependent) |
| Sublimation | approx. 280 °C, decomposes without melting |
| Solubility in water (20 °C) | approx. 85 g / 100 ml |
| Solubility, organics | Soluble in ethanol, methanol, chloroform-free polar solvents; practically insoluble in petrol and diethyl ether |
| Flash point | approx. 250 °C (flammable solid) |
Values are typical and given in good faith for orientation. They do not constitute a contractual guarantee; the binding figures are those on the Certificate of Analysis and the agreed specification sheet for your order.
The two grades are chemically the same compound. What differs is whether a small stabilising additive has been included to protect the material during long or humid storage.
The default for chemistry that cannot tolerate a foreign component. Used in phenolic resin hardening, rubber compounding and as a synthesis intermediate, where an additive would show up in the final product or interfere with the reaction.
Carries a small quantity of a stabilising agent that suppresses caking and the gradual decomposition that humidity and warmth can cause. Chosen where material sits in a warehouse for months, travels by sea, or is pressed into fuel tablets.
Every format below is available from stock or on a short lead time. If your line needs something else — a specific liner, a non-standard pallet pattern, a private label — say so in the enquiry.
| Format | Net weight | Typical use |
|---|---|---|
| PE or multi-layer paper bag | 25 kg | Manual dosing, small batches |
| Palletised bags | 1000 kg / pallet | Regular production supply |
| FIBC big bag | 500 / 1000 kg | Silo and hopper feeding |
| Fibre or plastic drum | on request | Regulated or sensitive volumes |
| ISO container | up to 24 t | Sea freight, bulk contracts |
Hexamine is straightforward to work with, provided two properties are respected: it burns, and repeated skin contact can sensitise. Everything below is summary information — the Safety Data Sheet is the authoritative document.
A delivery that cannot be released by your QA department is not a delivery. We send the document set for review ahead of dispatch, so goods-in is a formality rather than a negotiation.
The agreed parameter set your order will be checked against.
Batch-specific, with measured values and the batch number that appears on the packaging.
Current version, in the language of the receiving country, carrying the REACH registration number.
ADR-compliant paperwork and labelling for UN 1328, prepared for the chosen route.
Send us your company details and intended use and we will return the specification and current Safety Data Sheet — normally the same working day.
Monday to Friday, 08:00–16:00 CET.
Grade, tonnage, packaging and delivery address — that is all we need to come back with a firm offer.
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