Molekula
Hexamine (Crystalline)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Hexamine (Crystalline), also called hexamethylenetetramine, is a white crystalline solid primarily used as a fuel additive, in resin production, and as a chemical intermediate for adhesives, pharmaceuticals, and water treatment. It is also used in foundry molding and core making, and under the name methenamine it is used as a urinary antibacterial drug. This chemical has a CAS number of 100-97-0, with the molecular formula C6H12N4 and a molecular weight of 140.19. It is safely stored at ambient conditions but carries a signal word of "Warning" due to its potential hazards. Molekula supplies Hexamine (Crystalline) from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White to colourless crystalline solid |
| Water | ≤0.5% |
| Ash | ≤0.05% |
| Assay | ≥99.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 250 °C |
| Transport Class | 4.1 |
| Packing Group | III |
| Acidity | Base |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Colorless crystalline solid |
| Odour | Odorless |
| Melting Point | 280 °C (sublimes) |
| Density | 1.3394 g/cm³ at 22 °C |
| Solubility (other solvents) | Freely soluble in water; practically insoluble in petroleum ether |
| Vapour Pressure | 6.1 × 10⁻⁴ mmHg at 25 °C |
| Refractive Index | 1.590 |
| pKa | pKa = 4.89 |
| log P (octanol/water) | -2.18 |
Source: PubChem CID 4101 (HSDB, CAMEO Chemicals)
Identification
| Property | Value |
|---|---|
| SKU | 90023464 |
| CAS Number | 100-97-0 |
| IUPAC Name | 1,3,5,7-tetrazatricyclo[3.3.1.13,7]decane |
| EC Number | 202-905-8 |
| Molecular Formula | C6H12N4 |
| Molecular Weight | 140.19 |
| Exact Mass | 140.1062 |
| SMILES | C1N2CN3CN1CN(C2)C3 |
| InChIKey | VKYKSIONXSXAKP-UHFFFAOYSA-N |
| InChI | InChI=1S/C6H12N4/c1-7-2-9-4-8(1)5-10(3-7)6-9/h1-6H2 |
| PubChem CID | 4101 |
| UN Number | UN1328 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2933.69.50.00 |
| Tariff Code | 2933694000 |
Safety & GHS
-
Flammable
GHS02
-
Health Hazard
GHS07
Hazard statements
- H228 Flammable solid
- H317 May cause an allergic skin reaction
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P232 Protect from moisture
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- 1,3,5,7-Tetraazaadamantane
- Formamine
- Hexamethylenamine
- Hexamethylenetetramine
- Hexamine
- HMTA
- methenamine
- Uritone
- Urotropin
- Urotropine
Frequently asked questions
What is hexamine (crystalline) commonly used for?
Hexamine is primarily used as a cross-linking agent for phenolic resins, as a vulcanization accelerator in rubber processing, and as the starting material for the foaming agent dinitrosopentamethylenetetramine (DNPT). It also serves as a fuel tablet for camping stoves and in chemical synthesis.
What is the chemical formula and molecular weight of hexamine?
The chemical formula is C6H12N4, and the molecular weight is 140.19 g/mol.
How should hexamine (crystalline) be stored?
Store hexamine at ambient temperature in a cool, dry, and well-ventilated area, away from sources of ignition or incompatible substances.
What grades or purity levels of hexamine does Molekula supply?
Molekula supplies hexamine (crystalline) with an assay of ≥99.0%.
Can Molekula supply hexamine in bulk quantities?
Yes, Molekula can supply hexamine in bulk quantities, including drums (25 kg) and larger custom packaging upon request.
What documentation comes with a hexamine order?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS/SDS), and packing list. Additional documentation, such as a Certificate of Origin, may be provided upon request.
Is Hexamine (Crystalline) dangerous goods for shipping?
Yes. Hexamine (Crystalline) ships as dangerous goods: UN1328, class 4.1, packing group III.
Ready to order or need a custom pack?
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