Molekula
Hexamine (Crystalline)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · 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 serves as a nitrogen source in gas welding and soldering fluxes, 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.
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 blowing agent for foamed plastics, a cross-linking agent for phenolic resins, and as a vulcanization accelerator in rubber processing. 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 technical-grade hexamine (crystalline), typically with a purity of ≥99%.
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.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.