1,3-Propanediamine
A short, reactive C3 diamine whose three-carbon spacing between amine groups makes it a versatile building block across surfactant, polymer and crosslinking chemistry.
Chelora Chemicals supplies 1,3-propanediamine to surfactant, specialty-polymer and corrosion-inhibitor manufacturers worldwide, with full documentation on every consignment.
Product identity
- CAS Number
- 109-76-2
- IUPAC name
- Propane-1,3-diamine
- Molecular formula
- C₃H₁₀N₂
- Molecular weight
- 74.12 g/mol
- Boiling point
- 136-140 °C
- Melting point
- -12 °C
- UN Number
- UN 2922
- HS Code
- 2921 29*
* Confirm the current HS classification and import regulatory status for your destination with your own regulatory affairs team.
What 1,3-Propanediamine is used for
1,3-Propanediamine is a colourless to pale yellow, flammable liquid with a strong ammoniacal odour, carrying two primary amine groups spaced three carbons apart. That three-carbon spacing — one carbon longer than ethylenediamine's two-carbon backbone — gives it reactivity and ring-forming behaviour distinct from the shorter and longer diamines in our range.
Industrially, it is used as a building block in surfactant and specialty-polymer synthesis, as an intermediate in corrosion-inhibitor manufacture, and in chelating-agent and crosslinking chemistry, including select polyamide and polyurea formulations where its reactivity and chain length are a good fit.
Where it sits in the diamine family
- Ethylenediamine (EDA) C2 diamine — shorter chain, chelating-agent and epoxy chemistry workhorse. See that page.
- 1,3-Propanediamine (this product) C3 diamine — a versatile intermediate step between EDA and HMDA.
- Hexamethylenediamine (HMDA) C6 diamine — the nylon 6,6 monomer, much longer chain. See that page.
Appearance and handling character
1,3-Propanediamine is fatal if inhaled, harmful if swallowed, causes severe skin burns and eye damage, may cause an allergic skin reaction, and reacts violently with water — a hazard profile combining flammability and corrosivity that requires careful handling. Full hazard details are in the Safety section below.
| Parameter | Typical value |
|---|---|
| Appearance | Colourless to pale yellow liquid |
| Assay | 98.0% min |
| Water content | 0.5% max |
| Colour (Hazen) | 30 max |
Important: the figures above are indicative of commercial material and are offered for planning only. The batch certificate of analysis is the governing document.
| Property | Value |
|---|---|
| Physical state | Colourless to pale yellow liquid; strong ammoniacal odour |
| Boiling point | 136-140 °C |
| Melting point | -12 °C |
| Density | 0.888 g/mL |
| Water solubility | Fully miscible (reacts exothermically) |
| Amine class | Aliphatic C3 diamine |
Physical constants compiled from public reference data for CAS 109-76-2 and rounded for readability. Treat them as orientation, not as a specification.
Where our customers put this diamine to work
A short, reactive diamine spanning surfactant, polymer and corrosion-inhibitor chemistry.
Surfactant synthesis
A building block for amphoteric and cationic surfactants used across industrial and consumer formulations.
- Technical grade specification
- Bulk & drum supply
- Technical desk review on request
Specialty polymer synthesis
Used in select polyamide, polyurea and crosslinked-polymer chemistries requiring a short diamine spacer.
- Technical-grade specification
- Documented batch traceability
- Contract & spot supply
Corrosion-inhibitor intermediate
A precursor in certain corrosion-inhibitor and water-treatment formulations.
- Packs from 25 kg drum / bulk
- Full analytical documentation available
- Retained sample held against the lot
Chelating-agent building block
Used in the synthesis of certain metal-chelating agents and coordination compounds.
- Technical grade specification
- Documented batch traceability
- Technical desk review on request
Specialty synthesis & research
Used wherever a short, difunctional amine building block is required in process and research chemistry.
- Research & process-scale quantities
- Full documentation supplied
- Technical desk review on request
Contract & scheduled supply
Surfactant and specialty-chemical plants running continuous consumption are supported with scheduled bulk delivery.
- Annual contracts with scheduled call-off
- Price held across the contract period
- Second source held in reserve
How we supply 1,3-Propanediamine
Chelora Chemicals is a supplier and sourcing partner, not a manufacturer. This product's combined flammability and corrosivity means transport classification needs particular care — that shapes how we manage this line.
We place your order with whichever qualified producer best matches your required grade, your price point and your delivery window.
We keep a second qualified source on this line, so a single-plant disruption never becomes your production problem.
- Assay confirmed before we quote. Consistency matters to downstream polymer and surfactant performance.
- UN 2922 logistics managed end to end. Classification as a corrosive liquid with flammable subsidiary risk, confirmed before booking.
- Water-reactivity documentation filed correctly. Every shipment carries the correct hazard declarations.
- Scheduled call-off scheduling. We hold contracted tonnage and release it against your consumption calendar.
- Batch traceability to the producing plant. Full chain of custody documentation on request.
- Export machinery handled in-house. Classification, approved packing, labelling, freight booking and customs paperwork are ours to manage.
Packed the way your plant receives it
Drum, small pack or bulk tank — tell us your preferred format and we will quote and classify to it.
200 L / 55 USG
Standard steel drums rated for UN 2922-classified liquid storage and transport.
5-25 kg containers
For research, trial and lower-volume industrial orders.
Plant bulk volumes
Bulk liquid transport sized to continuous surfactant and specialty-chemical plant consumption.
Incoterms to suit you
Quoted on the Incoterm your purchasing team works to, with documentation filed before booking.
Trial / sample quantities
Small packs dispatched for process trials before a commercial order is placed.
Contracted call-off supply
We hold contracted tonnage and release it against your consumption calendar.
Flammable, corrosive, and reactive with water
1,3-Propanediamine's combination of flammability, corrosivity and water-reactivity makes ignition sources and containment the central handling concerns. The summary below is orientation only — the safety data sheet supplied with your specific batch is the authoritative document.
Classified hazards
H226Flammable liquid and vapour.H290May be corrosive to metals.H302Harmful if swallowed.H310Fatal in contact with skin.H314Causes severe skin burns and eye damage.H317May cause an allergic skin reaction.H334May cause allergy or asthma symptoms or breathing difficulties if inhaled.
Always read the SDS issued with your specific batch. Handle with chemical-resistant gloves, splash goggles, adequate ventilation and away from ignition sources.
Storage
Store in tightly closed containers in a cool, dry, well-ventilated area, away from heat, sparks, open flame and strong oxidisers. Keep away from water sources given its exothermic water reactivity.
Handling
Use with local exhaust ventilation and appropriate electrical bonding/grounding for a flammable liquid. Minimise skin and eye contact with appropriate gloves and protective clothing. Contain any spill and keep away from water and ignition sources.
Transport
Shipped as UN 2922, Class 8 (corrosive) with a flammable-liquid subsidiary hazard, Packing Group II. We confirm and document exact classification for your specific shipment and destination.
Every batch, documented
We verify documentation before dispatch so there are no surprises at your incoming-goods bench.
Specification agreed
Assay confirmed against your process requirement before order placement.
Producer batch testing
The producing plant tests each batch against the agreed specification before release.
Documentation review
COA, SDS and transport paperwork checked by our desk before the shipment is booked.
Traceable dispatch
Each shipment is traceable to its producing batch, with full chain-of-custody records on request.
How 1,3-propanediamine is made
1,3-Propanediamine is produced industrially through established amination routes common to short-chain aliphatic diamines, followed by distillation to the required purity.
We do not publish operating process parameters here; this is background only. Full technical and safety documentation accompanies every shipment, and any process-specific detail you need is best confirmed directly with our technical desk.
| Chemical family | Aliphatic C3 diamine |
|---|---|
| Nitrogen sites | Two primary amine groups |
| Reactivity | Difunctional nucleophile; flammable, corrosive, water-reactive |
| Related compounds | Ethylenediamine (shorter chain), Hexamethylenediamine (longer chain) |
Explore the wider amine range
1,3-Propanediamine, answered
What is 1,3-propanediamine used for?
How does 1,3-propanediamine differ from ethylenediamine?
Is 1,3-propanediamine hazardous?
What grade do you supply?
What packing do you offer?
Do you manufacture this yourself?
- Need a related amine? See our Ethylenediamine and Hexamethylenediamine pages.
Get a quote on 1,3-Propanediamine today
Send us your required grade, pack size and delivery window. We will come back with a firm quote, lead time and full documentation.