sec-Butylamine
Unusual among the butylamine isomers: sec-butylamine is itself a registered post-harvest fungicide, applied directly to citrus and pineapple to control Penicillium mould during storage and transport — alongside its role as a general pesticide-synthesis intermediate.
Chelora Chemicals supplies sec-butylamine to post-harvest treatment formulators and agrochemical manufacturers worldwide, with full GHS documentation on every consignment.
Product identity
- CAS Number
- 513-49-5
- IUPAC name
- Butan-2-amine
- Molecular formula
- C₄H₁₁N
- Molecular weight
- 73.14 g/mol
- Boiling point
- 63 °C
- UN Number
- 2733
- SMILES
- CCC(C)N
- HS Code
- 2921 19*
* Confirm the current HS classification, pesticide-registration status and import regulatory status for your destination with your own regulatory affairs team.
What sec-Butylamine is used for
sec-Butylamine is a colourless liquid with a fishy/ammoniacal odour, fully miscible with water, and chiral by structure — the amine sits on the second carbon of the butane chain. Commercial material is typically supplied as the racemic mixture rather than as a single enantiomer.
What sets it apart from the other three butylamine isomers is that it is not purely an intermediate: sec-butylamine (2-aminobutane) is itself registered and used directly as a post-harvest fungicide, applied as a treatment for citrus and pineapple to control Penicillium mould during storage and transport — a direct-use application that none of n-, iso- or tert-butylamine share. Beyond this, it also serves the more conventional role of a general pesticide-synthesis intermediate.
Where it sits among the butylamines
- n-Butylamine straight-chain, a broad-spectrum intermediate. See that page.
- Isobutylamine branched at the carbon adjacent to the amine. See that page.
- sec-Butylamine (this product) amine on the second carbon — the only butylamine isomer used directly as an active ingredient.
- tert-Butylamine fully branched at the amine-bearing carbon. See that page.
Appearance and handling character
sec-Butylamine is highly flammable and corrosive, and is classified as very toxic to aquatic life with long-lasting effects — a consideration worth flagging given its direct agricultural use.
| Parameter | Typical value |
|---|---|
| Appearance | Colourless liquid, fishy/ammoniacal odour |
| Assay | 99.0% min |
| Form supplied | Racemic mixture (standard) |
| Water content | 0.3% max |
| Non-volatile residue | 0.05% 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. Confirm pesticide-registration requirements for your jurisdiction before purchase if used as a direct fungicide treatment.
| Property | Value |
|---|---|
| Physical state | Liquid at room temperature |
| Boiling point | 63 °C |
| Melting point | -104.50 °C |
| Density (20 °C) | 0.724 g/cm³ |
| Water solubility | Fully miscible |
| Basicity | Strong base, typical of primary alkylamines |
Physical constants compiled from public reference data for CAS 513-49-5 and rounded for readability. Treat them as orientation, not as a specification.
Where our customers put this amine to work
An amine with a dual identity — a direct-use fungicide on one hand, a conventional synthesis intermediate on the other.
Post-harvest citrus fungicide
Applied directly as a treatment for citrus fruit to control Penicillium mould during storage and transport.
- Technical-grade specification
- Registration-ready documentation
- Technical desk review on request
Post-harvest pineapple fungicide
Also applied to pineapple as a post-harvest treatment against the same mould pathogen.
- Multiple pack sizes available
- Full analytical documentation
- Small quantities for trials
Pesticide-synthesis intermediate
Used more generally as a nitrogen building block feeding into other pesticide active-ingredient routes.
- Technical-grade specification
- Contracted annual tonnage supported
- Bulk tank or drum supply
General organic synthesis
A chiral-centre-bearing primary amine useful across specialty and fine-chemical research.
- Research and process-scale quantities
- High-purity grade available on request
- Technical documentation supplied
Research & analytical use
Small liquid quantities for method development and process research.
- Packs from 1 L / 5 L
- Full analytical documentation available
- Retained sample held against the lot
Contract & scheduled supply
Post-harvest formulators running seasonal packhouse campaigns are supported with scheduled call-off tonnage.
- Annual contracts with scheduled call-off
- Price held across the contract period
- Second source held in reserve
How we supply sec-Butylamine
Chelora Chemicals is a supplier and sourcing partner, not a manufacturer. With four butylamine isomers in common commercial use, and this one carrying its own direct agricultural-use status, getting the right specification and documentation together is the first thing we check.
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.
- Isomer confirmed before we quote. n-, iso-, sec- and tert-butylamine are not interchangeable in downstream chemistry.
- Registration documentation available. For post-harvest fungicide use, we can support the paperwork your packhouse needs.
- Dangerous-goods documentation filed correctly. Class 3 with a Class 8 subsidiary risk needs both hazard sets declared accurately.
- Seasonal call-off scheduling. We hold contracted tonnage and release it against your packhouse production 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, IBC or bulk — tell us your preferred format and we will quote and classify to it.
200 L / 55 USG
Standard UN-approved steel drums for corrosive flammable liquids, the usual choice for most orders.
Intermediate bulk containers
For mid-volume orders where drum handling becomes a logistics burden.
High-volume contracts
Bulk liquid transport for packhouse-scale continuous consumption on long-term supply agreements.
Incoterms to suit you
Quoted on the Incoterm your purchasing team works to, with dangerous-goods 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 seasonal production calendar.
Flammable, corrosive, and very toxic to aquatic life
sec-Butylamine's direct agricultural use makes its environmental hazard classification especially relevant. The summary below is orientation only — the safety data sheet supplied with your specific batch is the authoritative document.
Classified hazards
H225Highly flammable liquid and vapour.H302Harmful if swallowed.H314Causes severe skin burns and eye damage.H332Harmful if inhaled.H400Very toxic to aquatic life.
Always read the SDS issued with your specific batch. Handle with chemical-resistant gloves, splash goggles and adequate ventilation; prevent any release to waterways given its aquatic-toxicity classification.
Storage
Store in tightly closed, corrosion-resistant containers in a cool, well-ventilated area away from heat, sparks, open flame and oxidisers, and away from drains or watercourses.
Handling
Use with local exhaust ventilation. Ground and bond containers during transfer to control static discharge in a flammable-vapour environment. Contain any spill to prevent aquatic contamination.
Transport
Ships as UN 2733, typically Class 3 (flammable liquid) with a Class 8 (corrosive) subsidiary risk. We confirm and document packing group and 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 and racemic/enantiopure form confirmed against your requirement before order placement.
Producer batch testing
The producing plant tests each batch against the agreed specification before release.
Documentation review
COA, SDS and dangerous-goods 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 sec-butylamine is made
sec-Butylamine is produced industrially by the catalytic amination of sec-butanol with ammonia, a standard industrial route for this branched primary alkylamine. Commercial production typically yields the racemic mixture rather than a single enantiomer.
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 | Primary aliphatic amine, chiral (C4) |
|---|---|
| Basic character | Strong base, typical of primary alkylamines |
| Reactivity | Nucleophilic nitrogen; also a direct-use fungicidal active ingredient |
| Structural isomers | n-Butylamine, isobutylamine, tert-butylamine |
Explore the wider amine range
sec-Butylamine, answered
What is sec-butylamine used for?
What CAS number applies?
Is sec-butylamine hazardous?
What is the UN transport classification?
What grade do you supply?
Do you manufacture this yourself?
- Need a related isomer? See our n-Butylamine and tert-Butylamine pages.
Get a quote on sec-Butylamine today
Send us your required grade, pack size and delivery window. We will come back with a firm quote, lead time and full documentation.