|
HS Code |
744583 |
| Chemical Name | 1,8-Diaminooctane |
| Synonyms | Octamethylenediamine |
| Molecular Formula | C8H20N2 |
| Molar Mass | 144.26 g/mol |
| Cas Number | 373-44-4 |
| Appearance | White to off-white solid |
| Melting Point | 47-50 °C |
| Boiling Point | 260 °C |
| Density | 0.876 g/cm³ |
| Solubility In Water | Slightly soluble |
| Pka | around 10.7 (primary amine) |
| Odor | Ammonia-like |
| Flash Point | 130 °C (closed cup) |
| Refractive Index | 1.447 |
| Purity | Typically ≥98% |
As an accredited 1,8-Diaminooctane factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | 1,8-Diaminooctane, 100g, is packaged in a sealed amber glass bottle with a secure screw cap and chemical hazard labeling. |
| Shipping | **Shipping Description for 1,8-Diaminooctane:** 1,8-Diaminooctane should be shipped in tightly sealed containers, protected from moisture and incompatible materials. It must comply with relevant transport regulations, typically classified as corrosive. Ensure proper labeling and documentation. Store in a cool, dry place, and handle with gloves and eye protection to prevent skin or eye contact during shipping and handling. |
| Storage | 1,8-Diaminooctane should be stored in a tightly sealed container in a cool, dry, and well-ventilated area, away from heat, moisture, and incompatible substances such as strong oxidizers. Protect from physical damage and direct sunlight. Ensure proper labeling and restrict access to trained personnel. Use appropriate chemical storage cabinetry, preferably made of materials resistant to amines, to prevent corrosive interactions. |
Applications of 1,8-Diaminooctane in Industrial Manufacturing1,8-Diaminooctane plays a key role as a building block and functional intermediate in multiple specialty and polymer sectors. Our production experience confirms its consistent performance across critical industrial operations, addressing unique technical demands for downstream formulation, compliance, and end product quality. 1. Polyamide and Nylon-8,8 Engineering PlasticsIn advanced polymerization, 1,8-Diaminooctane reacts with sebacic acid or other long-chain dicarboxylic acids to generate specialty polyamides, such as Nylon-8,8. Strict monomer purity supports polymerization stability, influencing molecular weight distribution and mechanical strength. Formulation targets precise diamine-to-diacid stoichiometry, with ongoing QC monitoring for thermal and mechanical requirements in applications including automotive components and electrical insulators. Consistent feedstock quality ensures batch-to-batch reproducibility, vital for enforcing downstream extrusion and molding tolerances. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
2. Specialty Polyurethane SystemsPolyurethane manufacturers select 1,8-Diaminooctane as an effective chain extender for producing flexible foams and high-elongation elastomers. The diamine structure modifies backbone flexibility, controlling phase separation and mechanical response. Processing requires precise introduction post prepolymer completion; undiluted or diluted with glycol depending on targeted elasticity. Application-specific grades must undergo full trace analysis to eliminate residual amines or solvents, supporting downstream product safety for furniture, footwear, and certain medical device components. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
3. Epoxy Curing Agent FormulationsAs an aliphatic diamine hardener, 1,8-Diaminooctane finds use in high-flexibility, low-yellowing epoxy curing systems. Its linear eight-carbon backbone imparts flexibility and chemical resistance, especially in flooring, metal coatings, and composites needing extended working times. Formulators optimize addition order and blend ratio with epoxide equivalents for controlled gelation, while full documentation on residual solvent and secondary amine content meets regulatory requirements in flooring or anhydride blend systems. Comprehensive raw material certification supports system consistency and end-user compliance. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
4. Organic Synthesis Intermediate for Pharmaceutical ManufacturingPharmaceutical manufacturers use 1,8-Diaminooctane as a protected or free-base intermediate in production of active pharmaceutical ingredients (APIs) and high-purity excipients. Its long-chain structure supports linker, spacer, or salt-forming reactions, frequently within cGMP-compliant, multi-step pathways. QC programs include full chiral impurity, heavy metal, and residual solvent profiling. Manufacturers implement traceability from lot receipt through to API or excipient registration dossier, supporting regulatory requirements for worldwide distribution. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
5. Corrosion Inhibitor Additives for Water TreatmentIn industrial water treatment, 1,8-Diaminooctane functions as a corrosion inhibitor component by chelating metal ions and forming adsorptive films on ferrous surfaces within piping, cooling towers, and boilers. Our experienced QA/QC teams monitor for aminic purity and ionic contaminant levels to assure environmental discharge compliance and product performance. Use parameters depend on system pH, water composition, and operational stress, with ongoing titration and field testing required by most plant operators to maintain long-term protection. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
|
Competitive 1,8-Diaminooctane prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please call us at +8615371019725 or mail to sales7@sinochem-nanjing.com.
We will respond to you as soon as possible.
Tel: +8615371019725
Email: sales7@sinochem-nanjing.com
Flexible payment, competitive price, premium service - Inquire now!
As a dedicated manufacturer who has been working with aliphatic diamines for years, we know 1,8-Diaminooctane stands out in both quality and versatility. Chemists recognize its utility because of its straight-chain structure – eight carbons give just the right balance of molecular flexibility and reactivity. From our vantage point inside the plant, each metric ton produced reflects years of process refinement, equipment upgrades, and in-depth understanding of diamine chemistry. The octamethylene chain, flanked by terminal amine groups, unlocks opportunities for customers aiming to synthesize specialty polymers or modify surfaces.
Every batch of 1,8-Diaminooctane we make passes through rigorous in-house testing. We keep impurities such as omega-haloamines, residual solvents, and low-molecular byproducts below strict thresholds. This isn’t just a regulatory checkbox — our strict control means less downstream troubleshooting for formulators and manufacturers. When you open a drum or bag from us, what you get is a clear or slightly yellowish, solid, wax-like material that melts just above room temperature. That melting point matters; it gives our material a certain manageability compared to shorter diamines, yet won’t introduce processing headaches found with much longer analogs.
We routinely achieve purity levels above 99% according to gas chromatography. Moisture content stays below 0.30%, as measured by Karl Fischer analysis. Our 1,8-Diaminooctane has a melting point very close to 48–50°C, so it remains solid at ambient temperature, which many plastic and fiber plants appreciate for stable transportation and storage. The crystalline solid breaks apart with moderate force, which practical plant managers find facilitates handling in blending, extrusion, or compounding operations.
The amine number sits predictably around 26.8 mg KOH/g; this reflects the accurate and consistent presence of both terminal amino groups. That’s not just a number on a spec sheet; it defines the material’s core reactivity in downstream curing, chain extension, or crosslinking applications. Packing the product in polyethylene-lined drums, we never compromise on protection from moisture and atmospheric CO2, both of which can cause carbamate formation and reduce the batch quality over time.
Walking through plants that depend on our 1,8-Diaminooctane, we see the compound used in polyamide synthesis, especially for PA 8,8 fibers and resins. The chain length leads to lower water absorption and higher resistance to solvents compared to shorter-chain aliphatic diamines like hexamethylenediamine. That’s a decisive advantage if you’re looking for strong, resilient materials that retain dimensional stability even in humid conditions. We’ve seen customers in the specialty rubber sector use this diamine for making custom elastomers with finely tuned flexibility.
The other role we frequently support involves epoxy curing. 1,8-Diaminooctane, as a hardener, delivers a unique balance of flexibility and toughness, leading to final materials that do not turn overly brittle. Coating manufacturers rely on this to produce anti-corrosive adhesives and composites able to endure dynamic stresses. Its relatively low vapor pressure at working temperatures means safer and more comfortable processor environments, a point not lost on our teams during bulk handling and batching.
Specialty chemical firms have also told us about using our 1,8-Diaminooctane for building complex organic molecules, where its spacing between amine groups helps steer reaction selectivity. In surface-modification, the molecule becomes a key linker, grafting active groups onto minerals, pigments, or nanomaterials. Every time a researcher comes to us with a new application, we dig into their technical needs and production aims, because the way we treat this diamine at every stage — from hydrogenation to filtration, crystallization to packaging — tailors its end-use potential.
Ask any industrial chemist, and they’ll tell you not all diamines behave the same way. Hexamethylenediamine, with six carbon atoms, brings higher melting points and a tendency to make more rigid polymers. The extra two carbons in 1,8-Diaminooctane lower the final materials’ glass transition temperature, lending flexibility without throwing durability out the window. From our side, adjusting pressure, hydrogen input, and choice of catalysts lets us reliably produce a cleaner, less odorous product compared to lower homologs.
Take decamethylenediamine, where ten carbons often tip polymers toward softness, sometimes at the expense of toughness or solvent resistance. Our experience as large-scale producers reveals 1,8-Diaminooctane works right in the sweet spot. It can crosslink or extend chains without creating unmanageable processing viscosity or introducing unwanted plasticization.
We also support ongoing academic collaborations, and in independent testing, our 1,8-Diaminooctane shows more predictable amine-end reactivity than branched analogs. Its linear structure means fewer steric effects and side reactions, which improves yield and simplifies purification — another factor that plays into cost savings down the line. Whether poured into a reaction vessel or used as a laboratory reagent, the substance shows reliable behavior batch after batch, a feature our process engineers take pride in sustaining.
Handling 1,8-Diaminooctane isn’t just about drums and pallets. Our teams work directly with logistics providers to ensure the cargo never faces temperature extremes that might freeze or overheat the solid. We designed our containers so users don’t struggle with lumping or residue — an often-overlooked, time-consuming problem if not addressed from a manufacturing standpoint. Years of operational feedback have shaped every improvement in our filling lines and packaging room.
Leaning on detailed records from hundreds of annual shipments, our storage guidance reflects reality. Kept dry, at ambient temperatures, the material keeps for 12 months without perceptible change in melting point or amine number. If a facility wants to use bulk feed, we offer custom super-sacks or direct-to-hopper solutions, compatible with both large and small installations. Because we run the reactors ourselves, we know the subtle differences in lot color, crystal texture, or even faint ammonia-like odors that signal a manufacturing deviation. That vigilance means you never inherit another party’s quality problem.
Producing 1,8-Diaminooctane at industrial scale means navigating workplace safety, environmental stewardship, and regulatory compliance every day. Our operators wear full PPE throughout manufacturing, keeping workspaces clean and spill-free. Every drum ships with accurate classification and up-to-date documentation, reflecting ongoing changes in REACH and GHS labeling. We run closed-system purification lines to minimize fugitive emissions, addressing both worker protection and local environmental requirements.
Years ago, we invested in automation for raw material dosing and temperature control, helping prevent off-spec material or runaway reactions. Our in-house laboratories review each batch before release, focusing not just on headline numbers but on real-world processability and safety. Clients benefit because they can count on consistency and traceability — crucial for companies facing tight industry certifications or customer audits. We see increasing demand for transparent, low-residue products, which has pushed us to cut residual hydrazine and formaldehyde content to the lowest reliable range for this chemistry.
Our customers don’t always come from large plants. Small innovators and university labs have reached out for assistance using 1,8-Diaminooctane in pilot-scale syntheses, biomedical coatings, or even smart textiles. Our technical support team, staffed with chemists who have run the actual plant lines, fields requests for smaller packaging, advice on handling right-to-the-bench, and recommendations on compatible solvents or co-monomers. We don’t just hand off a product; we offer insight, because our decades spent with diamines translate into practical advice no distributor or catalog can match.
Some partners work on projects that push existing uses. Recent years have seen our material tested in carbon-fiber surface activation, nanomaterial dispersion, and even biopolymer modification where food contact or low extractable content is mission-critical. We support this by voluntarily sending detailed spectral data and impurity profiles — not because a regulation forces our hand, but because we know these details can determine the success of a new technical approach.
Shifting global priorities mean a producer’s role stretches beyond reliable supply. Our facility periodically undergoes third-party audits, not just for ISO certification but also for waste minimization and effluent controls. With every ton of 1,8-Diaminooctane, we scrutinize raw material sourcing, process water recycling, and byproduct capture. As process chemists, we have reduced chlorinated waste by shifting to newer, more selective amination routes. Partnering with surrounding communities, we have invested in scrubbers, updated venting systems, and implemented detailed emergency response drills.
We consult with downstream customers who require statements on heavy metal content or want reassurance on persistent organic pollutant absence. This isn’t about ticking boxes but about making sure users across industries — from textiles to automotive — feel confident about sourcing from a producer with long-term commitments. End-of-life product stewardship comes up more often now, and we provide help navigating recovery or incineration routes, as part of a cradle-to-cradle approach rather than a use-and-dispose mentality.
Supplying 1,8-Diaminooctane worldwide means riding out market cycles, weather disruptions, and unpredictable swings in raw material prices. Our team actively works with partners up and down the value chain, sharing forecast data and inventory status to avoid shortfalls or bottlenecks. We run multiple reactors with staggered maintenance schedules, protecting against unexpected downtime. Finished goods storage prepares for seasonal demand spikes, notably with sectors that ramp requirements according to production calendars.
Unlike a mere reseller, we optimize our distribution chain for both bulk and specialty orders, whether by sea, rail, or road. Our logistics staff train specifically for hazardous goods regulations across various regions, which keeps insurance rates reasonable and maintains on-time delivery. We welcome factory visits and quality audits, because transparency and open communication reinforce confidence for everyone involved.
Experience has taught us that feedback, whether about a batch color variance or a preference for a new packaging size, holds value. We regularly visit customer sites to observe product performance firsthand, speak with operators, and listen to end users. These insights drive tweaks in crystallizer operation, adjustments in drying curves, and improvements in packaging design. The decades spent operating the facility have instilled a culture of problem-solving and constant adaptation, which often shows up in subtle but important improvements.
We have implemented barcoded tracing for every batch, tied directly to our synthesis and QA data, providing real-world traceability. Moving toward digital batch records and secure cloud backups further protects both producer and buyer from disputes or uncertainty years after the initial sale.
We approach every order of 1,8-Diaminooctane as more than just a shipment. Whether the need is for classic polyamide resin, a niche surface treatment, or development of a new polymer family, our role as a manufacturer is grounded in transparency, reliability, and expertise. Continuous investment in plant upgrades, process safety, and customer communication reflects the pride we take in each drum that leaves our site.
Being a true producer of 1,8-Diaminooctane means more than meeting specifications. It means drawing from years on the manufacturing floor, understanding real-world application challenges, and staying alert to the evolving demands of every industry we serve. That hands-on experience is woven through everything we do, batch after batch.