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HS Code |
357348 |
| Cas Number | 928-39-0 |
| Iupac Name | butyl nitrite |
| Molecular Formula | C4H9NO2 |
| Molar Mass | 103.12 g/mol |
| Appearance | yellow liquid |
| Boiling Point | 78-80 °C |
| Melting Point | -115 °C |
| Density | 0.877 g/cm3 |
| Solubility In Water | slightly soluble |
| Odor | fruity, sweet, pungent |
| Flash Point | -14 °C |
| Refractive Index | 1.397 |
| Vapor Pressure | 50 mmHg (20 °C) |
As an accredited N-Butyl Nitrite factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | 250 mL amber glass bottle with secure screw cap, labeled "N-Butyl Nitrite," with hazard warnings and handling instructions prominently displayed. |
| Shipping | N-Butyl Nitrite must be shipped as a hazardous material according to regulations. It should be tightly sealed in appropriate chemical containers, protected from heat and light, and clearly labeled. The shipment must comply with UN 2344, Class 3 (flammable liquid), and be accompanied by proper documentation and handling instructions. |
| Storage | N-Butyl Nitrite should be stored in a cool, dry, and well-ventilated area away from direct sunlight, heat sources, and incompatible materials such as oxidizers and acids. Store it in tightly sealed, appropriately labeled containers made of materials resistant to the chemical. Avoid exposure to light and moisture. Keep away from sources of ignition and ensure proper grounding and bonding to prevent static discharge. |
Applications of N-Butyl Nitrite in Industrial ManufacturingN-Butyl Nitrite serves critical functions in several chemical processing sectors, supporting controlled nitrosation reactions, specialized synthesis, and process intermediate production. As a direct manufacturer, we support industrial clients who require precise compliance, consistent quality, and customized technical support at every stage. 1. Intermediate in Organic Synthesis of PharmaceuticalsPharmaceutical manufacturers use N-Butyl Nitrite for controlled nitrosation steps in active pharmaceutical ingredient (API) synthesis, especially in diazotization and subsequent transformations. Facilities utilize this compound to introduce nitroso groups onto aromatic amines under regulated, moisture-controlled conditions, supporting the production of intermediates for antihypertensives and antiarrhythmic API lines. We supply N-Butyl Nitrite in high-purity grades that fulfill validated GMP protocols, and we advise process engineers on safe integration within multi-step synthesis trains, including in-line monitoring for residual nitrite and process safety management. Industry compliance standards
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2. Industrial Rubber Accelerators and Vulcanization AidsRubber and elastomer factories employ N-Butyl Nitrite during vulcanization to introduce nitroso groups or act as a nitrosating agent for secondary accelerator synthesis. The compound enables efficient modification of thiazole and sulfenamide-based accelerators, which improves end-cure consistency and uniform cross-link density. Our supply chain includes technical-grade batches certified for polymer industry specifications, and we provide technical guides for mixing protocol and batch-wise adjustment, including measures to prevent undesirable side reactions during compounding. Industry compliance standards
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3. Specialty Chemicals for Dyes and Pigment SynthesisDye and pigment manufacturers use N-Butyl Nitrite for in situ generation of diazonium salts, supporting azo coupling reactions and other colorant synthetic processes. As a nitrosating agent, it participates in the conversion of aromatic amines to diazo intermediates with strict process controls for color consistency and impurity minimization. Our production supplies industrial-scale customers running continuous and batch reactors, with tailored supply formats for integration into existing feed lines and material handling systems. Industry compliance standards
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4. Laboratory and Analytical Reagent ManufacturingProducers of analytical reagents adopt N-Butyl Nitrite as a key ingredient in the formulation of chemical test kits and standards for qualitative and quantitative nitrosation detection. Quality control teams utilize our high-purity naalyte for preparation of certified reference materials and calibration solutions, with full batch traceability and impurity profiling available. Our facility provides specialized packing and documentation for research or contract analysis supply lines, meeting stringent analytical-grade requirements. Industry compliance standards
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5. Metal Surface Treatment and Cleaning AgentsIn heavy industry, N-Butyl Nitrite assists formulators in metal surface finishing and cleaning agents, especially for passivation steps on ferrous and non-ferrous alloys. The compound supports deoxidation and temporary corrosion inhibition, and helps prepare metal substrates for downstream electroplating or painting. Technical customers value our consistent blend-grade supply, stable under bulk storage and suitable for integration into aqueous or solvent-based treatment lines. Production guidance includes best practices for dosing, operator safety, and spent-bath neutralization. Industry compliance standards
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Competitive N-Butyl Nitrite prices that fit your budget—flexible terms and customized quotes for every order.
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In the world of fine and specialty chemicals, N-Butyl Nitrite has stood out for decades due to its reliability in applications demanding fast-acting, controlled reactivity. From the perspective of a chemical manufacturer who works directly with the raw materials and controls each step of synthesis, the stakes are always high for purity, consistency, and safety in every batch produced. Working at the manufacturing level means seeing every challenge firsthand and hearing the genuine feedback of industries that depend on dependable nitrite solutions.
Consistent N-Butyl Nitrite production depends on decades of process improvements. Our facility produces batches with tightly controlled nitrite purity, tested regularly with gas chromatography and NMR analysis. Every liter shows specifications that reflect genuine process control — clear yellow liquid, free from visible byproducts, and with batch-to-batch variation kept below the 0.2% mark. Water is unwanted in this material. Residual alcohols and aldehydes can undermine industrial yields, so our in-house analytical lab follows up with headspace testing and titration, guaranteeing the product that leaves our tanks meets the strict benchmarks set not only by international regulations but also by our own internal standards. This type of production discipline simply cannot be found with low-end or repackaged products.
Daily operations demand more than minimum compliance or “typical” product. End-users in organic synthesis, especially for pharmaceuticals and dyes, rely on the stability and predictable volatility of N-Butyl Nitrite. The product acts quickly, delivering nitrosation under controlled temperature and pressure, and the butyl group brings a volatility and solubility profile that fits very specific reaction conditions. Our observations and customer trials show that, compared to methyl or ethyl nitrite, the butyl variant offers a slower release profile, easing temperature management in scale reactions. The slower evaporation rate also means less product is lost to atmospheric discharge during transfer and storage, which directly cuts costs and the environmental footprint.
In the field, differences in raw input purity or container headspace can cause clear variability in reactivity. Over the years, we have tracked this through both customer reports and our own in-plant monitoring. The solvents, pressure, and feed rates can magnify even trace levels of contamination or batch inconsistency. By handling every step from butanol selection through distillation and bottling, the manufacturer controls these variables at their sources. If this sounds pedestrian, that’s because reliable performance is always grounded in the day-to-day habits on the plant floor—constant training, equipment checks, and a refusal to ship product until it hits the expected analytical range.
Watching trends in the specialty chemical market, we see a lot of talk about cost-per-unit and loss prevention, but for many applications, the smallest impurity can become the costliest mistake. Unlike N-Butyl Nitrite sourced and resold through multi-layer distributors, a manufacturer can maintain downstream traceability. In our own plant, each drum carries a batch number that links back to the full lot history: who ran the reactor, which control charts logged temperatures and pressure, the exact hour the batch was finished, and even the lot of raw butanol we used. Customers have leaned on this traceability for everything from regulatory audits to troubleshooting rare spot inconsistencies in their synthesis processes.
Direct manufacturing bypasses risks found with intermediary-sourced chemicals. When product changes hands several times, temperature swings, improper vessel purging, and repackaging into containers made from subpar plastics can lead to product breakdown or new contaminants. We see returns from industrial users who describe changes in reaction output when shifting away from reputable plants to third-party containers. The feedback makes one thing clear: real-world results depend on direct control of every variable, from the purity of reagents down to the materials used in our shipping drums. By maintaining our own drum cleaning and filling line, we can guarantee compatibility between nitrite and package — and our experienced team always checks valving, seals, and drum pressure before signing off on a shipment.
Comparisons crop up in nearly every purchasing inquiry. N-Butyl Nitrite shares many characteristics with other alkyl nitrites, such as isoamyl and ethyl nitrite, but each presents a different trade-off in terms of vapor pressure, staying power, and reactivity. In industrial settings, we get repeated favor for the butyl variant because it delivers effective nitrosation without overwhelming volatility or excessive release of nitrogen oxides. Reactions using methyl or ethyl nitrite can race ahead or fizz out at room temperature, leading to poor selectivity and higher waste disposal costs downstream. The slower-release nature of N-Butyl Nitrite is a key reason it holds its spot in both bulk synthesis and smaller-scale laboratories worldwide.
Unlike isoamyl nitrite, N-Butyl Nitrite shows more predictable behavior under both ambient and elevated pressures. If you walk through a plant using both products side by side, you notice fewer incidents of overpressure with butyl — and that translates to less frequent pressure-relief activations and fewer emergency maintenance calls. This isn’t an academic concern: spare-parts budgets and maintenance shutdowns eat into margins and keep plant managers up at night. Every experienced chemical operator has a story about a runaway pressure spike traced back to a volatile input. N-Butyl Nitrite, by contrast, offers the slower climb and more linear vapor pressure rise that gives operators time to control the process smoothly.
Many issues in the field link directly to improper storage and handling. N-Butyl Nitrite needs constant attention to container integrity, fill pressure, venting, and temperature. At the manufacturing site, we store all product under nitrogen blanketing, away from any source of ignition or temperature swings. We see many accidents after N-Butyl Nitrite leaves a controlled environment, so we push for direct shipping to the end user without temporary warehousing, which can introduce uncontrolled heat or exposure to the open atmosphere.
From first-hand experience, even small departures in end-user storage — plastic containers, loose-fitting bungs, a forgotten drum in a sun-heated warehouse — can break an otherwise high-purity product. Once the tell-tale almond odor escapes, purity drops and the product’s effectiveness in reactions suffers. We have worked with countless customers to trace the root cause of partial decomposition and always return to a lack of airtight packaging or improper warehouse stacking. These real-world headaches shape how our own team approaches shipment and customer education. Satisfying the technical requirements for storage and transit demands more than ticking a box. It takes active checking, trained staff, and tested equipment.
The nitrite family carries its own set of health and safety considerations. Worker welfare drives daily practices, from personal protective equipment to air-handling systems. Our production team is trained to recognize early-stage symptoms of exposure long before they rise to acute concern. Proactive workplace monitoring, local exhaust ventilation, and regular health checks — all are built into our shift schedules and process logs.
On the environmental side, any release of N-Butyl Nitrite can lead to the formation of nitrogen oxides, which contribute to ozone formation and air quality challenges. As manufacturers, we have a responsibility to limit emissions by using closed-loop systems for filling, venting, and cleaning. Years of experience led us to adopt vapor capture systems at all key emission points. We track tank atmospheres for both nitrite and nitrogen oxide concentrations and run quarterly emission checks that feed into plant management audits. For unloaded containers, our cleaning process neutralizes residues in designated reactors, with waste streams processed through onsite treatment before disposal. It’s not just regulatory compliance — customers increasingly demand supplier transparency and performance data, and longstanding experience shows these advancements ultimately cut long-term costs.
A large portion of N-Butyl Nitrite output goes to intermediate reactions in pharmaceuticals, agrochemicals, and colorants. The consistency of nitrosation — producing diazonium compounds without runaway side reactions — raises product recovery and reduces both lost time and waste. This reliability comes back to manufacturing: we hear regularly from pharmacists and plant operators who saw shipping delays, spoilage, or variable titration results with off-brand picks, only to regain consistency after switching back to product delivered direct from our own reactors. In our daily meetings with process chemists, we dissect challenges with scaling, waste management, or yield and look together for practical solutions rooted in small but crucial details — fill-level accuracy, batch mixing, or freshly calibrated sensors.
In automotive and performance solvents, N-Butyl Nitrite found a durable spot thanks to both its strong solvency and resistance to explosive decomposition. Operators have learned that reliable product means fewer shutdowns and less interruption from safety controls. These users depend on the cautious, practiced hands at the manufacturing floor — there’s no shortcut to years of direct equipment experience, careful blending, and bulk-tank maintenance. Years of field feedback have led us to make small but critical updates to our drum-purging and filling lines, and these efforts show clear results: fewer quality complaints and higher loyalty among long-term industrial users.
Chemical manufacturing now demands more transparency than ever. All N-Butyl Nitrite batches run through analytical testing, with results logged into digital quality management systems for audit readiness. These systems are constantly reviewed by both in-house experts and third-party auditors — rarely a month goes by without a new finding or improvement opportunity. Years of learning from corrective actions, root-cause investigations, and process redesigns lead us to higher levels of security for every downstream user. The drive for performance doesn’t sit in an inspection manual — it comes from technicians, engineers, and QA staff taking ownership for every step, and a culture of open error-reporting and solution-building.
Many of our largest customers demand documentation of every analytical trace, production log, and safety review. We keep archives going back years, and pull paper copies for site audits by request. Supplying pharmaceutical and food contact intermediates adds another layer of scrutiny. Few manufacturers can tolerate shortcuts in this area — customers want clear evidence of airtight processes and controls, and our direct role in the supply chain lets us provide it, with supporting documentation for everything from batch time logs to calibration certificates.
The last decade saw a push for lower environmental impact, safer operations, and improved batch yields. In our plant, we upgraded reaction and distillation systems to reduce solvent usage and wastewater volumes, investing in new condensing and containment systems. Over the years, we have replaced legacy tanks and valves with modern instrumentation, running pressure, flow, and temperature data into real-time control centers. These investments show up in every shipment, building a reputation not just for purity, but for timeliness and safety in delivery. Regular dialogue with both customers and regulatory authorities keeps our team aware of changing expectations, and shapes our investment schedule and training programs.
One of our ongoing focuses involves regular education programs for staff and end-users. We tailor training to each operator’s experience, walk through specification sheets, and rehearse handling emergencies. Every year brings equipment upgrades and new documentation processes. Live audits, operator certifications, and digital compliance systems have made our operations more transparent and safer for both plant staff and customer partners.
From experience, the majority of quality problems downstream result from mismatches between product requirements and end-user handling. Education programs, detailed batch documentation, and technical support hotline access bring measurable results in terms of yield and safety improvements. Our team is present at key industry summits, sharing know-how and taking home end-user feedback to improve our systems. In manufacturing meetings, staff swap stories of issues seen at customer sites — drum pressure drops, seal failures, temperature excursions — and use this real-world knowledge to update protocols for shipment and onsite storage.
Collaborative troubleshooting matters and fosters shared accountability. A support system built on certified chemists, process operators, and engineers provides practical support to any user struggling with reactivity or storage problems. Each report from the field helps us refine drum specifications, tweak shipment and vapor recovery protocols, or swap in upgraded drum linings. We have improved support documents and reference charts to help guide technical leads at customer plants, reducing avoidable waste and increasing both safety and compliance rates. Years in the business show that adaptation, openness, and respect for field input set apart the manufacturer from commodity chemical suppliers.
Long-term relationships, rather than quick transactions, define the success of this chemical. Every batch, every drum prepared and shipped, stands as both a promise and a test: have the decades of improvements, investments, and field feedback reached the real-world operators? The gaps between minimum specification and consistently high-quality product arise from an unbroken focus on process, safety, and transparency at every level — from raw material reception to final shipment and end-user education. For us, N-Butyl Nitrite manufacturing is both an ongoing responsibility and a point of real pride, rooted in hands-on expertise and unwavering attention to detail.