Products

N-Propyl Chloroformate

    • Product Name: N-Propyl Chloroformate
    • Alias: 1-Chlorocarbonic acid propyl ester
    • Einecs: 203-588-1
    • Mininmum Order: 1 g
    • Factroy Site: Yudu County, Ganzhou, Jiangxi, China
    • Price Inquiry: admin@ascent-chem.com
    • Manufacturer: Ascent Petrochem Holdings Co., Limited
    • CONTACT NOW
    Specifications

    HS Code

    351304

    Cas Number 621-64-7
    Molecular Formula C4H7ClO2
    Molar Mass 122.55 g/mol
    Appearance Colorless to pale yellow liquid
    Boiling Point 108-110 °C
    Melting Point -70 °C
    Density 1.068 g/cm³ at 20 °C
    Refractive Index 1.402 (20 °C)
    Flash Point 27 °C (closed cup)
    Solubility In Water Decomposes

    As an accredited N-Propyl Chloroformate factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing N-Propyl Chloroformate is supplied in a 500 mL amber glass bottle, sealed and labeled with hazard warnings and product details.
    Shipping N-Propyl Chloroformate should be shipped in tightly sealed containers made of compatible materials, under cool, dry conditions and away from direct sunlight. It is classified as a hazardous material and must be labeled accordingly. Ship via approved carriers, avoiding exposure to heat, moisture, and incompatible substances such as acids and bases.
    Storage N-Propyl Chloroformate should be stored in a tightly closed container, in a cool, dry, and well-ventilated area away from moisture, heat, and direct sunlight. It must be kept away from sources of ignition and incompatible substances such as strong acids, bases, and oxidizers. Storage in a flammable chemicals cabinet is recommended, and appropriate chemical safety labeling should be used.
    Application of N-Propyl Chloroformate

    Applications of N-Propyl Chloroformate in Industrial Manufacturing

    As an established producer of N-Propyl Chloroformate, we serve industrial clients engaged in regulated manufacturing sectors. Below, we present a comprehensive overview of downstream applications based on actual market demand and process integration, detailing compliance requirements, recommended formulation ranges, production workflow touchpoints, and commercially validated end products.

    1. Pharmaceutical Intermediate Synthesis: Carbamate and Urethane Formation

    N-Propyl Chloroformate plays a critical role in the synthesis of active pharmaceutical ingredient (API) intermediates, particularly in processes where mild carbamoylation or urethane linkage introduction is required. It is used to form n-propyl carbamates and protected amines, which serve as key intermediates for several drugs, including antiviral agents and CNS-acting molecules. Manufacturers use stringent in-process controls to meet international pharmacopoeial standards during multi-step synthesis, ensuring targeted yields and ease of deprotection for downstream reactions.

    Industry compliance standards

    • ICH Q7 Good Manufacturing Practice for APIs
    • USP and Ph. Eur. monographs for relevant APIs
    • FDA 21 CFR Part 211 — cGMP for Finished Pharmaceuticals
    • REACH Annex XVII — restrictions on industrial intermediates

    Typical usage ratio

    • 0.9–1.1 molar equivalents relative to the substrate amine, adjusted for process yield and impurity profiles

    Downstream process integration

    • Nucleophilic substitution with amines or amino alcohols in polar aprotic solvents at controlled temperatures (0–25°C) with acid scavenger; followed by purification via crystallization or distillation depending on sensitivity of the intermediate

    Final product types

    • Carbamate-protected amine intermediates for cephalosporins and sulfonamides
    • Urethane derivatives for antiretrovirals
    • Custom API precursors for innovator and generic drug production

    2. Agrochemical Active Ingredient Manufacturing: Herbicide and Insecticide Intermediates

    Producers of crop protection chemicals incorporate N-Propyl Chloroformate in selective carbamate synthesis and esterification steps. Its reliable reactivity supports the production of intermediate compounds that feed into the final formulation of modern herbicides and insecticides. In each process batch, operators closely monitor stoichiometry and residual chloride levels to conform to industry and environmental guidelines.

    Industry compliance standards

    • FAO/WHO Specification for Pesticide Active Ingredients
    • ISO 9001:2015 Quality Management for Agrochemical Plants
    • EU Regulation (EC) No 1107/2009 on plant protection products
    • Globally Harmonized System (GHS) for product stewardship

    Typical usage ratio

    • 0.8–1.2 equivalents based on target acid or amine functional group concentration, recalibrated depending on specific crop protection formulation

    Downstream process integration

    • Carbamation or chloroformylation of agricultural chemical scaffolds via solution-phase batch reactors, typically under inert atmosphere; unreacted material recovered and purified for waste minimization

    Final product types

    • Isocyanate-containing pre-herbicide intermediates
    • n-Propyl carbamate building blocks for systemic insecticide synthesis
    • Synthetic intermediates for sulfonylurea and phenoxy herbicide families

    3. Fine Chemical and Fragrance Ingredient Modification

    Manufacturers of aroma chemicals and specialty esters utilize N-Propyl Chloroformate within selective esterification and protection strategies to enhance olfactory characteristics or adjust volatility profiles of fine chemicals. It is often used in controlled batch operations where high aromatic purity and low byproduct thresholds are paramount, and process modifications respond to downstream organoleptic analysis requirements.

    Industry compliance standards

    • IFRA Standards for Fragrance Ingredients
    • ISO 9235:2013 (Aromatic Natural Raw Materials — Vocabulary)
    • EU Regulation (EC) No 1223/2009 (Cosmetics Safety for fragrance applications)
    • REACH Regulation (EC) No 1907/2006 (Registration of chemical substances)

    Typical usage ratio

    • 0.7–1.3 molar equivalents, tailored to desired conversion yield and extent of side reactions impacting odor profile

    Downstream process integration

    • Addition to alcohols or phenols at low temperatures, commonly in the presence of organic base and solvent systems; post-reaction purification by vacuum distillation to separate the esterified fraction from residual reactants and unwanted side products

    Final product types

    • N-propyl esters with fruity or solvent notes employed in fine fragrance compositions
    • Protected fragrance intermediates for subsequent hydrolysis release
    • Functional aroma compounds in flavor and cosmetic blending

    4. Polymer Additive Synthesis: Specialty Urethane and Carbamate Functionalization

    Producers of performance polymers, especially in the coatings and adhesives industry, introduce N-Propyl Chloroformate as a functionalization agent to generate carbamate-terminated prepolymers or blocked isocyanates. These modified resins demonstrate superior stability or improved application life in thermoset and radiation-curable formulations. The material’s addition occurs under tightly controlled reaction times and monitored exotherms to ensure consistent modification without compromising base polymer integrity.

    Industry compliance standards

    • ISO 9001:2015 Polymer Manufacturing Standards
    • EU Regulation (EC) No 1272/2008 (CLP for chemicals in industrial products)
    • UL 94 Safety of Flammability for polymer end uses
    • EPA TSCA Inventory Listing for notified new chemical substances

    Typical usage ratio

    • 0.5–1.0 weight-% relative to total polymer matrix, proportional adjustment linked to molecular weight and target degree of functional group introduction

    Downstream process integration

    • Incorporation into prepolymer melt or solution at 40–80°C in the presence of chain extenders or cross-linkers; batch dosing timed to coincide with termination step, typically under inert gas for moisture-sensitive formulations

    Final product types

    • Carbamate-capped polyurethane prepolymers
    • Blocked isocyanate intermediates for 2K coatings
    • Reactive additives in adhesives for automotive and electronics assembly

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    Certification & Compliance
    More Introduction

    N-Propyl Chloroformate: A Manufacturer’s Perspective on a Trusted Chemical Intermediate

    Meeting Real Industry Needs with N-Propyl Chloroformate

    N-Propyl Chloroformate stands out in the family of chloroformates for its noticeable efficiency and reliability in pharmaceutical and agrochemical processes. Through years of manufacturing this compound, we have seen first-hand how it serves as a workhorse for a range of chemical transformations, particularly where selectivity, reactivity, and consistency matter most. Our on-site teams keep a sharp eye on each stage of the synthesis, so every batch shows the reproducibility customers want in demanding production environments.

    Recognizing the Value in the Right Specifications

    Users often emphasize the importance of a clear and well-maintained product profile. We manufacture N-Propyl Chloroformate at high purity, commonly exceeding 99%, with strict moisture and acid content controls. These factors control side reactions and improve yields, especially during carbamate and carbonate synthesis. From our vantage point, pursuing even minor improvements in purity can translate to savings on downstream purification and better final product consistency. The most frequent feedback highlights the advantages companies see in high assay, minimal by-products, and a transparent supply chain. Raw material traceability plays a direct role in maintaining standards batch after batch.

    How We Address Handling and Packaging Realities

    N-Propyl Chloroformate carries common hazards typical of alkyl chloroformates, with skin and respiratory risks. Our plant invests in airtight filling technology and corrosion-resistant containers, limiting workplace exposure and degradation in transit. Standard packaging ranges from small glass bottles for R&D labs to drums for full-scale production. We see that closed-system transfer options often appeal to contract manufacturers and those at scale, who want to keep personal exposure and transfer losses low. Packaging design takes into account environmental conditions during shipping, which helps avoid discoloration and pressure buildup. These practical steps follow from daily interactions with loading docks and process lines, where details matter more than general promises.

    Product Performance: Looking Beyond the Obvious

    Clients often ask about differences between N-Propyl Chloroformate and its siblings, such as methyl, ethyl, or isobutyl chloroformate. Over years of specialty synthesis contracts, we’ve logged the distinctions in both physical properties and chemical reactivity. N-Propyl Chloroformate boils at a higher temperature than its methyl and ethyl counterparts, reducing evaporative losses in warmer environments. Its odor profile is distinct but less pungent than methyl chloroformate. In lab and plant trials, it shows smoother handling in continuous systems, reducing clogging in feed lines due to manageable viscosity and vapor pressures. Subtle differences like these often go unnoticed until scale-up, where unexpected downtime leads to wasted effort.

    From experience, selectivity in reactions such as the synthesis of carbamates or protecting group chemistry benefits from the unique balance of reactivity and volatility found with the n-propyl group. For applications needing protection of sensitive functional groups, many synthetic chemists prefer N-Propyl Chloroformate for its cleaner conversion profiles and reduced codecomposition when forming intermediate carbonates. Our technical support talks to users who've tested multiple alkyl chloroformates but settled on the n-propyl variant to minimize hazardous off-gassing or when specific solubility requirements arise.

    Sustainability and Production Integrity

    Manufacturing N-Propyl Chloroformate generates by-products, with phosgene and HCl being chief concerns. We’ve put real effort into capturing by-product streams at the reactor stage, employing in-line scrubber technology and automated pH controls. There’s a tangible benefit when neighbors and local authorities recognize lowered emissions, but the front-end drivers remain worker safety and reliable production. Years of process optimization have closed the gap on batch reproducibility, even as you push lines harder or run through hot summers.

    Sourcing feedstocks with verified chain-of-custody lets us assure downstream partners of continuous supply, especially as global supply chains come under strain. Conversations with logistics teams and procurement professionals show demand for consistency—no last-minute substitutions or unannounced alterations in product quality. We’ve aligned our production cycles and documentation with these expectations, publishing origin data and certification that remains accessible through every transaction. From time to time, regulatory controls stretch compliance teams thin, but a manufacturer’s transparency lowers inspection questions and accelerates onboarding for new contracts.

    Application Scenarios That Drive Technology Choices

    Markets for N-Propyl Chloroformate include pharmaceutical synthesis, crop protection intermediates, and specialty polymers. We routinely supply companies producing amine carbamates, which serve as protecting groups for peptide synthesis. In our experience, the n-propyl group provides a compromise between steric bulk and reactivity that often simplifies deprotection steps. This increases throughput and curbs the need for repeated post-reaction workups.

    Process engineers have pointed out another practical effect—controlled addition of N-Propyl Chloroformate enables improved batch-to-batch repeatability, particularly with sensitive substrates. Several customers in agrochemicals note greater tolerance to ambient humidity, reducing the need for climate-controlled storage. Demand in electronics and fine chemicals sectors reflects its role in producing low-residue materials, often used in coatings that can’t tolerate halogen contamination. These are not theoretical advantages but direct responses to feedback on previous production headaches.

    Differences From Other Alkyl Chloroformates

    Every operator wonders at some point whether switching to a different alkyl chloroformate could cut costs or solve integration snags. Years of field data and comparative batch analysis show clear trends. Methyl and ethyl chloroformates react faster under the same conditions but raise volatility and waste management issues, especially under large-scale manufacturing. Isobutyl and tert-butyl chloroformates deliver increased steric hindrance, which can cause incomplete conversions in tightly packed systems. N-Propyl Chloroformate occupies a sweet spot: reactivity allows manageable production speed without runaway side reactions.

    In storage trials, we’ve documented that N-Propyl Chloroformate maintains chemical stability longer than lower alkyl analogues, supporting longer shelf lives and fewer quality check failures. Our QC records include less frequent incidents of decomposition products, such as acid halides and alcohol fragments, which can complicate downstream reactions. Each alteration in the alkyl group changes the reaction energy profile and impurity spectrum. This translates to fewer troubleshooting calls and production stop-overs from operators running multi-ton batches who adopt N-Propyl Chloroformate over alternatives.

    Offering Insight on Sourcing and Availability

    We don’t take for granted the challenge of keeping consistent stock in volatile raw materials markets. Our experience bears out that having on-site reserve capacity and close ties to upstream suppliers shields against seasonal shortages or shipping disruptions. Responsibility also means maintaining buffer inventory to cover periods of unexpected demand, which arises periodically during regulatory shifts or competitor plant outages.

    The rewarding part comes from supporting companies through technical transitions, investment in new capital equipment, or pilot scale introductions. We’ve worked with groups where swapping from ethyl chloroformate to N-Propyl Chloroformate allowed new process windows, increasing yield or reducing equipment corrosion. In these cases, open lines of communication between plant managers, R&D, and our technical support teams help smooth the path—the human side of manufacturing seldom gets headline space but proves essential when deadlines loom and equipment needs recalibration.

    Facing Evolving Regulatory and Safety Realities

    The regulatory environment for chloroformates keeps shifting, reflecting new understandings about exposure risks and environmental hazards. Over the past decade, we’ve overhauled monitoring, spill containment, and waste management procedures in line with stricter standards. We stay in dialogue with environmental health officers and provide in-person training on best handling practices for our product. This isn’t just compliance—it protects team members and fosters competence, with regular drills tracked and reviewed.

    Supply partners often check documentation trailbacks and compliance certificates before entering contracts. We keep such records ready and detailed, reflecting both successful inspections and continuous improvement milestones. These efforts lead to fewer surprises along the supply chain, and customers find their own audits go faster. Collaborating on transport plans with logistics leads—emphasizing safe routes and minimized handling—roots our solution-oriented approach in practical knowledge, not just regulatory handbooks.

    Setting the Bar on Customer Collaboration

    Our relationships with longstanding clients shape the way we produce and supply N-Propyl Chloroformate. Every customer presents a unique challenge: identifying possible residues, compatibility with new process solvents, or troubleshooting endpoint signals in large-scale reactors. We get repeated requests for custom-tailored documents on impurity profiles, storage recommendations, and risk assessment. Years in the field mean we know where typical pain points arise and address them before they grow into major costs.

    Support continues beyond delivery. Whether a company scales from pilot to commercial production or faces new analytical standards, we share knowledge gathered from hundreds of successful transitions. Experience leads to practical advice—for example, choosing compatible gaskets or specifying glassware grades that survive frequent exposure to corrosive agents. Companies often call for guidance during process optimization, and our team answers directly, drawing on engineering records from previous installations.

    Our field representatives regularly visit customer sites, listening instead of leading with pre-written slides. Genuine feedback leads to real-time adjustments in production or packaging, whether for slightly altered drum sizes, modified linings, or bespoke container labels meeting site safety protocols. These details bring efficiency and operational ease, something standardized catalogs often overlook.

    Pursuing Next-Generation Advancements

    Research directions in our facility focus on boosting process safety and exploring greener synthesis routes for N-Propyl Chloroformate. Current programs concentrate on minimizing chlorinated waste at the production stage and recycling process solvent loops. Many in the market express interest in alternatives to traditional phosgene precursors. Our team has piloted non-gaseous approaches, monitoring impact on yield and scalability. We share those findings transparently, even when trade-offs result, providing honest insights to partners developing more sustainable supply chains.

    Long-term supply contracts drive continuing investment in both reactor automation and real-time monitoring. Over the last cycle, we’ve implemented closed-loop controls that detect batch anomalies and adjust addition rates on the fly. This translates to better reproducibility in the hands of end-users, particularly in tightly regulated pharmaceutical lines where lot traceability affects final release schedules. These investments spring from firsthand accounts of downtime losses, and our operators contribute to pilot design as much as researchers do.

    Genuine Experience Guiding Every Batch

    The real story of N-Propyl Chloroformate emerges in daily manufacturing routines: raw material validation, operator training, on-deck process adjustments, and close communication with users worldwide. We’ve forged our approach on factory floors, not in abstract policy. Every specification, technical tip, and handling practice results from observed outcomes—not just chemical possibility, but feedback from hundreds of batches and years of operational know-how.

    We hold ourselves to the standard of clear, direct communication with customers, blending deep domain understanding with a readiness to listen and adapt. N-Propyl Chloroformate stands as a product defined by the sum of these experiences, bringing real value in sites where uptime and product purity cannot be compromised. As demand shapes new applications and pushes boundaries on efficiency, our knowledge base grows richer, grounded in genuine results found at the interface of science and manufacturing pragmatism.

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