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Dipropyl Sulfide

    • Product Name Dipropyl Sulfide
    • Alias DPS
    • Einecs 211-937-4
    • Mininmum Order 1 g
    • Factory Site Tengfei Creation Center,55 Jiangjun Avenue, Jiangning District,Nanjing
    • Price Inquiry admin@sinochem-nanjing.com
    • Manufacturer Sinochem Nanjing Corporation
    • CONTACT NOW
    VTB
    Specifications

    HS Code

    539573

    chemical_name Dipropyl Sulfide
    synonyms Di-n-propyl sulfide; n-Propyl sulfide
    molecular_formula C6H14S
    molar_mass 118.24 g/mol
    appearance Colorless to pale yellow liquid
    odor Unpleasant, garlic-like odor
    boiling_point 142-144 °C
    melting_point -92 °C
    density 0.844 g/cm³ at 20 °C
    refractive_index 1.442 at 20 °C
    flash_point 36 °C (closed cup)
    solubility_in_water Insoluble
    logP 2.8
    cas_number 111-47-7

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

    Packing & Storage
    Packing Dipropyl Sulfide, 500 mL, clear glass bottle with secure screw cap; hazard labeling and chemical information printed on outer label.
    Shipping Dipropyl Sulfide should be shipped in tightly sealed containers, stored in a cool, well-ventilated area, and away from sources of ignition. It is classified as a flammable liquid and must be handled according to relevant transportation regulations. Shipping labels and safety documentation, including MSDS, are required to ensure safe handling and transport.
    Storage Dipropyl sulfide should be stored in a cool, dry, well-ventilated area away from sources of ignition, heat, and direct sunlight. Keep the container tightly closed and properly labeled. Store away from oxidizing agents, acids, and strong bases to prevent hazardous reactions. Use corrosion-resistant containers and ensure suitable spill containment is in place to avoid leaks or accidental release.
    Application of Dipropyl Sulfide

    Applications of Dipropyl Sulfide in Industrial Manufacturing

    Dipropyl sulfide finds specialized use in chemical manufacturing, driven by its unique organosulfur profile and distinctive odor. The following industrial application areas demonstrate how this material integrates into real-world downstream manufacturing chains based on established market practice, technical parameters, and regulatory frameworks.

    1. Aroma Compound Synthesis for Food Flavors

    Dipropyl sulfide plays a technical role as a trace sulfur donor in the formulation of savory flavors, specifically for seasoning bases that mimic cooked meat, onion, or garlic profiles. Its reactivity supports Maillard-type reactions during flavor compounding, contributing subtle aroma nuances required by processed food manufacturers. Use in this application adheres strictly to food safety and impurity controls, guided by the maximum allowable thresholds set by flavor and food authorities in primary export markets.

    Industry compliance standards

    • US FDA 21 CFR §172.515 (Flavoring Substances and Adjuvants)
    • EU Regulation (EC) No 1334/2008 on flavorings
    • JECFA Food Additives Series (Flavouring Group Evaluation)
    • GB 2760-2024 (Chinese National Food Safety Standards for the Use of Food Additives)

    Typical usage ratio

    • 0.01–5 ppm in finished food products; flavor compounders further dilute in aroma concentrate premixes
    • Exact level determined by overall sulfur volatiles in the target formulation and compliance with regional maximum use limits

    Downstream process integration

    • Incorporated during aroma reaction stage or blended in post-reaction formulation of flavor concentrates
    • Handled in closed systems with vapor-phase monitoring due to strong odor and occupational thresholds

    Final product types

    • Snack seasoning blends (potato chips, wheat crackers)
    • Instant soup or bouillon cubes
    • Processed meat flavors for vegetarian ready meals
    • Savory sauces (soy-based, Worcestershire-type, gravies)

    2. Chemical Intermediate for Thioether Synthesis

    Industrial chemical manufacturers utilize dipropyl sulfide as a key intermediate in the synthesis of higher thioethers, which function as solvents, extraction agents, or further pharmaceutical precursors. The controlled introduction of the propylthio moiety allows downstream producers to build targeted sulfur-containing compounds, ensuring batch-to-batch homogeneity for specialty chemical markets. Raw material traceability and intermediate QC align with hazardous chemical handling and REACH registration for import/export.

    Industry compliance standards

    • REACH Regulation (EC) No 1907/2006 (Intermediates and Substance Registration in EU)
    • OSHA 29 CFR 1910.1200 (Hazard Communication Standard in the US)
    • ISO 9001:2015 (Quality Management for chemical intermediates)
    • SDS supply to all downstream handlers under GHS

    Typical usage ratio

    • 5–20% of total reaction mass, depending on target molecule architecture and required sulfur balance
    • Process development labs conduct dose-scaling based on mole ratio with alkylating/oxidizing agents

    Downstream process integration

    • Added at controlled temperature/pressure to alkylation or oxidation reactors in closed system
    • Monitored for byproduct minimization and downstream purification yield

    Final product types

    • Custom thioether solvents for metal extraction (hydrometallurgy)
    • Organic sulfur intermediates for pharmaceutical precursors
    • Lubricant additives based on sulfur-containing structures
    • Specialty reagents for organic synthesis

    3. Selective Extraction and Phase Transfer Agent in Petrochemical Processing

    Dipropyl sulfide functions as an extractant and phase transfer agent in refinery and petrochemical unit operations, particularly for the removal or recovery of transition metals and specific organic contaminants from hydrocarbon streams. Its controlled miscibility with organic phases underpins selectivity in solvent extraction columns, supporting downstream product purity for fine petrochemical outputs. Material handling aligns with process safety and VOC/emission limits typical of large-scale refinery operations.

    Industry compliance standards

    • API Process Safety RP 754 (Process Safety Performance Indicators for the Refining and Petrochemical Industries)
    • EU Directive 2010/75/EU (Industrial Emissions - VOC/solvent use)
    • ISO 14001:2015 (Environmental Management Systems for chemical operations)
    • NFPA 30: Flammable and Combustible Liquids Code

    Typical usage ratio

    • Employed at 0.5–3% by mass relative to hydrocarbon feedstock being processed
    • Dosing precision varies by target contaminant phase, viscosity, and operating temperature

    Downstream process integration

    • Injected into liquid-liquid extraction columns for batch or continuous operations
    • Separated during phase disengagement and recycled or incinerated depending on site policy

    Final product types

    • Refined naphtha and hydrocarbon solvents with reduced impurity content
    • Catalyst-grade petrochemical intermediates
    • Purified cycloalkane and aromatics fractions for downstream syntheses
    • Recoverable metal-containing phases for catalyst regeneration

    4. Standardized Sulfur Odorant for Gas Leak Detection

    Gas utility providers and gas cylinder plants incorporate dipropyl sulfide as a part of multi-component sulfur odorant blends to ensure early and reliable gas leak detection. Its characteristic odor threshold, well above typical ambient sulfur baseline, delivers a recognizably strong warning signal, even at low ppm levels. Use involves strict metering and dose validation, with full traceability for health, safety, and environmental risk management under chemical storage and odorant blending protocols.

    Industry compliance standards

    • EN ISO 13734:2013 (Natural Gas – Odorization and Odorant Quality Control)
    • US DOT 49 CFR Parts 192.625 (Transmission and Distribution Piping Systems - Odorization of Gas)
    • NFPA 54/National Fuel Gas Code (Gas Piping and Equipment Odorant Requirements)
    • Occupational exposure limits—OSHA PEL & ACGIH TLV for sulfur compounds

    Typical usage ratio

    • 0.5–20 mg/m3 pipeline gas, adjusted to meet “readily detectable by smell at one-fifth lower explosive limit” per market-specific rules
    • Blend ratios determined by compatibility with t-butyl mercaptan and other thioethers

    Downstream process integration

    • Blended into liquid odorant mix, injected into gas transmission pipelines via calibrated pump skids
    • Continuous inline sensor monitoring for real-time dose verification

    Final product types

    • Odorized LPG, CNG, and city gas for residential, commercial, and industrial distribution
    • Bottled gas cylinders with traceable odorant marker
    • Pipeline-quality natural gas with certified sulfur odorant levels
    • Calibration gases for detector and alarm system validation
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    Certification & Compliance
    More Introduction

    Dipropyl Sulfide: Essential Chemical for Advanced Industrial Needs

    Decades of Production Experience with Dipropyl Sulfide

    Our long history with Dipropyl Sulfide gives us a unique perspective on its properties and uses. Over the years, we've watched industries change how they view sulfide compounds. In the early days, attention focused almost entirely on the strong aroma. Now, customers look beyond odor. They seek consistency, traceability, and accurate specifications. Over thousands of production batches, certain lessons don't change: maintain strict process control to ensure purity, and always investigate any trace of side products.

    We manufacture Dipropyl Sulfide with a commitment to quality that comes from hands-on experience. The product emerges as a clear, colorless liquid with a faint, characteristic odor. Raw materials selection always matters. Every supplier batch goes through rigorous checks for hydrocarbon contaminants. Distillation setup gets tuned for sulfur recovery and recycle. Only these steps achieve a stable assay, which often measures in the 98-99% range.

    Customers ask about product identity and we answer directly. The molecular formula is C6H14S. That means two propyl groups attached to a single sulfur atom. This straightforward structure gives it good volatility and strong chemical reactivity in organic synthesis. Average density remains about 0.823 g/cm³ at standard conditions. Boiling point sits near 142°C, a range that allows plenty of flexibility in solvent recovery or downstream processing.

    How We Ensure Quality and Reliability

    Field experience keeps teaching us about the real challenges end users face. One hard truth stands out: dips in consistency create delays and costs. Even small variations in color or odor can signal purity drift. Over time, our teams have adopted multi-step verification and additional gas chromatography stages. These ensure that every drum of Dipropyl Sulfide leaves the plant with predictable quality.

    We run our facilities according to strict protocols for containment and inerting. This discipline doesn’t just protect our operators; it also shields the product from oxygen exposure. Sulfide oxidation not only reduces shelf life—it also creates new, unpredictable by-products. Careful packaging and transportation further help in preserving chemical integrity. Every container gets thoroughly inspected before dispatch, and we only use certified logistics partners for outbound shipment.

    Use Cases Shaped by Industry Experience

    Dipropyl Sulfide’s manufacturing roots often tie back to pharmaceutical and agrochemical synthesis. It serves as a classic sulfur donor and is frequently present in processes requiring selective alkylation. Chemical producers value the way it can aid in introducing organosulfur motifs into more complex molecules. Our clients in research and development comment on its versatility as a building block. For certain processes, it can act as a phase-transfer catalyst or even serve as a tracer.

    We’ve seen more requests for Dipropyl Sulfide in flavor and fragrance research over recent years. While not a major component in finished foodstuffs, its odor-masking qualities help chemists fine-tune synthetic blends. Its volatility allows for easy manipulation in vapor-phase applications. Our plant operators appreciate its manageable boiling range, which enables solvent stripping without complicated fractionation.

    Oilfield chemistry employs Dipropyl Sulfide as well. It works as a corrosion inhibitor when combined with other organosulfur compounds. In field trials, mixing with lower alkyl sulfides often produces formulas that suppress pipe oxidation more effectively. These operational insights come from years of supplying the sector and soliciting feedback on batch-to-batch performance.

    Why Dipropyl Sulfide Differs from Other Organosulfur Compounds

    Chemists often compare Dipropyl Sulfide with lower homologues like dimethyl sulfide or diethyl sulfide, and with longer chains such as dibutyl sulfide. Structural differences drive usability. Dimethyl sulfide comes with sharper volatility and distinctive odor, useful in some applications but restrictive in others. Diethyl sulfide provides a midpoint, but its handling often lacks the balance seen in the dipropyl derivative.

    Dipropyl Sulfide brings greater solubility in organic phases without causing excessive vapor pressure. Its immiscibility with water allows for straightforward extraction and product separation. In thermal processing, it exhibits a manageable flash point, which helps maintain safety margins. Over the years, we’ve watched customers prefer it for situations where neither too much volatility nor excessive viscosity prove acceptable.

    Longer chain analogs sometimes promise lower odor but come at the cost of reduced reactivity and increased storage challenge. They build up more residue in process lines and often require extra heating for dissolution or transfer. Dipropyl Sulfide avoids those headaches—its physical properties support straightforward pumping and mixing at ambient temperatures. For both large-scale and lab-scale users, daily handling becomes easier and safer.

    We emphasize that Dipropyl Sulfide’s chemical stability provides a critical benefit. Its structure resists hydrolysis under neutral and slightly alkaline conditions. Unlike some cyclic or aromatic sulfides, it does not ring-open or polymerize under typical storage. Our decades of warehouse observations confirm this point: correctly packaged, Dipropyl Sulfide holds up well over time.

    Practical Solutions for Storage and Handling

    Our production staff treat Dipropyl Sulfide as a manageable liquid, but familiarity does not breed complacency. Overexposure to air or light can trigger formation of peroxides, especially in the rare case of trace oxygen in the headspace. We store all containers under nitrogen blanketing, using drum-level scrubbing where required. A simple, robust filling line helps maintain exclusion of air, and we recommend storage in tightly sealed metal drums away from direct sunlight.

    Workplace training matters. Operators receive regular guidance on safe transfer, spill control, and odor containment. Proper PPE remains non-negotiable on the production floor. Our bulk blending systems use closed-loop transfer with leak-detection alarms to safeguard both workers and product. Customers with bulk storage get detailed guidelines from us on tank design, venting, and material compatibility.

    Traceability and Regulatory Compliance Built In

    As manufacturers, traceability stays at the core of every shipment. Each batch of Dipropyl Sulfide receives full documentation and a retained sample for future reference. Analytical records detail chromatograms, assay, and impurity levels, archived on-site for ease of lookup. This practice comes from a commitment to transparency and built trust with customers during audits and validations.

    Modern industry demands more than just a product that works. Environmental, health, and safety regulations keep tightening, especially around sulfur compounds. Our compliance teams track updates in material registration, safety data requirements, and workplace labeling. Wherever mandated, we supply documentation on toxicology and environmental aspects. We regularly invest in process improvements to minimize environmental impact, particularly by reducing sulfur dioxide off-gassing during production.

    Supply Chain Insights from Direct Experience

    Raw material markets for thioalcohols and propyl derivatives fluctuate. Having flexible purchasing and storage capacity provides a buffer against short-term swings. Years of experience have shown that collaborating closely with core suppliers preserves both price stability and quality consistency. Disruptions—to logistics, equipment, or even climate—mean the plant must keep robust contingency plans in place.

    Our role as mainline producers gives end-users faster answers and adjustments. Clients facing new project requirements bring their process chemists to our site for joint troubleshooting sessions. A chemist once explained that a slight odor deviation caused a failed batch at his plant. We traced the culprit to a change in a precursor supplier several steps up the chain. Batch segregation and near-line analytics, built into our daily routine, swiftly fixed the issue.

    Supporting R&D and Custom Application Development

    Many innovations in synthetic chemistry start with routine feedback from the users of foundational materials. Dipropyl Sulfide has found new roles beyond its original purpose thanks to collaboration. We work with developers who use it to study new sulfur transfer reactions, as well as those exploring improved surfactant formulations. Sometimes, we supply custom blends or small-batch variants, made with adjusted purity or spiked with selected markers for analysis.

    R&D requests often bring us unexpected challenges. A lab investigating sulfur-doped graphene once requested an ultra-low trace metal version of Dipropyl Sulfide. Tightening distillation cut points, replacing traditional piping sections with new materials, and working outside normal batch size all came into play. These efforts, no matter how odd at first, push our capabilities and equipment in valuable directions.

    Large chemical plants emphasize repeatability, but our experience shows custom needs never stop growing. Each year brings new environmental, safety, or analytical targets. By keeping the core process robust but flexible, we keep providing Dipropyl Sulfide that adapts to evolving standards.

    Embracing Sustainability and Process Improvements

    Scrutinizing each production cycle for opportunities to cut waste and emissions has become standard practice. Our teams retrofit equipment to improve energy use, and process engineers monitor solvent, water, and sulfur flows for further reduction. In Dipropyl Sulfide production, any gains in yield or solvent recovery make a measurable difference. Sulfur-containing by-products from purification find use in other industrial operations, decreasing what ends up as waste.

    Environmental focus also drives research into greener catalysts and oxidation alternatives. Piloting alternative feedstocks continues each year to identify routes that minimize hazardous intermediates. Upstream audits help spot suppliers capable of providing cleaner, certified raw materials. These combined efforts lead to safer, cleaner, and more reliable Dipropyl Sulfide every year.

    Tips for Product Success in Real-World Settings

    Successful use of Dipropyl Sulfide relies on practical experience as much as technical data. Temperature control proves important during transfer, particularly in large-scale operations, to minimize vapor loss and worker exposure. Our customers save time and reduce incidents by conducting regular line purges and pre-transfer checks. A little extra care during unloading goes a long way to keep process flow steady.

    Handling feedback just as seriously as batch specs, we regularly collect stories from field engineers and lab staff. One client used Dipropyl Sulfide to adjust trace sulfur content in a flavor intermediate, resulting in shorter crystallization cycles. Another reported that switching to our higher-purity grade reduced downstream purification steps, saving energy and wastewater. Each example adds to a growing knowledge base we share with new users.

    Commitment to Reliability—Built on Experience

    Making Dipropyl Sulfide carries a responsibility not just to those who use it today, but to future generations of chemists and engineers. Our facilities reflect the lessons learned from decades of manufacture and continuous improvement. Only a few companies run the full process from initial reactant to packaged liquid under one roof. We’ve seen how direct production enables rapid adjustments, deep process understanding, and long-term customer partnerships.

    Final product quality depends on small details—raw water conditioning, distillation configuration, packaging choice. Good relationships with end-users close the loop, bringing useful feedback back into the plant. Every challenge sharpened our process, and every improvement became a safeguard built into standard operating procedure.

    Experience shows that consistency, communication, and commitment create value far beyond the sum of technical facts. We continue to supply Dipropyl Sulfide for a wide range of industries, backed by the practical knowledge that only direct production can provide.