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Propyl disulfide (also known as Dipropyl disulfide or 1-(propyldisulfanyl)propane, CAS 629-19-6) is an essential organosulfur compound widely recognized for its symmetric aliphatic disulfide structure (C₆H₁₄S₂). Serving as a critical sulfiding agent, pharmaceutical synthetic intermediate, and flavor building block, maintaining stringent chemical specifications is vital for downstream stability and catalytic efficacy.
Our state-of-the-art manufacturing facilities implement continuous fractional distillation to minimize trace sulfur compounds, moisture, and unreacted thiols.
| Parameter | Standard Grade | High-Purity Grade |
|---|---|---|
| Purity (GC) | ≥ 98.0% | ≥ 99.5% |
| 1-Propanethiol | ≤ 0.5% | ≤ 0.05% |
| Water Content (KF) | ≤ 0.1% | ≤ 0.02% |
| Non-volatile Residue | ≤ 0.01% | ≤ 0.005% |
As a major manufacturer and global supplier of CAS 629-19-6 in China, JIMPOCHEM provides integrated chemical solutions designed to optimize performance across critical industrial sectors.
In hydrotreating (HDT) and hydrocracking units, refinery catalysts containing Cobalt-Molybdenum (CoMo) or Nickel-Molybdenum (NiMo) must undergo in-situ presulfiding to convert metal oxides into highly active metal sulfides. Dipropyl disulfide (CAS 629-19-6) serves as an exceptional sulfur donor, releasing active sulfur controlledly at lower temperatures than DMDS, preventing premature reduction of catalyst active sites.
Utilized extensively in FEMA-registered flavor compositions, CAS 629-19-6 offers authentic alliacious notes (fresh onion, roasted garlic, and savory vegetable profiles). High-purity grades synthesized by JIMPOCHEM remove volatile thiol residues, ensuring exact organoleptic precision required by world-leading flavor synthesis houses.
Propyl disulfide acts as a versatile building block for crop protection chemicals and active pharmaceutical ingredients (APIs). It enables selective propylsulfenyl group insertion ($\text{R-S-Pr}$) during nucleophilic replacement reactions, forming key intermediates for sulfoxide and sulfone derivative synthesis.
Navigating the global market dynamics for specialty organosulfur compounds requires securing supply resilience, price stability, and international regulatory compliance.
Global demand for CAS 629-19-6 has expanded alongside catalyst upgrading cycles in North American and European refineries, as well as burgeoning Asian agrochemical manufacturing hubs. However, raw material availability for 1-propanethiol and elemental sulfur fluctuated dramatically in recent years.
JIMPOCHEM mitigates supply chain vulnerability by integrating backward into precursor synthesis. Located in the Chemical Industry Park of Jinan City, Shandong Province, our 500+ acre facility ensures uninterrupted raw material pipelines and continuous batch capacity.
Our technical team, consisting of senior chemical engineers with 16+ years of specialized experience, utilizes catalytic oxidative coupling to deliver consistent purity.
Dipropyl disulfide is primarily synthesized via the controlled oxidation of 1-propanethiol using mild, eco-friendly oxidant systems (such as hydrogen peroxide over transition metal catalysts or air oxidation under alkaline phase-transfer conditions):
Precision temperature monitoring (<35 °C) prevents the over-oxidation of disulfides into thiosulfinates or thiosulfonates, protecting chemical integrity.
Every lot manufactured by JIMPOCHEM is subjected to robust analytical testing prior to inventory release:
Real-world field validation across diverse global markets demonstrating operational excellence and cost reductions.
APPLICATION: Hydrotreating Presulfiding
A major refinery substituted conventional presulfiding agents with high-purity CAS 629-19-6 supplied by JIMPOCHEM. Results showed a 15% reduction in startup activation time and controlled exotherm release, protecting catalyst life cycles while achieving complete sulfide conversion.
APPLICATION: Savory Flavor Formulations
An international flavor producer integrated ultra-pure Dipropyl Disulfide (≥99.5%) into roasted meat profile seasonings. The absence of trace mercaptans restored organoleptic fidelity without off-odors, leading to batch consistency across global bottling operations.
APPLICATION: Insecticide Intermediate
By switching to JIMPOCHEM’s ISO-tank supply of CAS 629-19-6, an agrochemical plant achieved a 22% savings in raw material costs alongside zero batch-to-batch variance in alkylation yield.
Navigating international chemical compliance is paramount for seamless cross-border commerce. JIMPOCHEM provides full documentation packages for CAS 629-19-6:
Dipropyl disulfide must be stored in cool, dry, well-ventilated locations away from strong oxidizing agents and ignition sources:
JIMPOCHEM CO., LTD was established in 2010 and is headquartered in the Chemical Industry Park of Jinan City, Shandong Province. Spanning over 500 acres, we are a professional chemical raw material manufacturer integrating research and development, production, sales, and technical services.
Leveraging decades of chemical expertise, we have established strategic partnerships with primary upstream petrochemical suppliers. Our modern Jinan manufacturing base utilizes intelligent, automated control systems to balance large-scale bulk production with flexible custom orders.
In alignment with global "dual-carbon" sustainability goals, JIMPOCHEM employs eco-friendly synthesis pathways, closed-loop solvent recovery, and advanced zero-discharge wastewater treatment facilities to support downstream client green transformations.
Driving continuous innovation in sulfur chemistry through digital manufacturing and green catalysis.
Transitioning batch oxidative processes to flow microreactors, eliminating thermal runaway risks, reducing energy consumption by 30%, and achieving ultra-narrow purity distributions.
Developing bio-propanol synthetic pathways to derive bio-based 1-propanethiol, paving the way for 100% renewable Dipropyl Disulfide grade options.
Partnering with global refineries to deploy predictive AI models that calculate exact CAS 629-19-6 injection rates during catalyst activation, minimizing sulfur slip and emissions.
Discover additional high-performance ingredients manufactured and exported globally by JIMPOCHEM.
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