Qingdao Zhongshitiancheng Petrochemical Co., Ltd. is a premier provider of high-purity ethanethiol and other specialized petrochemical products that serve critical functions across multiple industries. With a strategic location in Qingdao, China, the company has established itself as a reliable partner for businesses worldwide that require consistent quality and timely delivery of gas odorants and related chemicals. The company's deep expertise spans across gas odorants, defoamers, and pipeline equipment, enabling it to serve clients in the oil and gas, chemical manufacturing, and agricultural sectors with tailored solutions. By combining advanced production capabilities with rigorous quality control, Qingdao Zhongshitiancheng ensures that every shipment meets or exceeds international standards for purity and safety. To learn more about the company's history and operational philosophy, we invite you to visit our About Us page or explore the full range of our offerings on the Home page. Our team is dedicated to forging long-term partnerships built on trust, transparency, and superior product performance that consistently adds value to our customers' businesses.

Ethanethiol, commonly known as ethyl mercaptan, is an organosulfur compound with the chemical formula C₂H₅SH that plays a vital role in industrial safety and chemical synthesis worldwide. This colorless liquid possesses a strong, distinct odor often described as resembling rotten cabbage or garlic, which makes it an ideal warning agent for odorless gases that would otherwise pose undetectable risks to humans. The chemical formula of ethyl mercaptan is C₂H₅SH, consisting of an ethyl group (C₂H₅) bonded to a sulfhydryl group (SH), and understanding this ethyl mercaptan formula is fundamental to appreciating the compound's chemical reactivity and behavior in various applications. Ethanethiol is produced industrially through the reaction of ethanol with hydrogen sulfide over a catalyst, yielding a high-purity product suitable for both gas odorization and organic synthesis. Its powerful olfactory signature means that humans can detect it at concentrations as low as 0.1 parts per billion, making it exceptionally effective as a safety additive in LPG and natural gas. Beyond its critical role in safety, ethanethiol also serves as a versatile building block in organic synthesis, contributing to the production of pesticides, pharmaceuticals, and other fine chemicals that improve everyday life.

As a thiol, ethanethiol participates in a wide variety of chemical reactions that are valuable in industrial settings ranging from specialty chemical manufacturing to agricultural product development. It undergoes oxidation to form disulfides, reacts with alkyl halides to produce thioethers, and can be used to introduce sulfur atoms into organic molecules that require specific functional groups for activity. The ethyl mercaptan formula, C₂H₅SH, highlights the presence of the highly reactive thiol group, which is responsible for both the compound's strong odor and its utility in synthetic chemistry across multiple industries. When we talk about the chemical formula of ethyl mercaptan, we are referring to this precise arrangement of carbon, hydrogen, and sulfur atoms that gives the compound its unique set of physical and chemical properties. For manufacturers and processors, working with ethanethiol requires a thorough understanding of its volatility and flammability, as well as proper handling protocols that ensure workplace safety at all times. In our facility at Qingdao Zhongshitiancheng, we ensure that every batch of ethanethiol is produced and rigorously tested to meet strict purity specifications before it is released for sale to our global customer base.

The physical and chemical properties of ethanethiol make it a distinct and highly useful compound in numerous industrial contexts, from safety applications to chemical manufacturing. Ethanethiol has a boiling point of approximately 35 °C (95 °F) and a melting point of −148 °C (−234 °F), giving it a wide liquid range that facilitates convenient handling and processing at moderate temperatures in most industrial environments. Its density is about 0.84 g/mL at 20 °C, making it lighter than water, and it has a flash point of −17 °C (1 °F), indicating high flammability that necessitates careful storage and use protocols to prevent accidents. The compound is slightly soluble in water but highly soluble in organic solvents such as ethanol, acetone, and ether, which aids in its incorporation into various formulations and reaction mixtures. Understanding the chemical formula of ethyl mercaptan helps explain its polarity and solubility behavior, as the ethyl group is hydrophobic while the thiol group imparts some hydrophilicity that influences its interactions with other substances. For industrial buyers and procurement professionals, these properties directly affect decisions about storage containers, ventilation systems, and safety equipment needed for handling the material safely and efficiently in their facilities.

In terms of purity specifications, Qingdao Zhongshitiancheng supplies ethanethiol with a minimum purity of 99.5 % by gas chromatography, ensuring consistently reliable performance in all downstream applications where quality matters most. Typical impurities are limited to trace amounts of diethyl sulfide, hydrogen sulfide, and water, all of which are tightly controlled through our advanced manufacturing process and quality management systems. The ethyl mercaptan formula also informs the compound's molar mass of 62.14 g/mol, which is used in stoichiometric calculations for chemical reactions and formulation development across various industries. We provide a comprehensive certificate of analysis with each shipment that details the specific batch's purity, density, and other relevant parameters, giving our customers full documentation for their quality records. These specifications meet or exceed industry standards for gas odorant applications and chemical synthesis, giving our customers complete confidence in the product they receive from our company. Whether you require the chemical formula of ethyl mercaptan for your technical documentation or need detailed safety data sheets for regulatory compliance in your region, we supply all necessary documentation with every order we fulfill.

The most prominent and widely recognized application of ethanethiol is as an odorant for liquefied petroleum gas (LPG) and natural gas, where its potent odor serves as a critical safety measure that protects millions of people every day. Because natural gas and LPG are inherently odorless and colorless, their use in homes and industries would be extremely dangerous without a detectable warning agent to signal leaks before they reach hazardous concentrations. Ethanethiol is added at very low concentrations — typically 1 to 10 parts per million — to give these gases their characteristic "gas smell" that alerts people to potential hazards long before a dangerous accumulation can occur. This application represents the largest volume use of ethanethiol globally, and it is strictly regulated by safety authorities in every country where natural gas is distributed through public utility networks. For companies in the gas supply chain, sourcing high-purity ethanethiol from a reliable partner like Qingdao Zhongshitiancheng is essential for maintaining regulatory compliance and ensuring public safety. Moreover, the consistent quality of our ethanethiol ensures that the odorant properties remain stable throughout the product's storage and transportation lifecycle, providing dependable performance for our customers.

Beyond gas odorization, ethanethiol finds important applications as a chemical intermediate in the synthesis of pesticides, plastic additives, and rubber chemicals that support modern agriculture and manufacturing. It is used to produce the herbicide EPTC (S-ethyl dipropylthiocarbamate) and other thiocarbamate compounds that protect crops against weeds and improve agricultural yields around the world. In the pharmaceutical industry, ethanethiol serves as a building block for certain drug molecules and as a reagent in the synthesis of thiol-containing active ingredients that require specific sulfur functionalities for biological activity. It is also employed in the production of specialty polymers and as a chain-transfer agent in certain polymerization reactions where molecular weight control is critical for product performance. The ethyl mercaptan formula is key to understanding how this compound can be transformed into more complex sulfur-containing molecules through straightforward chemical reactions that are well established in industrial practice. For industrial chemists and procurement professionals, having a stable supply of consistently pure ethanethiol enables predictable reaction outcomes and product quality that directly affects their bottom line. We at Qingdao Zhongshitiancheng work closely with our clients to understand their specific application requirements and ensure that the product we deliver is optimized for their intended use and production processes.

At Qingdao Zhongshitiancheng Petrochemical Co., Ltd., we differentiate ourselves through an unwavering commitment to product quality, competitive pricing, and exceptional customer service that spans every stage of the purchasing journey from initial inquiry to final delivery. Our ethanethiol is manufactured under strict quality management systems that are regularly audited to ensure compliance with international standards such as ISO 9001, giving our customers confidence in our processes. We source the highest-grade raw materials and employ advanced synthesis and purification technologies to achieve consistent purity above 99.5 %, batch after batch, without the variability that plagues lesser suppliers. This level of quality gives our customers the confidence that their end products — whether odorized gas or synthesized chemicals — will perform reliably and safely in their intended applications. Furthermore, our rigorous testing protocols mean that every drum and ISO tank is sampled and analyzed before it leaves our facility, leaving nothing to chance and ensuring complete traceability. Our commitment to quality is not just a promise; it is a systematic part of how we operate every single day, embedded in our culture and processes from the production floor to the shipping dock.

We offer our ethanethiol at prices that are among the most competitive in the global market, thanks to our efficient production processes, strong supplier relationships, and optimized logistics network that minimize unnecessary costs. Our pricing model is transparent and straightforward, with no hidden fees or unexpected charges, and we offer volume discounts for regular and large-quantity buyers who need consistent supply over extended periods. We also provide flexible payment terms to accommodate the financial planning needs of our diverse client base, from small specialty chemical distributors to large multinational corporations with complex procurement systems. Our sales and technical support teams are available to assist with product selection, application advice, and any questions you may have about handling or using ethanethiol in your specific processes. To browse our full range of products and see detailed specifications for all our chemical offerings, please visit our Products page where you will find comprehensive information for your procurement needs. We believe that true value comes from combining top-tier quality with fair pricing and responsive service, and that is exactly what we deliver to every customer who chooses to work with our company.

Quality control is the backbone of our operations at Qingdao Zhongshitiancheng, and we have implemented a multi-layered inspection and testing program that covers every batch of ethanethiol from raw material intake through production to final shipment preparation. Our on-site laboratory is equipped with state-of-the-art gas chromatography systems that measure purity and identify trace impurities with high precision, ensuring that every batch meets our stringent specifications before release. In addition to purity analysis, we conduct density, moisture, and color tests, as well as stability assessments under various storage conditions that simulate real-world logistics scenarios. Each batch is assigned a unique lot number that allows full traceability throughout the supply chain, and we retain samples for a minimum of two years for quality assurance purposes and customer reference. We also perform periodic third-party audits to verify that our processes and results meet or exceed the requirements of our global customer base and regulatory bodies. This comprehensive approach to quality control leaves no room for error and ensures that every shipment we deliver is of the highest possible standard for our customers around the world.

Safety is paramount in the handling, storage, and transportation of ethanethiol due to its flammable and malodorous nature, and we take every precaution to protect our employees, our partners, and the communities where we operate. Our facilities are designed with explosion-proof electrical equipment, continuous gas monitoring systems, and automatic ventilation controls that maintain a safe working environment at all times during production and handling. All personnel involved in handling ethanethiol receive comprehensive training on its hazards, proper personal protective equipment (PPE) use, and emergency response procedures that are regularly drilled and updated. We provide detailed Safety Data Sheets (SDS) with every shipment, and our logistics partners are carefully selected based on their expertise in transporting hazardous materials across international borders. For storage, we recommend keeping ethanethiol in a cool, well-ventilated area away from heat sources, oxidizers, and open flames to maintain safety and product integrity. Our team can advise on the best storage practices for your specific facility and help you develop a safety plan that meets all local regulations and industry standards. For any safety-related questions or additional documentation you may require, please reach out to us through the Contact page on our website.

We offer a wide variety of packaging options for ethanethiol to suit the needs of different customers, from small laboratory quantities for research and development to bulk industrial volumes for continuous production operations. For smaller orders, our standard packaging is 150 kg or 200 kg steel drums that are specially lined and sealed to prevent leakage and minimize vapor release during storage and transport across long distances. These drums are properly labeled with hazard warnings, product identification, and handling instructions in accordance with international dangerous goods regulations that govern chemical transportation worldwide. For larger volume requirements, we offer ISO tank containers with a typical capacity of 20–22 metric tons, which provide a cost-effective and efficient solution for bulk transport that reduces per-unit shipping costs significantly. Each ISO tank is equipped with pressure relief devices and liquid-level indicators, and is inspected and certified before each use to ensure it meets all safety and quality standards for hazardous material transport. This variety of packaging options ensures that we can accommodate any order size while maintaining the highest safety and quality standards for our customers globally.

Our global shipping network covers most major destinations in Asia, Europe, the Americas, and the Middle East, with reliable transit times that allow our customers to plan their inventory efficiently and avoid costly production delays. We handle all export documentation, including the bill of lading, certificate of origin, packing list, and any special customs paperwork required for hazardous chemicals like ethanethiol in different countries. For customers concerned about the strong odor during handling, we can provide guidance on odor control measures and recommend appropriate PPE to ensure workplace comfort and safety. We also offer to customize packaging labeling with your company information if you require private labeling for distribution purposes in your local market. Our logistics team coordinates closely with experienced freight forwarders who specialize in chemical transportation to ensure that your order arrives safely, on time, and in perfect condition every time. Whether you need a single drum for R&D work or multiple ISO tanks for continuous production supply, we have the packaging and shipping capability to meet your requirements with professionalism and reliability.

Choosing the right supplier for ethanethiol is a critical business decision that impacts production reliability, product quality, and overall operational safety for companies across multiple industries. Qingdao Zhongshitiancheng Petrochemical Co., Ltd. brings over a decade of specialized experience in the production and distribution of sulfur-containing chemicals, giving us a depth of technical knowledge that few competitors can match in this specialized market. Our customers choose us because we deliver consistent quality — every batch meets our published specifications because we control the entire process from raw material sourcing through final shipment with no gaps or compromises. They choose us because we offer competitive pricing that improves their bottom line without compromising on product performance or delivery reliability in any way. And they choose us because our service is responsive, flexible, and focused on solving their problems, not just selling them chemicals and moving on to the next customer. These three pillars — quality, price, and service — form the foundation of every customer relationship we build and sustain over the long term.

We pride ourselves on our proven ability to build long-term relationships with clients across different industries and geographic regions who value consistency and partnership in their supply chain. Our team understands the regulatory landscape for gas odorants and industrial chemicals in multiple countries, enabling us to help our customers navigate compliance issues and avoid costly regulatory pitfalls. We are constantly investing in our production capabilities and quality systems to ensure that we remain at the forefront of the ethanethiol market and continue to meet evolving industry demands. When you work with us, you get a partner who is genuinely invested in your success and who will go the extra mile to ensure that you are satisfied with every aspect of the transaction from start to finish. To start a conversation about your ethanethiol requirements and how we can serve your business, please visit our Contact page or reach out to our sales team directly for a prompt response. We look forward to demonstrating why Qingdao Zhongshitiancheng is the trusted choice for high-quality ethanethiol for businesses around the world.

We warmly welcome inquiries from prospective customers around the world and are ready to provide detailed information, current pricing, and technical support for your ethanethiol needs at any time. You can reach our dedicated sales team by phone at the numbers listed on our contact page or by email for a prompt response during regular business hours in our Qingdao office. Our team typically responds to all inquiries within 24 hours, providing you with the accurate information you need to make an informed purchasing decision without unnecessary delays. We can also arrange a virtual meeting to discuss your specific requirements in detail and provide sample documentation or product samples if needed for your evaluation process. For added convenience, you can fill out the contact form on our website with your name, company details, and volume requirements, and we will get back to you with a tailored quotation that matches your needs. We are located in Qingdao, China, and warmly welcome visitors who wish to tour our facilities, meet our team in person, and see our quality systems in action. Let us show you how Qingdao Zhongshitiancheng Petrochemical Co., Ltd. can become your most reliable partner for high-quality ethanethiol and related petrochemical products that drive your business forward. Contact us today to take the first step toward a productive and lasting business relationship built on trust, quality, and mutual success.