CAS 75‑08‑1

Product Overview

Ethanethiol, also commonly referred to as ethyl mercaptan, is a colorless volatile organosulfur liquid with the molecular formula C₂H₅SH. This short-chain thiol has a strong, characteristic garlic-like pungent scent and an ultra-low human odor-perception threshold. It is widely deployed as a low-dose warning odorant for combustible fuel gases, and acts as a critical thiol-containing building-block intermediate for agrochemical, pharmaceutical and multiple organic-synthesis processes.

Product Detailed Description

This short-chain thiol compound derives its distinctive functional properties from the reactive-SH mercapto functional group within its molecular structure. Its high volatility enables vapor dispersion at trace levels. Humans can detect its garlic-like warning scent at ppb-level concentrations - well before combustible-gas mixtures reach explosive limits - delivering vital early-leak-alert performance for gas-supply systems. However, the thiol group is chemically reactive. When exposed to oxygen, rusted steel pipeline surfaces or alkaline environments, ethanethiol readily oxidizes into less-odorous diethyl disulfide. This oxidation-driven odor fading represents a well-documented practical limitation for long-distance gas-transmission applications. Ethanethiol is slightly soluble in water and fully miscible with ethanol, ether and most conventional organic solvents. In addition, it is extremely flammable with a very low flash point and high vapor pressure. Its vapors are heavier than air and can form explosive mixtures with ambient air.

Commercial-grade ethanethiol is primarily offered in gas-odorant-grade and organic-synthesis-grade specifications. Odorant-grade ethanethiol imposes strict limits on disulfide impurities and non-volatile residues to maintain consistent warning-odor performance when dosed into natural-gas, LPG or town-gas pipelines. Beyond gas-odorization use cases, it serves as an essential synthetic intermediate for manufacturing organophosphorus agrochemicals, pharmaceutical compounds and various organosulfur fine chemicals. It may also be utilized as a chain-transfer agent in polymer-polymerization reactions. Given its high flammability and extreme volatility, all sampling, material-transfer and filling operations must take place inside fully ventilated explosion-proof facilities with static-dissipation safeguards in place to eliminate ignition hazards.

As a trusted chemical supply-chain provider, we enforce rigorous quality-control protocols for ethanethiol. Our different grades maintain stable main-component assays with closely-monitored disulfide by-product, moisture and volatile-impurity parameters. Sophisticated synthesis, distillation and pressure-sealed filling procedures minimize batch-to-batch variation. Consistent physicochemical specifications prevent performance drift that could otherwise result in weakened warning-odor output for gas-utility operators or disrupt target organic-synthesis reactions for fine-chemical manufacturers.

Purchasers gain tangible practical benefits by selecting our supply. First, consistent product specifications reduce repeated incoming-material laboratory testing for your technical teams and cut raw-material waste during continuous large-scale gas-odorization or organic-synthesis production. Second, we provide comprehensive export-oriented documentation including COA and MSDS to streamline cross-border customs clearance and corporate safety-audit workflows. Third, pressure-resistant explosion-proof sealed packaging supports small-scale trial-batch orders as well as high-volume bulk-industrial procurement. Our technical team can share practical guidance on safe-handling practices, recommended dosing rates and storage best practices when customers encounter real-world operational challenges.

We fully understand overseas buyers' core concerns regarding product stability, document completeness and safe transportation. Store this highly flammable volatile organosulfur liquid in pressure-tight sealed containers within cool, explosion-proof warehouse premises; the recommended storage temperature is below 15 °C. Isolate the material from heat sources, sparks, open-flame hazards, strong oxidizing agents and alkaline substances. Explosion-proof ventilation infrastructure, static-dissipation setups and appropriate chemical-resistant, flame-resistant PPE are mandatory for all material-handling tasks. Every shipment undergoes pre-shipment inspection prior to dispatch. We have extensive export experience for volatile organosulfur fine chemicals and maintain long-term stable partnerships with gas-utility enterprises and fine-chemical manufacturers worldwide. This proven track-record demonstrates our reliable supply capabilities.

CTA (Call-to-Action)

If you are sourcing qualified odorant-grade or synthesis-grade Ethanethiol (Ethyl Mercaptan) for fuel-gas odorization, agro-pharmaceutical intermediate synthesis or polymer-processing projects, please submit your inquiry. Kindly specify your target grade, purity requirements, packaging specifications and order volume. Our sales-technical team will respond within 24 hours and deliver a competitive quotation together with complete supporting-document sets. Laboratory-evaluation samples are available upon request.

FAQ

Q1: What are the major application fields of Ethanethiol (Ethyl Mercaptan)?

A1: It is widely applied as a traceadded warning odorant for naturalgas, LPG and towngas systems for gasleak detection. It also functions as a key thioltype buildingblock intermediate for agrochemical, pharmaceutical and organosulfurcompound synthesis, as well as a chaintransfer agent in polymerpolymerization workflows.

Q2: What are the main limitations of ethanethiol as a gas odorant?

A2: As a reactive thiol, ethanethiol can oxidize into low odour diethyl disulfide under oxygen rich, rusty metal or alkaline conditions, causing odor attenuation during long distance pipeline transmission. It is extremely volatile and highly flammable, which mandates strict explosion proof controls for storage and handling.

Q3: What storage and handling precautions apply to ethanethiol?

A3: Keep pressure tight sealed containers in cool explosion proof warehouses below 15 °C. Isolate from heat, sparks, open flames, strong oxidants and alkalis. Implement explosion proof ventilation and static dissipation measures; wear flame resistant and chemical resistant PPE for all material handling work.

Q4: Can you supply lab test samples for performance assessment?

A4: Yes, small quantity laboratory assessment samples are available with suitable pressure resistant explosion proof sealed packaging. Buyers are responsible for associated sample related costs and freight charges.

Q5: What export supporting documents can you provide for shipment?

A5: We can furnish COA, MSDS, packing list and commercial invoice to support your import customs clearance procedures.

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