Products

Hydrogen Chloride [Anhydrous]

    • Product Name: Hydrogen Chloride [Anhydrous]
    • Alias: Hydrochloric acid
    • Einecs: 231-595-7
    • 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

    568737

    Chemical Name Hydrogen Chloride [Anhydrous]
    Chemical Formula HCl
    Molar Mass 36.46 g/mol
    Cas Number 7647-01-0
    Appearance Colorless to slightly yellow gas
    Odor Pungent, irritating
    Boiling Point -85.05 °C
    Melting Point -114.2 °C
    Density 1.49 g/L (at 0 °C, 1 atm)
    Solubility In Water Very soluble
    Vapor Pressure 40.6 atm (at 0 °C)
    Un Number 1050

    As an accredited Hydrogen Chloride [Anhydrous] factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing Hydrogen Chloride [Anhydrous], 800g, supplied in a high-pressure steel cylinder with secure valve, labeled with hazard and safety information.
    Shipping Hydrogen Chloride [Anhydrous] is shipped as a compressed, liquefied gas in high-pressure, corrosion-resistant cylinders. The cylinders are tightly sealed and clearly marked with hazard labels indicating "Toxic Gas" and "Corrosive." Transportation complies with regulations (such as DOT, IMDG, IATA) to ensure safe handling, storage, and emergency procedures.
    Storage Hydrogen Chloride (Anhydrous) should be stored in tightly closed, corrosion-resistant cylinders or containers, in a cool, dry, and well-ventilated area away from moisture and incompatible substances such as alkalis and oxidizers. Keep storage areas secure and clearly labeled, avoiding direct sunlight and sources of heat or ignition. Use proper gas safety protocols and regularly check for leaks or damage.
    Application of Hydrogen Chloride [Anhydrous]

    Applications of Hydrogen Chloride [Anhydrous] in Industrial Manufacturing

    Hydrogen chloride [Anhydrous] serves as a primary reagent and process agent across key chemical industries. Our direct manufacturing expertise supports critical downstream processes that demand stringent control over gas purity, handling technology, and compliance with regulatory frameworks worldwide.

    1. Pharmaceutical Active Ingredient Synthesis

    In API manufacturing, hydrogen chloride gas acts as a hydrochlorinating agent for amine hydrochlorides, acid chlorides, and other intermediates. Precision gas introduction controls both stoichiometry and product salt quality. Top manufacturers utilize high-purity anhydrous gas to ensure trace impurity profiles meet strict pharmacopeial specifications. Batchwise dosing and microprocessor-regulated gas flow systems maintain optimal yields and reproducible crystallization. The downstream workup includes nitrogen purging, salt filtration, and multi-stage recrystallization.

    Industry compliance standards

    • USP, EP, JP monographs for hydrochloride API forms
    • ICH Q7 GMP for Pharmaceutical Manufacturing
    • FDA 21 CFR Parts 210/211
    • EMA EudraLex Volume 4 part II for APIs

    Typical usage ratio

    • 1.0–1.2 mol HCl per mol amine for API salt formation; adjusted for solubility/end-point pH (batch-specific)

    Downstream process integration

    • Injected into reaction vessels during salt-forming stage (secondary amines, alkaloids, quaternary ammonium compounds)

    Final product types

    • Pharmaceutical hydrochloride salts (e.g., diphenhydramine HCl, ranitidine HCl, metformin HCl)

    2. Vinyl Chloride Monomer (VCM) and PVC Production

    In the chlor-alkali industry, hydrogen chloride is required for oxychlorination processes to produce vinyl chloride monomer. This reaction, conducted in fluidized-bed or fixed-bed reactors, demands accurate gas-phase metering and rapid dispersion with ethylene and oxygen over copper chloride catalysts. Operators carefully monitor off-gas recirculation, temperature, and feedstock ratios to maximize chlorination reaction rates and minimize polychlorinated byproducts. Hydrogen chloride delivery infrastructure—titanium-lined piping, dry storage, scrubber systems—ensures both worker safety and plant efficiency.

    Industry compliance standards

    • ASTM D2157 for VCM production quality
    • REACH and OSHA process safety management
    • ISO 14001 Environmental Management for manufacturing emissions
    • API 560/ANSI for process equipment

    Typical usage ratio

    • Ethylene:HCl:O₂ ratio approximately 1:1.2:0.8 (by mole) optimized to process design

    Downstream process integration

    • Fed directly into oxychlorination reactors before quenching and VCM stripping steps

    Final product types

    • Vinyl chloride monomer (VCM), suspension and emulsion grade polyvinyl chloride (PVC) resins

    3. Isocyanate Manufacturing for Polyurethane Production

    Leading producers of methylene diphenyl diisocyanate (MDI) and toluene diisocyanate (TDI) rely on controlled hydrogen chloride addition for phosgenation—the critical reaction that generates isocyanate functionality from amine precursors. High-pressure phosgenators facilitate precise conversion, with anhydrous HCl emerging as both a byproduct and stream modifier. Efficient HCl handling, scrubbing, and on-site reuse strategies reduce both costs and off-gas emissions. Our manufacturing-grade gas meets purity standards that prevent side-reactions affecting isocyanate color and reactivity.

    Industry compliance standards

    • ISO 9001 for quality management
    • REACH/CLP for chemical registration and workplace safety
    • Responsible Care® for safe handling in bulk chemical plants
    • American Chemistry Council MDI/TDI production best practice

    Typical usage ratio

    • Up to 1.1 mol HCl evolved per mol amine processed; monitored based on amine feedstock and reactor design

    Downstream process integration

    • Generated and removed during phosgenation of aromatic and aliphatic amines in isocyanate reactors

    Final product types

    • MDI and TDI monomers, prepolymers for PU foams, elastomers, coatings

    4. Etching Agent in Semiconductor and Electronics Manufacturing

    Anhydrous hydrogen chloride is used by wafer fabs and semiconductor foundries as a dry-etching gas in controlled-atmosphere chambers. It removes native oxides and metallic contaminations from silicon wafers at elevated temperatures without introducing moisture, which would compromise device yields. Process engineers regulate flow rates and surface exposure timing to precisely tune etch rates, avoid micro-pitting, and maintain substrate purity. Only electronics-grade gas, meeting exacting trace metal limits, is allowed in such environments.

    Industry compliance standards

    • SEMI C41 (hydrogen chloride specifications for semiconductor applications)
    • ISO 14644-1 for cleanroom control
    • JEITA regulations for microelectronics chemical inputs
    • IPC-J-STD-001 for substrate reliability

    Typical usage ratio

    • Flow rates from 10 to 50 sccm per wafer batch, modulated to tool platform and wafer size, with process cycles lasting 2–10 minutes

    Downstream process integration

    • Delivered through gas cabinets into vacuum chambers for in-situ dry etching or pre-epitaxial surface preparation

    Final product types

    • DRAM and flash memory ICs, power semiconductors, MEMS wafers, silicon-on-insulator devices

    5. Alkyl Chloride and Organic Intermediate Manufacturing

    Many industrial producers use anhydrous hydrogen chloride for alkyl chloride synthesis, including specialty intermediates like ethyl chloride, tert-butyl chloride, and benzyl chloride. Operators conduct controlled gas-liquid or gas-vapor reactions using fixed-bed or bubble column reactors under strict temperature and agitation conditions. Accurate dosing prevents over-chlorination and unwanted byproduct formation. Continuous exhaust scrubbing and off-gas treatment help meet site environmental requirements.

    Industry compliance standards

    • OECD Guidelines for chemical plant safety
    • ISO 9001:2015 for process plant operations
    • EU Industrial Emissions Directive
    • Local fire and air quality regulations

    Typical usage ratio

    • 1–1.2 mol HCl per mol alcohol or hydrocarbon, titrated according to real-time analytics and end-point conversion

    Downstream process integration

    • Introduced to stirred tank, plug-flow, or packed bed reactors at controlled flow rates after initial substrate charging

    Final product types

    • Alkyl chlorides (ethyl chloride, tert-butyl chloride, benzyl chloride), pharmaceutical and agrochemical intermediates

    6. Chemical Cleaning and Pickling in Metal Surface Treatment

    In metal finishing lines, hydrogen chloride gas is dissolved onsite to prepare concentrated hydrochloric acid baths. Operators closely regulate acidity to remove oxides, mill scale, and industrial residues from carbon steel, alloy, and specialty metals. Inline dosing and process feedback maintain bath efficiency while minimizing acid mist and emission risks. Closely monitored waste management meets regulatory standards for spent acid neutralization and recovery.

    Industry compliance standards

    • ASTM A380 for cleaning of stainless and carbon steel
    • ISO 9001 quality management
    • OSHA 29 CFR 1910.119 (Hazardous Chemicals in Metal Processing)
    • Local wastewater and emission regulations

    Typical usage ratio

    • HCl gas dissolved to target concentrations of 18–33% HCl by weight in pickling tanks; ratio depends on incoming metal oxide load

    Downstream process integration

    • Injected or bubbled into acid tanks via in-line spargers before immersion of metal workpieces

    Final product types

    • Pickled steel coils, steel wire rod, tube and pipe products, surface-prepared substrates for further plating or coating

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    Certification & Compliance
    More Introduction

    Hydrogen Chloride [Anhydrous]: Real-World Manufacturing Perspective

    Purpose and Scope of Production

    As direct manufacturers of Hydrogen Chloride [Anhydrous], we see daily why this gas remains central to a range of industrial processes and research goals. From our viewpoint, the product is more than just a chemical compound; it serves as a tangible solution for customers who need high reactivity and purity. Our focus goes beyond meeting orders—it is about ensuring each cylinder or bulk tank we produce reflects safe handling, a reliable supply chain, and stringent quality controls adapted to practical challenges in the field.

    Model and Specifications We Supply

    Our hydrogen chloride [Anhydrous] is made through high-efficiency synthesis and refined purification steps designed for demanding users in sectors like electronics, pharmaceuticals, and chemical processing. The product comes compressed in pressure-resistant cylinders, stored and transported as a dry, colorless gas. We target impurities measured in parts per million, responding to feedback from clients who work at scales where every contaminant counts. Product purity levels above 99.99% are routine, based on the specific analytical needs shared by our customers, such as those involved in semiconductor etching or production of active pharmaceutical ingredients.

    We provide technical data, near-real-time analytics, and batch traceability for all orders because we have learned that surprises in purity or performance simply cause costly downtime. Beyond standardized volumes and pressures, we can customize delivery arrangements and documentation for special requirements, like ultra-dry, low water content anhydrous hydrogen chloride. Years of direct interaction with plant operators and R&D teams taught us that flexibility in packaging and logistics plays an equally essential role as the chemical itself.

    Real-World Usage: How Customers Apply Anhydrous HCl

    The main uses we observe are in hydrochlorination reactions, semiconductor processing, and surface treatment. Each end-use calls for strict moisture control, high reactivity, and safe transfer systems. We manufacture anhydrous hydrogen chloride specifically for environments where any water, oxygen, or organic vapor reduces yields or interferes with sensitive equipment.

    In electronic manufacturing, our product enables precise control over silicon etching and precision cleaning. We continually upgrade cylinder valve systems and offer leak detection support because the industry expects not just purity, but total competency in safe delivery. Customers in isocyanate production and pharmaceutical synthesis rely on our product to ensure reactions proceed efficiently, keeping by-products and process interruptions to a minimum. As manufacturers, our close process monitoring addresses one recurring customer concern: batch-to-batch consistency and documented quality at every shipment.

    Handling and Safety: Operational Lessons

    Experience teaches tough lessons about safe management of anhydrous hydrogen chloride. This gas proves unforgiving if mishandled. After years supplying both high-volume and custom needs, we have seen how facility design, employee training, and emergency controls must grow alongside usage rates. We build safety features into every step, from cylinder stamping systems that verify fill dates to redundant, tamper-evident valve seals.

    Particular emphasis goes on training end users to recognize frost formation, leakage, and regulator compatibility. We regularly partner with industrial clients to walk through their supply rooms, checking for rusting, outdated transfer hoses, or inadequate venting—not simply shipping product and wishing them good luck. Mistakes caused by inattention or bad storage can lead to costly evacuations, equipment corrosion, and lost material. We share firsthand stories of incidents averted or lessons learned, so everyone understands the reasons behind rigorous safety policies. Our service doesn’t end at delivery because a manufacturer’s reputation travels farther than any marketing brochure.

    Purity Control: Exceeding the Norms

    One fact remains constant: subpar hydrogen chloride [Anhydrous] causes system failures in critical sectors. Our internal labs don’t just benchmark to international standards; every batch is monitored by multiple detection techniques, including gas chromatography and moisture analyzers. Working with pharmaceutical innovators and electronics leaders, we have participated in root-cause investigations to eliminate supplier-related contamination. These projects confirmed that minute traces of water, sulfur, or organic carryover immediately manifest as process impurities.

    Some of our long-term clients share detailed reaction outcomes so we can trace every variable, refine our purification process, and continually improve yield and reproducibility. Internal R&D projects focus on new desiccant systems or advanced filtration to stay ahead of evolving needs. We encourage clients to challenge our specifications, because only feedback from practical application leads to meaningful advances.

    Comparison with Other Hydrogen Chloride Forms

    Plenty of buyers think of hydrochloric acid first, but anyone facing water sensitivity knows its limits. Hydrogen chloride [Anhydrous] isn’t just hydrochloric acid in a different package. The gas form excludes water entirely, making it essential for anhydrous syntheses, dry etching, and laboratory work where moisture triggers side-reactions or corrodes equipment.

    Production of high-purity anhydrous gas requires separate infrastructure—dedicated, corrosion-resistant transfer lines, leak-proof high-pressure containers, and continuous monitoring for air and water ingress. Many treat hydrochloric acid as interchangeable, only to discover later that even trace moisture ruins yields, affects catalyst life, or creates unintended hazardous byproducts. The anhydrous version we produce supports those who push the boundaries of process control and precision, whether in microelectronics, advanced surface chemistry, or specialty organic synthesis.

    Why Direct Manufacturing Matters

    Oversight changes everything. Every gram leaving our facility carries the weight of expertise formed through equipment investments and problem-solving. Years of hands-on manufacturing have shown us how even minor tweaks—like gas cylinder metallurgy or multi-stage drying beds—have outsize impact on purity, stability, and customer outcomes, especially at scale. We back every filled tank and technical support call with operational data derived from our own systems, not from a trading desk or secondary source.

    Customers routinely share the problems they’ve faced with off-spec gas, ranging from mislabeling to unexplained residue in sensitive glassware or process lines. In response, we have deepened our raw material audits and expanded cross-checking between production and quality teams. Our commitment to in-house manufacturing ensures clear traceability, authentic certificates, and an open-door policy for customer audits.

    Unique Challenges and Lessons Learned

    Unlike bulk commodity acids or solvents, anhydrous hydrogen chloride calls for special handling from every direction—storage, transport, metering, and venting. We continually improve operational safeguards based on field feedback and accident reports. Installation errors, broken seals, or exposure to high humidity have all contributed to small-scale incidents in real industrial settings. These experiences compelled us to create robust support and supply chain resilience, including backup cylinders, specialized regulators, and fast dispatch for technical troubleshooting.

    Shipping regulations differ by region, often changing, and each destination country brings fresh compliance checks. We commit resources to understand and meet evolving export controls, environmental rules, and documentation requirements, recognizing that delays stall vital research and manufacturing timelines. Close work with regulators and logistics specialists cuts through many of the common supply disruptions our customers report.

    Environmental Responsibility in Practice

    Our industry faces both regulatory and ethical pressure to reduce emissions and waste. We invest not just in compliance, but in real engineering: closed-loop filling, efficient vapor recovery, and minimization of accidental releases. The discipline needed to safely handle hydrogen chloride [Anhydrous] aligns with our broader goal to minimize community risk, reduce worker exposure, and promote sustainable resource use. As chemical manufacturers, we bear responsibility to leave a safer footprint, and ongoing audits help identify small changes—lower-energy purification, cylinder recycling, and improved transport protocols—that add up over thousands of delivery cycles.

    Customers often ask about lifecycle impacts and waste minimization plans, especially those under scrutiny for environmental performance in their own supply chains. We share the methods and metrics by which we minimize, control, and track emissions, and welcome open dialogue with partners pursuing green chemistry goals. Sustainable manufacturing isn’t achieved through slogans, but through measurable practices and continuous improvements throughout all stages, from raw material sourcing to final gas delivery.

    Supporting Customer Innovation

    Some of our most valuable partnerships have started with a technical challenge: an unexpected byproduct in a pharma synthesis, narrow operating margins in a new coating process, or difficulties integrating gas delivery with automated tools. As a direct manufacturer, we can adjust fill pressures, cycle times, and analytical controls to match niche research needs—capabilities often missing from distributors offering only bulk shipments or standardized specs.

    Collaboration with end users keeps our R&D pipeline relevant and productive. Recent projects have included trialing new purification media to drive impurity levels below 1 ppm, developing small-volume delivery systems for bench-scale research, and working alongside tech transfer teams as they bring lab results to pilot scale. In return, our products evolve to support both classic and emerging applications, from OLED production to advanced catalysis. Our technical team values every call, site visit, and field report as a chance to tighten process controls and anticipate the next wave of industrial needs.

    Addressing Challenges in Availability and Continuity

    Material shortages, shipping disruptions, and regulatory bottlenecks can halt entire production lines. By keeping inventory at multiple distribution sites and expanding regional partnerships, we insulate clients from unpredictability, offering a level of service that comes only from full-lifecycle control. We maintain redundancies across filling lines, logistics teams trained in hazardous materials, and direct communication with clients to warn of any developing supply chain risks in real time.

    Lessons from global disruptions remind us that short-term solutions rarely resolve long-term risks. Our deep reserves and established vendor relationships mean we can meet unusual order surges or urgent supply gaps with minimum delay. In some cases, we’ve coordinated directly with customer operations and legal teams to pre-approve emergency shipments or rework documentation to meet local standards. Experience and transparency matter most in periods of uncertainty.

    Perspectives from the Shop Floor

    No process improvement, equipment investment, or procedural update comes from theory alone. We prioritize insights from technicians and operators who watch every fill, every valve, and every shipment. Employee feedback has improved cylinder changeover routines, identified tricky moisture intrusion points, and led to targeted training in leak prevention. Management walks the floor regularly—problems shrink when seen up close, and our open reporting culture transforms near misses and small errors into long-term operational gains.

    Direct communication channels, daily production huddles, and careful review of incident logs feed our continuous improvement cycle. We invest in operator skill development, not only for regulatory compliance but as the backbone of every safe delivery. Growing a skilled team and listening to firsthand experience prevents accidents, ensures consistent quality, and delivers client confidence. Our job does not end at the loading bay or with a signed delivery report.

    Continuous Improvement: The Path Forward

    We remain committed to refining every aspect of our hydrogen chloride [Anhydrous] business—process design, logistics, environmental control, and technical support. New product grades, better cylinder technologies, and faster quality analytics all start with genuine needs observed in the field or discussed directly with users. The role of a chemical manufacturer goes beyond making product; it requires confronting real-world problems and engineering better solutions, batch by batch and order by order.

    We embrace each challenge as an opportunity: cleaner delivery, lower trace contaminant thresholds, safer shipments, or more responsive information flow. Our collective learning mindset informs our recruitment, our daily meetings, and every interaction with staff and clients. We encourage those considering hydrogen chloride [Anhydrous] for their process—whether new to the material or confronting recurring supply or purity headaches—to share precise needs and problems. The expertise we have built serves best in dialogue, not abstraction.

    Looking Ahead with Purpose

    Markets, regulations, and technologies keep changing. Our long-term focus stays the same: make hydrogen chloride [Anhydrous] fit for the future, with a level of reliability and care that matches its risks and rewards. We serve those pushing progress in science and industry, supporting them by listening, learning, and delivering real improvements in purity, delivery, and technical service.

    Manufacturing this material at scale keeps us at the intersection of safety, performance, and trust. We bring experience, transparency, and a proven record to every client relationship, fueling advancement for those who require something better than off-the-shelf offerings. Our story continues, written through every partnership and every lesson gained in production and application.

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