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Chlorine

    • Product Name Chlorine
    • Alias Chlorine
    • Einecs 231-959-5
    • 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

    378689

    Name Chlorine
    Chemical Formula Cl2
    Molar Mass 70.90 g/mol
    Appearance Yellow-green gas
    Odor Pungent, irritating odor
    Melting Point -101.5 °C
    Boiling Point -34.04 °C
    Density 3.2 g/L (at 0 °C, 1 atm)
    Solubility In Water 0.652 g/100 mL (at 25 °C)
    Oxidation State 0 in Cl2, varies in compounds
    Cas Number 7782-50-5

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

    Packing & Storage
    Packing Chlorine is packaged in 50 kg steel cylinders, painted yellow, with embossed hazard labels, secure valve caps, and safety instructions.
    Shipping Chlorine is shipped as a compressed, liquefied gas in steel cylinders, ton containers, or tank cars designed to withstand high pressure. Shipments require proper labeling and hazard communication due to its toxic and corrosive nature. Strict safety protocols are followed to prevent leaks or accidental exposure during transport and handling.
    Storage Chlorine should be stored in tightly sealed, corrosion-resistant containers, preferably made of steel, in a cool, dry, and well-ventilated area away from direct sunlight and incompatible substances such as ammonia and hydrocarbons. Storage areas must be equipped with appropriate ventilation and safety equipment to handle leaks or spills, and containers should be regularly inspected for signs of corrosion or damage.
    Application of Chlorine

    Applications of Chlorine in Industrial Manufacturing

    As a primary manufacturer of chlorine, we supply high-purity product grades supporting established industrial processes in core downstream markets. Our materials are backed by batch traceability, regulatory support, and technical documentation matched to your sector’s compliance and quality assurance requirements. Explore below how our chlorine integrates into diverse chemical production channels, with detailed supply chain information for procurement, production, and quality teams.

    1. Water Treatment Chemicals Production

    Chlorine remains indispensable in the synthesis of sodium hypochlorite and calcium hypochlorite, fundamental compounds for water disinfection applications worldwide. Downstream producers feed chlorine under controlled conditions into alkaline solution reactors to produce liquid and solid disinfectants used in municipal drinking water, cooling towers, and swimming pool sanitation. Accurate control of reaction stoichiometry and dilution parameters ensures product conformity to civil, food industry, and health sector requirements.

    Industry compliance standards

    • ANSI/AWWA B300 for Hypochlorites
    • NSF/ANSI 60 Certification for Drinking Water Treatment Chemicals
    • U.S. EPA Guidelines for Drinking Water Additives
    • EN 901 (EU) – Chemicals for the Treatment of Water Intended for Human Consumption

    Typical usage ratio

    • Chlorine charged at 0.7–1.1 kg per 1 kg sodium hydroxide in sodium hypochlorite synthesis; adjustment based on target product strength (typically 12–15% NaOCl for bulk applications)
    • Calcium hypochlorite plant operations: Chlorine addition at 0.9–1.2 kg per 1 kg hydrated lime

    Downstream process integration

    • Continuous gas injection into alkaline reactors (batch or flow systems)
    • Automated monitoring of reagent ratios, venting, and cooling to control byproduct formation
    • Dechlorination and filtration prior to packaging for environmental release compliance

    Final product types

    • Sodium hypochlorite solutions (bulk, packaged, on-site generation systems)
    • Calcium hypochlorite granules, pellets, or tablets
    • Drinking water and industrial disinfection agents

    2. PVC Resin Synthesis

    Chlorine serves as a core feedstock for vinyl chloride monomer (VCM) synthesis, the basis of polyvinyl chloride (PVC) resins. In large-scale plants, producers combine chlorine with ethylene in direct chlorination and oxychlorination steps to yield ethylene dichloride, which is then cracked to VCM and polymerized. Grain size, molecular weight distribution, and resin whiteness depend on consistent upstream chlorine purity and metering.

    Industry compliance standards

    • ISO 9001 Quality Management for resin supply
    • REACH Regulation (EC) No 1907/2006 for VCM and PVC producers
    • ASTM D1784 for Rigid PVC Compounds
    • GB/T 5761 (China) – Polyvinyl Chloride Resin (Suspension Method)

    Typical usage ratio

    • Direct chlorination: 1.0–1.1 metric tons chlorine per 1 metric ton ethylene
    • Oxychlorination: 0.45–0.55 metric tons chlorine per 1 metric ton VCM output
    • Overall, chlorine usage typically ranges from 0.82–0.99 metric tons per 1 metric ton PVC resin, adjusted for process efficiency

    Downstream process integration

    • Chlorine fed into EDC (ethylene dichloride) reactors via controlled gas stream
    • Continuous monitoring of gas composition and temperature to minimize polychlorinated byproducts
    • Integrated into cracking towers for VCM monomer generation

    Final product types

    • S suspension and emulsion PVC resins
    • Compounded PVC piping, cable insulation, rigid and flexible sheet
    • Medical-grade and food-contact PVC products

    3. Chlorinated Solvents Manufacturing

    Our chlorine supports downstream production of key solvents such as methylene chloride, chloroform, carbon tetrachloride, and trichloroethylene. Manufacturers integrate chlorine into liquid phase or vapor phase chlorination reactors with hydrocarbon substrates to synthesize monochlorinated and polychlorinated products for degreasing, fluorinated refrigerant precursors, and specialty intermediates. Purity and process control prevent unwanted side-reactions and facilitate solvent grade certification.

    Industry compliance standards

    • ISO 14001 Environmental Management
    • US EPA TSCA Inventory (Title 40 CFR)
    • REACH (EC) No 1907/2006 for substance registration and SVHC control
    • ASTM D2103 for methylene chloride purity

    Typical usage ratio

    • 1.2–2.2 metric tons chlorine per 1 metric ton methylene chloride or chloroform (depending on chlorination stage)
    • Chlorine feed rate directly controlled according to hydrocarbon feed, temperature, and target degree of chlorination

    Downstream process integration

    • Continuous or batch reactor injection of chlorine gas into liquid or vapor phase hydrocarbon flow
    • Use of UV or thermal activation to guide selective chlorination
    • Distillation and purification systems for byproduct removal and solvent upgrading

    Final product types

    • Methylene chloride (dichloromethane)
    • Chloroform, carbon tetrachloride, trichloroethylene
    • Intermediates for refrigerants and pharmaceuticals

    4. Pulp and Paper Bleaching Agents

    In the pulp and paper industry, downstream processors apply chlorine chemistry in controlled bleaching sequences to optimize fiber brightness and remove residual lignin from wood pulp. While many facilities have moved to elemental chlorine-free (ECF) processes, chlorine-based oxidizing agents (including chlorine dioxide generated on-site from supplied chlorine) still feature in global market operations where extreme brightness and precise color control are necessary under compliant emission management.

    Industry compliance standards

    • ISO 9001 and ISO 14001 for integrated pulp and paper mills
    • EN 643 for recovered paper quality
    • BAT (Best Available Techniques) Reference Document – Integrated Pollution Prevention and Control for the Pulp and Paper Industry, EU
    • U.S. EPA Cluster Rule (40 CFR Part 430)

    Typical usage ratio

    • Conventional bleaching: 15–30 kg chlorine or chlorine derivative per metric ton pulp, optimized to local color/brightness target
    • Chlorine dioxide on-site generation: 0.65–0.75 kg chlorine per 1 kg ClO₂ output

    Downstream process integration

    • Metered gas dosing to bleaching towers or chlorine dioxide generators
    • Integration with multistage pulp washing and effluent neutralization systems
    • Closed-loop monitoring for AOX (adsorbable organic halide) minimization

    Final product types

    • Bleached kraft pulp (softwood/hardwood)
    • High-brightness printing and specialty paper
    • Wet-strength and tissue grade base stock

    5. Organic Intermediates: Epichlorohydrin and Propylene Oxide

    Chlorine is essential for producing epichlorohydrin, a critical intermediate for epoxide resins and elastomers. The process typically involves the chlorination of propylene, followed by reaction steps yielding epichlorohydrin and byproduct control. Downstream resin manufacturers then use epichlorohydrin for high-performance coatings, adhesives, water treatment polymers, and elastomers that demand strict adherence to purity and residual chloride limits.

    Industry compliance standards

    • ISO 9001 for chemical process control and QMS
    • FDA CFR Title 21 for epoxide resins in contact with food
    • REACH (EC Regulation No 1907/2006)
    • IECQ QC 080000 for hazardous substance process management

    Typical usage ratio

    • Chlorine feed: 1.1–1.3 kg per 1 kg propylene, precise level depends on yield optimization and raw proplyene purity

    Downstream process integration

    • Gas injection directly into batch or continuous reactors with propylene feed
    • Multi-stage distillation and neutralization for downstream purification
    • Real-time process analytics for impurity and byproduct control

    Final product types

    • Epichlorohydrin monomer
    • Epoxy resin precursors
    • Water treatment coagulant additives
    • Rubber and specialty elastomer intermediates

    6. Agrochemical Intermediate Synthesis

    The agrochemical industry relies on chlorine in the synthesis of a range of crop protection intermediates through aromatic chlorination, alkylation, and chlorohydrin formation. Controlled chlorine dosage in these syntheses affects herbicide and fungicide purity, process throughput, and waste minimization, demanding tight supply chain coordination and batch documentation aligned with agricultural chemical regulations worldwide.

    Industry compliance standards

    • ISO 9001 for process and product QC
    • FAO/WHO Specifications for Plant Protection Products
    • REACH registration and CLP labeling for active ingredients
    • GMP for active ingredient plants (where required)

    Typical usage ratio

    • Varies by target intermediate: 0.4–1.5 kg chlorine per 1 kg active ingredient output; tuned via stoichiometry, reaction temperature, and reactant purity

    Downstream process integration

    • Direct chlorine dosing into aromatic hydrocarbon and alkene reactors (glass-lined or corrosion-resistant)
    • Byproduct quenching and spent gas neutralization systems
    • Multi-phase extractions and crystallization for isolation and formulation of end intermediates

    Final product types

    • Chlorinated phenols and anilines
    • Pesticide and herbicide actives (e.g., 2,4-D, atrazine intermediates)
    • Fungicide and insecticide precursors
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    Certification & Compliance
    More Introduction

    Chlorine: A Manufacturer’s Perspective on a Key Industrial Chemical

    Real Manufacturing Experience with Chlorine

    Working with chlorine every day shapes the way we look at the chemical industry. Unlike the people who move it between warehouses or write about it from afar, we handle the raw materials, engineer the equipment, and face the challenges of real-life production. Our plant doesn’t just produce chlorine—it anchors a complex web of supply relationships. Everything from plastics to water treatment, textile processing to pharmaceuticals, links back to this single, reactive gas. Because of our hands-on approach, we keep a sharp eye on how production affects both quality and sustainability.

    Chlorine Gas: Characteristics and Quality

    Chlorine in our facilities typically comes in compressed gas form with a purity of around 99.5% or higher, depending on end-use. We produce it in large cylinders or containerized tanks designed to minimize loss and ensure worker safety. Chlorine at this quality level serves as the mainstay for industries that demand secure, predictable results—especially municipal water treatment and PVC polymerization. Our operational teams focus on keeping impurity levels low, since contaminants like oxygen, hydrocarbons, or moisture can complicate downstream processes.

    After years refining our production process, we’ve learned the value of precise control over variables. Operating electrolysis cells and scrubbers, tuning feed brine, and managing temperature swings helps us deliver chlorine with minimal variance, both in pressure and purity. With each batch, our in-house lab runs GC and titration, not just for regulatory compliance but also because our downstream customers depend on clean, well-characterized inputs.

    Comparative Look: How Chlorine Stands Out from Other Products

    Chlorine stays in demand year after year, but its volatility sets it apart from other commodity chemicals like sodium hydroxide or hydrogen peroxide. Some users ask why not just pick another disinfectant or oxidant? No other halogen pairs powerful oxidizing strength with such controllable reactivity—this is what keeps chlorine central to pool sanitation, bleaching, and PCB manufacturing.

    Unlike bulk caustic soda which lends itself to easy handling and less stringent containment, chlorine demands rigorous containment. Every plant worker knows the drill: routine checks for valve leaks, continuous monitoring of scrubbers, and airtight seals on hoses. Safety incidents with chlorine rarely play out on a small scale; this chemical teaches respect with its yellow-green plume and acidic bite. Any alternative, whether bromine or ozone, brings its own baggage—bromine smells worse, ozone breaks down before it can be bottled, and neither clean pipes nor disinfects water as efficiently at municipal volumes.

    We keep both dry and liquefied chlorine available. Dry, compressed chlorine gas moves directly to industrial customers through pressurized cylinders. Liquefied versions head to large-scale water disinfection or polymer production. Handling requirements for both differ; for dry gas, corrosion on equipment shows up faster, while liquids demand refrigeration and double seals. Even though some industries prefer sodium hypochlorite or calcium hypochlorite for convenience, nothing matches the efficiency of direct chlorine injection for big systems.

    Chlorine in Water Treatment

    In public water supply, we see how chlorine moves from tank to tap. Our product leaves the plant destined for municipal facilities, where dosing units meter in precise amounts to neutralize pathogens. Most waterworks managers look for less byproduct formation and predictable kill rates, which ties back to how we maintain purity and monitor production cycles. Once, a small change in our cell voltage pushed trace chlorates beyond specification; corrective action on the line fixed the issue before it cascaded into customer complaints. This hands-on vigilance separates manufacturer quality from the generic volume you might get from a broker overseas.

    No system runs indefinitely without maintenance, and chlorine dosing leads to scale or corrosion. Because we also sell components and replacements for storage and injection systems, feedback cycles between production and application stay tight. Being both a source and a technical partner helps us tailor new runs for upgraded waterworks or tighter discharge rules. Sometimes, cities tighten their byproduct discharge standards, and we’re right there, adjusting specifications or helping retrofit pumps and lines. Practical knowledge from the plant floor shortens the time from issue to solution.

    Chlorine for Polymers and Chemical Synthesis

    Moving into plastics, chlorine provides the feedstock for PVC—one of the most widely produced synthetic polymers worldwide. Our outgoing chlorine streams play a key role in the addition of chlorine atoms to ethylene, making vinyl chloride monomer. Closely monitoring flow rates and pressure enables us to match each customer’s reactor scale, reducing batch filtration downtime and improving yield. Unlike smaller distributors, we see raw fluctuations in chlorine demand each time a downstream customer spins up a new line or shuts one down for maintenance.

    Within our own site, we frequently coordinate between the chlorine cellhouse and the VCM production wing. Yearly maintenance or switchover periods bring up cross-departmental challenges: shared vacuum lines, compressed-gas feed stocks, and shared cooling capacity. The difference between a clean, on-spec batch and a line hiccup often comes down to small operational adjustments—sometimes as basic as switching a grade of feedstock or tightening flanges by a single millimeter.

    Safe Handling and Environmental Impact

    Our crew spends a lot of time thinking about containment, ventilation, and spill response. There’s plenty of discussion in the press about chlorine safety, and it’s well-deserved. Leaks and accidental releases make headlines, sometimes highlighting storage or transport accidents elsewhere. We take no shortcuts here: alarms stay calibrated, personal protective equipment sits at every entry point, and regular drills keep staff prepared. In decades of operation, the biggest lessons always come from near-misses and thorough root-cause analysis.

    Environmental responsibility remains a constant topic in our planning meetings. Older chlorine plants relied on mercury-cell or diaphragm processes, both of which raise environmental questions. Years ago, we upgraded to membrane cells. This shift moved our entire output away from mercury, which brought our operations in line with stricter regional standards on wastewater and stack gas release. We collect and neutralize off-gas and have reworked our brine recycling. For customers transitioning from legacy chlorine to newer systems, we provide technical visits and guidance based on firsthand changeover experience.

    Every year, the regulatory bar climbs a little higher. Whether it’s regional air quality caps or bans on mercury effluent, we field audit requests, compliance forms, and customer questionnaires. These desk-bound processes only work because the operating floor supports them: on-site sensors, lab technicians sampling every lot, daily logs from control room staff. Auditors can see our clean records and spot checks, but plant floor discipline keeps those records clean in the first place.

    Why Direct-Sourced Chlorine Matters

    A lot of chlorine on the market passes through multiple hands—shippers, tank farms, even re-packers—before reaching its destination. By keeping our manufacturing and logistics bound together, we keep tighter control over batch tracking, storage integrity, and end-user technical support. We can provide historic data and analyze root causes when customers raise concerns not just because we want to help, but because both our brands and licenses ride on product quality and performance.

    Some buyers want to know why buying directly from a manufacturer makes such a difference. Storage duration, tank composition, and transit time all shift product purity and reactivity. Chlorine starts to react with valve lubricants, metal welds, and residual moisture as soon as it leaves our plant. If intermediaries transfer chlorine from one container to another, risk of contamination climbs, and so does the chance for off-spec reports. Many downstream industries—especially those regulated by pharmaceuticals or municipal codes—find these trace differences credited back to production techniques or storage anomalies, not the innate quality of chlorine itself.

    Product Versatility: Industrial Chlorine in Practice

    Chlorine tags along everywhere: bleaching pulp and textiles, forming solvents, neutralizing hazardous waste, synthesizing agricultural chemicals. In pulp and paper, we provide stable supply contracts for seasonal demand swings. Food manufacturers choose our gas for rapid, controlled sanitation protocols—certain pineapple canneries can’t use hypochlorite because of trace impurities, so they rely on our high-purity gaseous chlorine dosed through precision injectors. Interfacing with each of these sectors needs flexibility on lead times, gas concentrations, and order volumes. There’s rarely a “standard” run; each order tailors batch size and storage type to user requirements, even when the underlying chemistry never changes.

    On special request, some customers take blends or lower-purity grades. Paint manufacturers or dye plants favor this approach since a few parts per million of inert gas contaminants won’t harm their process. Here, we load smaller tonnage into portable tanks, extend routine chemical stability checks, and keep direct lines open to customer quality control teams. Feedback from technical users tells us whether a process needs ultra-clean or just “solidly pure” chlorine, and we adjust cell cycle times and filtration steps accordingly.

    Chlorine and Regulatory Compliance

    Chlorine stands at the intersection of heavy regulation and industrial necessity. Compliance requirements help ensure safe and consistent quality but also pile up on operating expenses and documentation. We work with local and international agencies, sharing emission reports and facilitating site audits. Many regulators now require digital recordkeeping—control logs, maintenance books, gas detector readouts logged each shift. Each regulation adopted by the industry adds another hurdle, but on the ground, it clarifies some essential steps. For instance, ISO certifications now require extensive documentation on leak-prevention systems. This auditing loop keeps us vigilant, suggesting tweaks before an external inspector ever arrives on site.

    Serving global clients means we also follow differing local safety rules for cylinder labels, export documents, and hazardous materials handling. Our shipping department coordinates closely with operations. If an order ships to a port under MARPOL Annex III rules, cylinders and tanks get assigned their own unique seals and batch records, right down to the valve threading. No step gets automated away without first considering the regulatory consequences—both for us and for the downstream user liable for keeping water safe, plastics sturdy, or food decontaminated.

    Lessons Learned: Practical Takeaways in Chlorine Production

    Decades of manufacturing have shown us that scaling chemical output never comes down to bigger tanks and faster lines alone. Fine-tuning each process—electrolyzer current, brine composition, filtration steps—turns average plants into reliable suppliers. Defining reliable doesn’t stop at meeting paperwork requirements. It means every delivery works the same as the last, even if intake water turned acidic or a compressor lost capacity for a few hours. Experienced staff, stable operating shifts, and in-house technical support keep that rhythm. Where some competitors look at chlorine as a line item, we see a living process sustained by watchful eyes and restless operators quick to spot change.

    So much of the challenge lands in training and morale. Our new hires get hands-on guidance tackling everything—the routine checks on vacuum pipelines, the monthly recalibration of inline meters, the detailed purging sequences for swapping tanks. Every day brings its own set of small-scale decisions that influence uptime, quality, and throughput. It’s tough to appreciate from an outside perspective. The unglamorous, daily rhythm of plant life nurtures a kind of practical wisdom you won’t find in classroom manuals or PowerPoint slides. This knowledge translates into answers for customers, fast troubleshooting during commissioning, and honest talk about the real-life limitations and performance of chlorine products.

    Looking Ahead: Innovation In Chlorine Processes

    The market keeps shifting, with end-users searching out greener production cycles and alternatives that reduce byproduct load. Innovation in chlorine isn’t just about high-purity grades; it's about smarter containment and leaner energy use. Recently, our investment has focused on automating cell voltage adjustments, retrofitting centrifugal compressors, and applying advanced membrane technologies. Our engineers chase lower energy intensity models, hoping to shave off both cost and emissions per metric ton produced. Each uptick in efficiency, each ton of energy saved, loops back as a benefit—lower bills for customers, fewer emissions, and higher throughput for the same floor space.

    Many discussions about chemical sustainability gloss over trade-offs that only become clear through direct production. Reusing waste brine, reducing fugitive emissions, or increasing membrane lifespan all sound positive, but integrating these changes on an active production floor risks unexpected downtime. Our team pilots new approaches on small skids, running parallel processes until the data lines up. Once satisfied, they roll changes into mainline systems, always ready to reverse course if key indicators flicker out of spec. That conservatism grows out of real experience, not just financial pressure or regulatory demand.

    End-User Feedback and Ongoing Improvement

    Our technical teams don’t just leave the plant and disappear; they keep open lines with customers, troubleshoot system integration hiccups, and collect data on performance months after delivery. Running surveys or conducting site visits gives us operational feedback that cycles back into process improvement. If a dosing pump clogs up repeatedly, sometimes it’s a user error; other times it tailors our product spec or leads us to recommend a change in injection timing. We invest time in cradle-to-grave tracking, so field complaints get matched back to individual batches and, if needed, the shift that produced them.

    The big picture for long-term business boils down to consistency and learning. Every shipping delay, leaky valve, or off-color batch signals opportunities to hone upstream logistics, improve maintenance, or swap suppliers on otherwise minor consumables. Relationships built on honest reporting, reliable product, and responsive support stand a lot longer than any single contract or price discount. The real advantages in manufacturing only reveal themselves when transparent process and user understanding outpace short-term salesmanship.

    Chlorine: Reliable, Versatile, and Never ‘Just Another Commodity’

    Manufacturers don’t get the luxury of distance. Each bottle, tank, or gas cylinder bearing our label represents weeks of work, oversight, and plenty of learning. We’ve seen plenty of substitutes for chlorine suggested over the years, but every alternative forces new compromises—lower sanitation, weaker plastic, higher disposal costs, or harder logistics. Chlorine’s unique effects rest on more than theoretical strength: they grow out of industrial experience, hands-on problem-solving, and learning from every challenge as it comes. Making safe, reliable, and adaptable chlorine keeps our team invested in real-world results, not just paperwork statistics or abstract goals. Every batch stands as practical proof of what makes chlorine—and its manufacturing—a backbone of industry.