Food Grade Carbon Dioxide

    • Product Name:Food Grade Carbon Dioxide
    • Chemical Name (IUPAC):Carbon dioxide
    • CAS No.:124-38-9
    • Chemical Formula:CO2
    • Form/Physical State:Compressed liquefied gas
    • Factroy Site:No.3369 Bohai 10th Road,Lingang Economic Zone,Binhai New Area,Tianjin City,China
    • Price Inquiry:sales2@liwei-chem.com
    • Manufacturer:Tianjin Soda Plant
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    Specifications

    HS Code

    588840

    Chemical FormulaCO2
    PurityTypically >99.9%
    AppearanceColorless gas
    OdorOdorless
    Molecular Weight44.01 g/mol
    Boiling Point-78.5°C (sublimes)
    Melting Point-56.6°C
    Density1.98 kg/m³ (at 0°C,1 atm)
    Solubility In Water1.45 g/L (at 25°C)
    Food Additive CodeE290
    FlammabilityNon-flammable
    ToxicityLow at food-grade concentrations
    Production MethodFermentation or industrial synthesis
    Primary UsesCarbonation of beverages,food preservation
    Storage StateCompressed gas or liquid in cylinders

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

    Packing &Storage
    PackingFood Grade Carbon Dioxide,10 kg cylinder;high-pressure steel container with safety valve,labeled for food use,tamper-evident cap.
    Container Loading (20′ FCL)20′ FCL container loads approximately 20 metric tons of food grade carbon dioxide,safely packed in high-pressure cylinders or bulk tanks.
    ShippingFood grade carbon dioxide is typically shipped in high-pressure cylinders or bulk tanks,following strict food safety regulations. Containers must be clearly labeled and comply with relevant transportation standards. During shipping,temperature and pressure are monitored to ensure product purity and safety,and all handling is performed by trained personnel.
    StorageFood Grade Carbon Dioxide should be stored in tightly closed,clearly labeled cylinders or tanks,kept upright and secured in a cool,dry,well-ventilated area away from direct sunlight,heat sources,and incompatible materials. Storage areas must be equipped with proper ventilation and gas detection. Cylinder valves should remain closed when not in use. Store away from flammable substances and strong oxidizers.
    Shelf LifeFood Grade Carbon Dioxide has an indefinite shelf life when stored in tightly sealed containers under recommended conditions,away from contaminants.
    Application of Food Grade Carbon Dioxide

    Purity 99.9%:Food Grade Carbon Dioxide with 99.9% purity is used in beverage carbonation,where it ensures consistent bubble formation and taste quality.

    Microbial Quality Certified:Food Grade Carbon Dioxide with certified low microbial content is used in modified atmosphere packaging for fresh produce,where it extends shelf life by inhibiting spoilage microorganisms.

    Stability Temperature -56°C:Food Grade Carbon Dioxide with a stability temperature of -56°C is used in flash freezing of food products,where it enables rapid and uniform freezing to preserve texture and nutrients.

    Moisture Content <0.02%:Food Grade Carbon Dioxide with moisture content below 0.02% is used in bakery product preservation,where it prevents unwanted chemical reactions and maintains product freshness.

    Gas Phase Specification:Food Grade Carbon Dioxide in high-purity gaseous phase is used in dairy processing for pH regulation,where it allows precise control for consistent product quality.

    Odorless Grade:Food Grade Carbon Dioxide with odorless grade is used in soft drink bottling,where it preserves the original flavor profile of the beverage without imparting off-odors.

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    Tel:+8615380400285

    Email:sales2@liwei-chem.com

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    Certification &Compliance
    More Introduction

    Food Grade Carbon Dioxide:The Standard We Live By

    Why Purity Demands More Than a Label

    In the world of chemical production,few things earn respect like food grade carbon dioxide. Anyone who has stepped onto the factory floor,checked storage tanks,or traced supply lines knows that the job does not end at simply compressing gas. Every batch of our food grade CO2leaves our site with more than regulatory certificates—it carries the reputation of years spent refining extraction,filtration,and multi-stage distillation systems. This gas never gets the shortcut treatment. If you have ever watched a beverage filler line in motion,jets of CO2charging into bottles,or controlled gas blankets over oil tanks,you have seen our real work in action.

    We produce food grade carbon dioxide with genuine commitment to meeting—frequently exceeding—the safety margins required by global standards like those of the International Society of Beverage Technologists and local food codices. It traces back to gas source selection. We do not draw feedstock from any stack. Instead,our sourcing relies on fermentation off-gases from trusted,traceable partners. Each stream is monitored and adjusted. Filtration,molecular sieving,and polishing remove contaminants that would otherwise spell disaster in finished foods or beverages. Ask any engineer who has seen frosting issues in ice cream,flavor changes in carbonated soft drinks,or inerting failures in edible oils how strict removal of aldehydes,sulfur,or hydrocarbons matters—they will not risk guessing,and neither do we.

    Specification Meets Practical Reality

    Our customers expect a consistent product because their customers—families sitting down with a sparkling drink,factories packing sliced cheese,or bakers setting dough—trust that every batch they receive is identical to the last.

    We supply food grade carbon dioxide in multiple container formats,from high-pressure cylinders to bulk tankers. Each vessel faces pre-fill evacuation and purge cycles,and we maintain close control over every fill sequence. One common industry model,our pressurized liquid CO2,ships at over 99.9% content,with residual moisture,acids,and hydrocarbons kept well below regulated maximums. Lower-grade gases might slip through less-dependable supply chains,raising inconsistent batch reports and rejected shipments. Ours moves directly from QC release to cold-chain logistics,bypassing unnecessary handling that could allow recontamination.

    We know that conformance on paper rarely tells the whole story. Food safety inspectors,quality auditors,even plant managers tell us the difference comes not from slogans,but from hard numbers and trackable results. Outgassing,residual contaminants,and sampling procedures shape the fate of entire production runs. We back up every delivered batch with a certificate of analysis mapped to retained samples,letting our customers test for themselves. We have seen too many instances—especially with industrial or medical CO2—where “close enough” ends up costing far more in product recalls or production downtime.

    Why Food Grade Matters:Beyond the Obvious

    For the average bystander,food grade materials may seem like another label,but on the plant floor the real value is day-to-day reliability. Carbon dioxide touches food and drink in more ways than just bubbles. In soft drinks,it carries flavor. Every microgram of impurity hangs risk over shelf life and taste. In meat packaging,CO2extends shelf stability,keeps color bright,and deters spoilage bacteria. Ice cream manufactures depend on gas purity to prevent taste shift and ice crystal formation. Even stark,flavorless gases can do real harm if they bring along trace ammonia or sulfur.

    We remember clearly an incident nearly ten years ago when a large soft drink plant in Southeast Asia rejected thousands of cases due to a persistent off-flavor. Extensive investigation traced it not to the concentrate or water,but to traces of benzene found in the carbonation gas—benzene that originated from low-tier industrial CO2. No amount of flavoring could mask it. Since then,we have leaned harder on upstream controls,investing in additional chromatographic screening and third-party audits. Food grade is not just something we stamp on a cylinder or tank;it is a promise that lives within every part of the process,and we approach it with genuine caution and pride.

    Comparing Food Grade to Other Grades

    Having manufactured several grades of carbon dioxide for years—including welding,industrial,and medical classes—we see misunderstandings crop up all the time. Industrial CO2seldom faces the same scrutiny on total volatile organic content,nor does it endure routine metal,halide,or acetaldehyde analysis. Medical CO2covers inhalation risks but may carry different spec maxima on some byproducts,because the “point of use” in respiratory medicine differs from carbonation. In some regions,food and medical grades overlap. Many times,though,medical grade lacks direct approval for ingestion or food contact,especially where incidental intake could occur from gas application to raw morsels or liquid foods.

    We have seen cases where a user unknowingly bought industrial-grade gas for food packaging—justifying it on cost—only to deal with the aftermath of short shelf life and failed microbial tests. Different grades result from varying feedstocks,purification stages,and documentation trails. Food grade CO2simply runs through more processes,more analyses,and more documented checkpoint approvals than the rest. It is often the only grade explicitly tested for a full slate of organic and inorganic impurities defined by food safety agencies.

    From our position,shortcutting standards to cut expenses amounts to risking customer relationships,regulatory violations,and public safety. No one regrets spending extra on true food grade gas when the stakes include brand loyalty,consumer health,and regulatory audits.

    Everyday Uses Shaped by Reliable Gas Supply

    On a typical day,our gas goes straight into carbonating water,sealing salads and sandwiches in protective atmospheres,extruding snack pellets,and helping dairies chill milk. Our partners in winemaking use CO2to inhibit wild fermentation and keep out unwanted oxygen. Breweries rely on it to purge tanks clean so delicate hops and malt can shine instead of oxidizing. For every application,knowing exactly what goes into the gas—every molecule,every possible side stream,every cylinder wash—is what keeps recalls,taste failings,and safety nightmares away.

    We see our customers’ reliance on proper food grade CO2during supply crunches or pipeline contamination scares. Years with increased demand or crop-driven feedstock shortages put pressure on the reservation of food-specific sources. We source from multiple lines,sometimes leveraging fermentation byproducts,biogas capture,or ammonia process off-gas—always reverting back to our strictest filtration and analytic regimens. Throughout the chain,just-in-time logistics coupled with regular tanker and cylinder maintenance enables reliable,food-safe supply.

    Pushing Quality Further:What Experience Teaches

    Decades in this industry have shown us that systems,documentation,and audits matter,but so do the boots on the ground. Operators who know they are filling a food batch work differently than those bagging CO2for industrial use. Our fill bays divide food grade lines,color-coded and physically separated,from the rest. Sampling ports,contamination alarms,and dry ice traps stop minor issues early. We deploy double-checks before batch release,log results in traceable QC records,and perform regular third-party spot checks to confirm our internal protocols. This diligence does not start or stop with audits;it penetrates daily routines.

    One key lesson involved a partner bakery whose finished product developed odd coloring. After a thorough investigation,the only culprit:trace NOxin the supplied CO2,far below even industrial maximums—yet enough to interact with certain flours. Our solution involved retrofitting the production line with additional catalytic purification just for this specific application. Our relationship grew stronger from that shared learning. Rather than sell a gas and walk away,we work shoulder to shoulder with process engineers,QC,and technical leads at each site,troubleshooting and adapting supply as needed. Not every supplier does this,and feedback from our partners proves how crucial it becomes.

    Regulatory Expectations Versus Everyday Best Practices

    Regulation sets the floor—real safety and value come from building far above it. Most food grade CO2faces requirements mirrored in national food codes:heavy metal maximums,known S2and C2fractions,and physical property checks. We treat these as the beginning. Our internal specs push limits lower,often running tighter than published maxima to guarantee sensors never miss tiny out-of-spec drifts. By comparison,cylinders meant for welding or laser cutting routinely pass at much looser standards. Despite this,we often meet customers who have sourced gases for food use from unauthorized vendors because price appealed more than confidence.

    Years spent in on-site audits,troubleshooting,and contamination incident recalls have taught that a robust,transparent documentation trail wins trust every time. Whether an importer,bottler,or contract manufacturer asks,we can show the exact origin—and processing steps—of any given cylinder or tanker of our gas. Periodic investments in new chromatographs and moisture analyzers have spared us from large-scale feedstock recalls at least twice. We keep batch samples and retention policies that run much longer than required,just so we can answer any question about supply chain integrity.

    Solving Challenges That Come With Scale

    As the requirements for product traceability and safety advance,we continually refine how we track,test,and seal every delivery. Food safety is unforgiving. A single out-of-place molecule in the chain can shut down entire lines,spoil days of production,and spread across continents via modern distribution. Globalization and the rise of direct-to-consumer meal solutions raise the bar for every bulk and micro-bulk delivery. Multi-country recalls in the last decade—from juices to baby food—often had root causes in something as seemingly minor as carbon dioxide headspace contamination. In our facility,these stories have driven greater redundancy,more technical cross-training among staff,and greater investment in new on-line monitoring tools.

    We listen to stories from our large and small customers alike. Soft drink bottlers face flavor drift and inconsistent fizziness when supply weakens,and small bakers fight to convince regulators that their modified atmosphere packaging gas meets required food specs. For all,uninterrupted quality directly means less product wastage,fewer recalls,and happier end users opening safe,appealing foods. We see real-world wins in returned business and positive third-party audits—not just compliance paperwork.

    Scalability also brings logistics challenges. Summer spikes in beverage demand often coincide with CO2shortages resulting from agricultural or ethanol sector slowdowns. We plan months ahead with our clients,distribute storage across several regional hubs,and always keep open channels with both major and minor feedstock providers. Our investment in cold-insulated mobile tankers and redundancy on vaporization units stems from seeing the high price of a single missed delivery.

    Future Trends:Toward Smarter,Safer Processes

    Looking ahead,innovation shapes how we will safeguard and distribute food grade carbon dioxide. Automation and on-line purity monitoring decrease risk of human error and let us catch deviations before they reach customers. Sustainability in sourcing has emerged as a top concern—partners in the beverage and food industry want renewable,verified low-carbon sources of their process gases. We have joined with fermentation plants and alternative energy providers to capture and convert biogenic CO2,providing a continuous,food-safe stream that meets strict hydrocarbon and biological contaminant checks. This not only serves compliance but answers growing consumer demand for responsibly sourced ingredients.

    Blockchain traceability and digital certificates now supplement our batch records,giving buyers instant access to every step from source to delivery. Audit teams walk our site knowing they can follow every molecule’s journey,right down to batch chromatograms. We believe that food grade CO2will continue evolving beyond minimum specs toward a market where every gas user—no matter how small—deserves complete transparency and total safety confidence.

    The Human Element Lies at the Core

    No automated system fully replaces experience—nor does regulatory language capture the full story. Years standing beside the same blending tank operators,logistic drivers,and QC leads forge a sense of shared responsibility that shapes our decisions. At every step,we ask ourselves not just “does this meet a standard?” but “would I use this,would I serve this to my family?” That question drives everything about our food grade CO2program.

    We know our gas meets far more than the minimum,and many of our staff gladly serve food and drink made with our carbon dioxide at their own tables. That trust—earned,never assumed—shapes our process,our investments,and our relationships with customers. The difference between true food grade and everything else is clear when you live with the results every day,from the production line to the dinner table.