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HS Code |
947589 |
| Chemical Name | Phosphoric Acid |
| Cas Number | 7664-38-2 |
| Molecular Formula | H3PO4 |
| Molecular Weight | 98.00 g/mol |
| Appearance | Clear, colorless, odorless liquid |
| Purity | Typically 75-85% (food grade) |
| Ph | Less than 1.0 (1% solution) |
| Solubility | Completely miscible in water |
| Melting Point | 21°C (70°F) |
| Boiling Point | 158°C (316°F, decomposes) |
| Density | Approx. 1.70 g/cm³ at 25°C |
| E Number | E338 |
| Taste | Strongly acidic, tangy |
| Stability | Stable under normal storage conditions |
| Odor | Odorless |
As an accredited Food Grade Phosphoric Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
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Purity 85%: Food Grade Phosphoric Acid with purity 85% is used in beverage acidulation, where it ensures consistent tartness and pH stability. Viscosity Grade Low: Food Grade Phosphoric Acid of low viscosity grade is used in syrup manufacturing, where it allows rapid and uniform mixing. Molecular Weight 98 g/mol: Food Grade Phosphoric Acid with molecular weight 98 g/mol is used in cheese processing, where it improves protein coagulation. Iron Content <5 ppm: Food Grade Phosphoric Acid containing iron content less than 5 ppm is used in bottling soft drinks, where it prevents undesirable discoloration. Melting Point 42°C: Food Grade Phosphoric Acid with a melting point of 42°C is used in candy production, where it contributes to precise crystallization control. Stability Temperature Up to 300°C: Food Grade Phosphoric Acid stable up to 300°C is used in baked goods formulations, where it maintains acid strength during high-temperature processing. Chloride Content <10 ppm: Food Grade Phosphoric Acid with chloride content below 10 ppm is used in dairy product stabilization, where it minimizes risk of off-flavors. Heavy Metal Content <1 ppm: Food Grade Phosphoric Acid with heavy metal content less than 1 ppm is used in food preservatives, where it ensures food safety compliance. Water Solubility 100%: Food Grade Phosphoric Acid with 100% water solubility is used in flavoring agents, where it guarantees homogeneous dispersion. |
| Packing | Food Grade Phosphoric Acid is packaged in a 35 kg blue HDPE drum with secure tamper-evident seal and clear labeling. |
| Container Loading (20′ FCL) | 20′ FCL container loads food grade phosphoric acid in 35 kg high-density polyethylene drums, securely palletized for safe, efficient international transport. |
| Shipping | Food Grade Phosphoric Acid is shipped in corrosion-resistant containers, such as HDPE drums or IBC totes, clearly labeled for food use. It is transported under secure, dry conditions, away from incompatible substances. All handling complies with food safety regulations, ensuring product integrity during transit and storage. Proper documentation accompanies every shipment. |
| Storage | Food Grade Phosphoric Acid should be stored in cool, dry, well-ventilated areas away from direct sunlight and incompatible substances such as strong alkalis and oxidizers. Use corrosion-resistant containers, preferably made of plastic or lined steel. Ensure containers are tightly sealed to prevent moisture absorption. Proper labeling and secondary containment are recommended to avoid leaks or accidental contact. |
| Shelf Life | Food grade phosphoric acid typically has a shelf life of 2 years when stored in a cool, dry, and tightly sealed container. |
Competitive Food Grade Phosphoric Acid prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8615365186327 or mail to sales3@ascent-chem.com.
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Tel: +8615365186327
Email: sales3@ascent-chem.com
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Every day in our manufacturing facility, the focus stays on the details that make a difference for food processors, beverage bottlers, and ingredient suppliers. Among the many acids used in the food industry, phosphoric acid holds a unique spot. Its contribution to pH control, preservation, and flavor enhancement has been proven by decades of industry experience. We’ve spent years perfecting the process to deliver food grade phosphoric acid that producers can trust, batch after batch.
Our production of food grade phosphoric acid relies on wet process technology, using purified raw materials and multi-step filtration to remove impurities before concentration. We never use unrefined feedstock, as contaminants like arsenic, lead, or organic residues complicate downstream application. Food processors need more than a generic specification on a label. They count on a manufacturer who understands that one missed detail—like a slightly raised heavy metal level or a trace pesticide residue—can result in rejected product, costly recalls, or loss of public confidence. Each lot goes through rigorous in-house and third-party analysis for compliance with FCC and EINECS standards, so the acid you receive meets tight industry and regulatory targets on purity and safety.
Food processing has no room for guesswork. The model we most commonly supply runs between 75% and 85% assay, clear and colorless, with minimal cloudiness even in large storage tanks after longer holding times. Let’s say you run a blending plant making beverages for an international brand. A cloudy acid can mean metal contamination or leftover organic degradation. If you’re operating in a confectionery environment, excess iron will trigger brown discoloration and off-flavors in syrups and jellies. Our food grade phosphoric acid carries iron levels typically below 10ppm, strict chlorides control, and residual nitrate that can be measured only by sensitive laboratory equipment—not the human eye.
But specifications don’t exist in a vacuum. Each production run tackles realities like raw material variation, atmospheric humidity during handling, or the risk of environmental cross-contamination at the unloading bay. Real-world manufacturing means running QA on every shipment, not assuming yesterday’s analysis will hold true tomorrow. Because production never truly pauses, our shift teams maintain logbooks for every tank and batch, tracing each drum’s contents right back to the source phosphate and the moment it was blended with process water. For customers, that level of traceability safeguards both food safety audits and brand reputation.
Not all phosphoric acid springs from the same process or quality control environment. Technical or industrial grades often show up at much lower price points because they’re made directly from wet-process phosphates or recycled byproducts, with no final purification steps. That might work in a fertilizer facility or metal surface treatment plant, but food and beverage companies face a tighter regulatory window. Even trace contaminants from anti-caking agents or fertilizer-grade feedstock will turn up after bottling—and inspectors notice.
Over time, we’ve helped customers who made the switch from industrial grades after running into issues ranging from off-tastes to sporadic precipitation in their tanks. One customer, a bulk soft drink concentrate manufacturer, switched after a single out-of-spec batch forced months of supply chain clean-up and market re-assurance. The takeaway is clear: Food grade phosphoric acid doesn’t just check purity boxes on a tech sheet; it solves real-world QC and branding challenges.
On the customer side, food grade phosphoric acid is an ingredient few consumers recognize, but industry experts see its fingerprints everywhere: sharp tartness in colas, clear viscosity in jams, extended shelf-life in preserved fruits and cheeses. We never lose sight of the fact that acidulants heavily influence how flavors carry through a product, from the subtle sourness in citrus sodas to the refreshing neutral finish in ready-to-drink teas.
In our experience, the acid’s low metal and organic residue content directly improves clarity and flavor consistency. Soft drink lines filling millions of bottles per day rely on an acid that won’t form deposits in blending tanks or throw haze over time. Confectioners and cheese processors trust its exacting quality to avoid off-notes or unwanted microbial growth. Even a slight overage of potassium in acid throws off flavor balance and prolongs batch setup time for high-sugar applications. Our production focuses relentlessly on keeping those interfering ions at minimum levels.
The reasons for food-grade-only usage run deeper than routine compliance. Food grade phosphoric acid needs to meet not just one regulation but a patchwork of national and international food laws—FCC in the US, Regulation (EC) No 231/2012 in the EU, and various Codex Alimentarius requirements worldwide. Each of these standards covers purity, assay, and impurity thresholds down to fractions of a part per million for heavy metals or organics. Our lab staff train on every protocol, from classic wet chemistry to modern atomic absorption spectrometry, specifically because real compliance means hands-on sampling, not paperwork.
To support continuous improvement, our in-house team logs every deviation and near-miss in the production record. Chasing incremental reductions in nitrate and fluoride, for example, led us to update filtration media and adjust the crystalline phosphate sourcing. These process improvements didn’t just show up as cleaner certificates—they translated to lower rejection rates and better customer satisfaction scores.
We know not every food processor runs the same equipment or formulations. A dairy customer, for instance, once struggled with scaling in their evaporation pans after switching to a lower-purity acid. Our technical staff pulled historical batch data and coordinated with their QA team to isolate trace magnesium impurities as the culprit. The solution wasn’t simply to replace with a generic food-grade acid, but to tailor our production run, further refining filtration at bottling and re-testing until magnesium and sodium levels both fell far below regulatory cutoffs. That customization matters far more than a standard “meets all specs” approach.
Another side of the business focuses on providing acid in containers matched to real handling needs. Tanker truck deliveries for beverage mega-producers require not only volume but robust packaging compatible with on-site safety and unloading systems. Smaller downstream customers in the flavor industry may need smaller drums or totes, with traceability for every lot and rapid turn-around on COAs. We keep these realities in mind, fitting our product forms to genuine process conditions, so every operator receives acid ready for their environment.
Comparisons with lower-purity acid highlight decisions made upstream in the process. Food grade production uses extra decolorization and filtration steps, yielding a bright, water-clear acid with low organic residue. Industrial versions often run brownish or cloudy in the drum, holding onto both mineral residue and organics. For food processors, these are never cosmetic issues—they affect how ingredients dissolve in finished batches and what the customer tastes at the end of the supply line.
Food grade batches also come with comprehensive documentation. Every load leaving our warehouse includes a full analysis: heavy metals, organics, and each critical mineral ion. Industrial acids, by comparison, might deliver only an assay value and a generic “low metals” assurance, with no batch traceability or origin confirmed.
From a plant operations angle, contaminant control saves on unexpected downtime and waste cleanup. It’s easy to overlook the cost of a tank cleanout caused by a misdelivered load of technical acid, until dozens of man-hours and lost production time pile up. Our customers see food grade acid as a preventive measure: one that keeps the line moving and avoids risk right up to final packaging.
Every year, food ingredient regulations evolve, introducing new challenges for acidulant manufacturers. Limits on heavy metals keep tightening. Organic residue testing—including for persistent contaminants like glyphosate—moves from optional to required in more countries. In response, we’ve put real capital behind laboratory upgrades, automated filtration equipment, and personnel training.
Real investment includes both technology and people. We continually retrain production staff in new sampling and analysis techniques as requirements shift. Live feedback from our customer support team often becomes the starting point for another QC protocol update—especially after seeing how regulatory agencies in export markets interpret “food grade” in their inspections.
Some customers ask about our resource recovery or water recycling methods. Over the past five years, we introduced closed-loop water management, both to protect product purity and support the site’s environmental footprint. While purity remains the top goal, resource conservation has become both an ethical obligation and a regulatory expectation in the food supply chain. We keep upgrading our systems to match.
Misconceptions persist about all phosphoric acids being more or less interchangeable, and cost-sensitive companies sometimes flirt with “borderline” grades in the hope of a price break. Our long history shows that any immediate savings from a lower-cost, non-food-grade acid get wiped out by long-term costs: batch rejections, reputational risk, product recalls, and sometimes legal or import challenges.
A frequent problem for new users is mistaking clarity for purity, or checking only the main assay number and missing critical impurity levels. Some vendors boast high phosphate content but neglect to disclose residual solvents or trace heavy metals left over from rapid (and less expensive) production runs. Our responsibility is to walk the customer through analysis results and clarify exactly how those trace substances can affect your finished product.
Food regulators keep a close watch, and so do multinational food brands with laboratory resources of their own. It’s not unusual for finished beverage products to face multi-stage analysis both in-country and at import/export gateways, triggering expensive investigations if non-compliant phosphate is found on review. We regularly help customers interpret laboratory reports and regulatory updates, so nobody is caught off-guard by shifting standards.
Over the years, the food industry’s relationship with critical ingredients like phosphoric acid has grown from transactional to partnership-focused. Plant managers, QA directors, and purchasing agents expect transparency, rapid response, and technical input when issues come up. Our company’s long-term investment in traceable, documentable production results reflects those customer priorities.
Bulk buyers in the beverage sector often run multi-year contracts based on reliable supply, not spot-market price drops. Focusing on food grade allows processors to protect long-term brand reputation, secure regulatory approvals, and deliver the predictable product profiles that supermarkets and consumers expect.
Switching suppliers or grades to chase costs risks more than production: It risks an entire network of certifications, customer contracts, and distribution agreements. Our job is to keep that network stable by guaranteeing the integrity of every acid shipment, down to the lot number and QA log.
Local water chemistry, available phosphate mines, and shipping conditions can all impact the end characteristics of food grade phosphoric acid. In regions where natural fluoride or heavy metal content is higher in the base mineral, our facility runs extra filtration cycles and rigorous batch separation. In humid climates, packaging is designed to resist moisture intrusion and color shift.
Shipping food grade chemicals across continents raises its own issues: maintaining chain-of-custody integrity, ensuring temperature control when necessary, and staying ahead of regulatory documentation for import clearance. These are hands-on details learned from real experience—not abstract promises in an online specification sheet.
On the front-end, sourcing reliable, low-contaminant phosphate ore remains an ongoing challenge as global demand fluctuates. Our contracts build long-term relationships with responsible suppliers, reducing the chance of surprise contamination events due to spot-market substitutions.
End-user feedback shapes our product improvements. If a batch ever triggers an issue—unexpected haze, inconsistent flavors, or lab test concerns—we dig into the supply chain, examine all process records, and update our internal protocols. This direct engagement tightens our production quality and keeps us tuned to how acidulant performance works in a wide range of real-world environments.
Sometimes customers have technical questions about blending, storage stability, or compatibility with processing aids. Our technical support team draws on both laboratory data and practical operating history. Whether it’s solving seasonal haze in fruit spreads or reducing cleaning downtime in a beverage tank farm, we look beyond the specification to give solutions based on what actually works on the factory floor.
Food grade phosphoric acid won’t disappear from the ingredient list any time soon, but consumer concerns and new food science discoveries will keep shifting its use patterns. Growing demand for certified non-GMO, allergen-free, and clean label options means even trace residues from equipment or packaging materials come under greater scrutiny. Improvements in plant design, laboratory analysis, and supply chain traceability form the backbone of our ongoing investment plan.
We keep close ties with regulatory bodies, trade groups, and customers to stay ahead of upcoming changes. Whether the future brings tighter trace residue limits, greater pressure for sustainable and circular sourcing, or new food safety documentation, our approach stays the same: deliver acidulant quality that supports both food safety and production efficiency.
Here in our manufacturing facility, the real work goes far deeper than filling drums. Every kilogram of food grade phosphoric acid represents not just raw phosphate or gallons of process water, but hundreds of hours verifying, testing, and adjusting each step in the process. The outcome is an acid tailored for the realities of modern food and beverage production—a product with traceable purity, compliance, and the support of a technical team who understands how minor deviations can ripple throughout the food supply chain.
For today’s ingredient buyers, food safety leaders, and R&D specialists, the difference between food grade and standard phosphoric acid lies in the details—details shaped by years of delivered performance, customer feedback, and constant engagement with the demands of regulated, branded food manufacturing.
We stake our reputation on supplying food grade phosphoric acid that processors can trust, day in and day out. Our experience, plant investment, and hands-on technical knowledge are your assurance that each shipment is ready to meet the exacting requirements of global food safety and quality, now and in the future.