Why Phosphoric Acid 75% USP Food Grade
Phosphoric Acid 75% USP Food Grade (CAS 7664-38-2) provides mandatory regulatory compliance for commercial manufacturers requiring controlled acidulation and precise pH adjustment in consumable products. Formulated as H3PO4, this 75% concentration delivers a highly effective balance of active acid strength and handling efficiency for large-scale production runs. It is a non-flammable, clear to pale yellow liquid that presents as a translucent viscous solution in its undiluted state. Because it is completely miscible with water and demonstrates excellent polar solvent compatibility, process engineers can integrate it directly into existing aqueous batches without complex mechanical agitation. By strictly meeting USP parameters, this acid guarantees that trace heavy metals and impurities remain securely below the exacting safety thresholds mandated for the commercial food, beverage, and dairy industries.
Best Applications for This Grade
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Beverage Acidulation: Commonly applied in commercial cola and carbonated soft drink manufacturing to impart a distinctive tart flavor profile while establishing a stable, low-pH matrix that resists microbial degradation.
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Dairy Processing Control: Functions as a targeted acidic agent to adjust specific pH levels during industrial cheese production, optimizing rapid curd formation and stabilizing complex protein structures within fluid milk systems.
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Food Preservation and Canning: Commonly applied in processed food manufacturing to precisely control batch alkalinity, regulating the overall acidity matrix to maintain exact flavor profiles and secure long-term shelf stability.
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Agricultural Nutrient Formulation: Serves as a primary phosphorus source and aggressive pH reducer commonly applied in specialized liquid fertilizer blends, keeping vital nutrients soluble for modern precision fertigation equipment.
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Brewery Water Treatment: Lowers the residual alkalinity of incoming source water to hit exact enzymatic pH targets during the grain mashing process, directly influencing yeast health and maximizing total mash extract efficiency.
When to Choose a Different Grade
- If facility operations require certified analytical purity for rigorous laboratory testing, trace metal analysis, or exacting chemical synthesis rather than consumable food production, select Phosphoric Acid 75 ACS Grade.
- If analytical researchers or laboratory technicians need an elevated acid concentration to minimize water volume within strict ACS-certified testing environments, choose Phosphoric Acid 85% ACS Grade.
- If agricultural or municipal operators require a pre-formulated buffering agent to maintain stable environmental pH parameters rather than manually diluting raw concentrated acids, consider pH-Ree Fall - World Class Buffering Solution For PH Stability Made From Phosphoric Acid.
| Molecular Weight |
97.99 |
| Formula |
H3PO4 |
| Assay |
74-76% |
| Grade |
Food Grade |
| Flash Point |
Non-flammable |
| Form |
Liquid |
| Solubility |
Soluble in water |
| Appearance |
Clear, colorless liquid |
| Melting Point |
42 |
| Boiling Point |
158 |
| Specific Gravity |
1.685 |
| Industry |
Food Processing, Beverage Industry, Agriculture, Industrial Cleaning, Pharmaceutical |