Product Introduction
Food Additive Sulfuric Acid (H₂SO₄, food grade, ≥98%) is a high-purity strong acid that is completely soluble in water. It has strong dehydrating and catalytic activity and is used in pH adjustment, acid hydrolysis, and refining processes in food processing.
Application
Starch sugar and glucose syrup production (acid hydrolysis catalysis)
Food-grade phosphate production
Food additive intermediate manufacturing
Refining of fermentation products such as gelatin and amino acids
Acid washing and descaling of food processing equipment (meeting food-grade requirements)
Product Parameters
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Index requirements for food additive sulfuric acid |
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Index |
92 acid |
98 acid |
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Content (H2SO4), ω/% |
≥92.5 |
≥98.0 |
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(NO3), ω/% |
≤0.001 |
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Reducing substances |
Through testing |
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Chloride (as Cl), ω/% |
≤0.005 |
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|
(Fe), ω/% |
≤0.020 |
|
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(Se)/ (mg/kg) |
≤20 |
|
|
(Pb)/ (mg/kg) |
≤5 |
|
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(As)/ (mg/kg) |
≤3 |
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|
Color |
White or light brown |
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State |
Clear, oily liquid |
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Related Processes
Acid Hydrolysis Process: Used for starch or polysaccharide cleavage to improve conversion efficiency.
Precise pH Control Process: Online metering and dosing system enables automatic acidity adjustment.
Refining and Clarification Process: Adjusts the pH of the system to optimize filtration and separation efficiency.
CIP Cleaning Process: Used for acid washing and descaling of pipelines in food-grade equipment.
pH Range
Strong Acid Adjustment Capability (pH 1–4): Stable control of the system within the strong acid range even at low addition levels.
Buffer System Compatibility (pH 3–6 Adjustment): Works with food buffer salt systems for precise acidity control.
High Ionic Strength Stability: Maintains stable acidity adjustment capability even in high-sugar and high-salt environments.
Batch Stability
① Raw Material Control: High-purity sulfur or compliant raw materials are used to control heavy metal and impurity content at the source.
② Active Ingredient Testing: Each batch is tested for H₂SO₄ content, color, iron content, and heavy metal indicators to ensure compliance with food additive standards.
③ Performance Consistency Testing: Acidity titration and reaction efficiency tests are conducted to ensure consistent process performance.
④ Batch Deviation Control: A strict SPC quality control system is established to ensure concentration deviation ≤ ±0.2%.
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