Product Name: Food Grade Sulfuric Acid
Chemical Formula: H₂SO₄
Molecular Weight: 98.07
Physical Properties:
Food grade sulfuric acid is a colorless, oily liquid in its pure form. Industrial grade products may appear slightly yellow or brown due to trace impurities.
- Melting Point: 10.49°C
- Boiling Point: 338°C
- Solubility: Highly soluble in water
Applications:
Food grade sulfuric acid is primarily used as a coagulant and nutrient in fermentation processes. Typical applications include:
- Processing of beer, starch, and dairy products
- Fermentation operations in food manufacturing
- Cleaning and disinfecting food processing equipment
Product Specifications
Concentrated Sulfuric Acid
| Index | Special Grade | Premium Grade | First Grade | Qualified Grade |
|---|---|---|---|---|
| H₂SO₄ content (%) | ≥ 92.5 or 98.0 | ≥ 92.5 or 98.0 | ≥ 92.5 or 98.0 | ≥ 92.5 or 98.0 |
| Free SO₃ (%) | ≤ 0.02 | ≤ 0.03 | ≤ 0.03 | — |
| Ash (%) | ≤ 0.008 | ≤ 0.010 | ≤ 0.010 | ≤ 0.10 |
| Fe (%) | ≤ 0.0001 | ≤ 0.0001 | ≤ 0.0005 | — |
| As (%) | ≤ 8×10⁻⁶ | ≤ 8×10⁻⁶ | ≤ 0.01 | — |
| Hg (%) | ≤ 0.00001 | ≤ 0.0001 | — | — |
| (NH₄)⁺ (%) | ≤ 0.0005 | ≤ 0.01 | — | — |
| Cl (%) | ≤ 0.0001 | — | — | — |
| NO₃ (%) | ≤ 0.001 | — | — | — |
| SO₂ (%) | ≤ 0.001 | — | — | — |
| Transparency (mm) | ≥ 160 | ≥ 50 | ≥ 50 | — |
| Chroma (mL) | ≤ 1.0 | ≤ 2.0 | ≤ 2.0 | — |
105 Oleum (Fuming Sulfuric Acid)
105 oleum is a solution of sulfur trioxide in sulfuric acid (H₂SO₄·xSO₃), ranging from colorless to light brown and characterized by fuming when exposed to air.
| Index | Special Grade | Premium Grade | First Grade | Qualified Grade |
|---|---|---|---|---|
| H₂SO₄ content (%) | ≥ 92.5 | — | — | — |
| Free SO₃ (%) | — | ≥ 30.0 | ≥ 30.0 | ≥ 20.0 |
| Ash (%) | ≤ 0.002 | ≤ 0.03 | ≤ 0.03 | ≤ 0.030 |
| Fe (%) | ≤ 0.0005 | ≤ 0.010 | ≤ 0.010 | — |
| As (%) | ≤ 8×10⁻⁶ | ≤ 0.0001 | ≤ 0.0001 | — |
| Hg (%) | ≤ 0.00001 | ≤ 0.0001 | — | — |
| (NH₄)⁺ (%) | ≤ 0.0005 | ≤ 0.01 | — | — |
| Cl (%) | ≤ 0.0001 | — | — | — |
| NO₃ (%) | ≤ 0.001 | — | — | — |
| Transparency (mm) | ≥ 160 | — | — | — |
| Chroma (mL) | ≤ 1.0 | — | — | — |
Liquid Sulfur Trioxide (SO₃)
Liquid SO₃ is a colorless, oily liquid with a strong irritating odor. Its density, melting point, and boiling point are highly dependent on SO₃ concentration.
- Melting Point: 16.8°C
- Boiling Point: 44.8°C
- Oxidizing Properties: Extremely strong oxidizer
| Item | Premium Grade | First Grade | Qualified Grade |
|---|---|---|---|
| Appearance | Colorless transparent liquid | Colorless or slightly colored transparent liquid | — |
| SO₃ mass fraction (%) | ≥ 99.7 | ≥ 99.5 | ≥ 99.0 |
| SO₂ mass fraction (%) | ≤ 0.20 | ≤ 0.40 | — |
| Nitrogen oxides (%) | ≤ 0.05 | ≤ 0.40 | — |
| Fe (%) | ≤ 0.02 | ≤ 0.30 | — |
Safety Information:
Sulfuric acid is highly corrosive and toxic. Handle with appropriate safety equipment, including gloves, goggles, and acid-resistant clothing. Avoid contact with skin, eyes, and mucous membranes. In case of contact, rinse immediately with plenty of water and seek medical attention.
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