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Ultra-high purity (>99.9% H₂SO₄) with minimal trace metals (e.g., Fe < 1 ppm, As < 0.1 ppm) for sensitive chemical synthesis.
Consistent batch-to-batch quality certified via ASTM D2973 and ISO 9001-controlled manufacturing.
Low volatility and stabilized formulation reducing fuming risk during storage and handling.
Optimized for low chloride and nitrate impurities (< 5 ppm each), critical for electroplating and semiconductor cleaning.
Supplied in corrosion-resistant HDPE or lined stainless-steel containers compliant with UN 1830 transport regulations.
Electrolyte preparation in high-precision copper and zinc electrowinning processes.
Cleaning and passivation of stainless-steel components in pharmaceutical and biotech equipment.
Catalyst regeneration in petrochemical refining units requiring ultra-low contaminant profiles.
Reagent-grade acid for analytical chemistry (e.g., EPA Method 300.0, ASTM E2932).
Feedstock in the production of high-purity titanium dioxide (TiO₂) pigments via the sulfate process.
| Chemical Type | Sulfuric Acid (H₂SO₄) |
| Product Form | Liquid, concentrated aqueous solution |
| Appearance | Clear, colorless, oily liquid; no suspended matter |
| Assay (H₂SO₄) | 99.9–100.1% w/w (by titration per ASTM D2973) |
| Specific Gravity (25°C) | 1.830–1.840 g/cm³ |
| Residue on Evaporation | < 10 ppm (per ASTM D2974) |
| Key Impurities (max) | Fe: 1 ppm; As: 0.1 ppm; Cl⁻: 5 ppm; NO₃⁻: 5 ppm |
| Regulatory Compliance | REACH registered; compliant with USP/EP grade water solubility requirements; non-GMO, non-animal origin |
| Common Compatible Systems | Suitability |
| 316L Stainless Steel Piping & Tanks | Highly Recommended – Excellent resistance at ambient to 50°C; passivated surface required |
| Fluoropolymer-Lined Carbon Steel Vessels (e.g., PTFE/FEP) | Highly Recommended – Ideal for long-term storage and transfer of concentrated acid |
| HDPE/PP Storage Tanks (ASTM D1998-compliant) | Recommended – Suitable for short-to-medium term storage below 40°C |
| Standard PVC Conduits & Fittings | Suitable – Acceptable only for diluted solutions (< 30% w/w) and intermittent use |
Q1: What is the CAS Registry Number for Refined Sulfuric Acid?
A: The CAS Number is 7664-93-9, corresponding to anhydrous sulfuric acid; our refined grade meets the same identity specification with enhanced purity controls.
Q2: Can Refined Sulfuric Acid be used directly in food-contact equipment cleaning?
A: Yes — when diluted to ≤1% w/w and thoroughly rinsed, it complies with FDA 21 CFR §173.350 for indirect food additive use; full documentation available upon request.
Q3: How does Refined Sulfuric Acid differ from Technical-Grade Sulfuric Acid in terms of metal ion migration risk?
A: Refined grade reduces leachable metal ions (e.g., Cr, Ni, Cu) by >95% versus technical grade, significantly lowering contamination risk in high-value catalysts and electronic materials processing.
Q4: Is this product certified under ISO 14001 and OHSAS 18001 / ISO 45001?
A: Yes — manufacturing facilities are dual-certified to ISO 14001:2015 and ISO 45001:2018; full audit reports and CoC available under NDA.
Contact With Us:
E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
