Sulfuric Acid EL Grade (H2SO4 EL)

Description

1. Product Overview

Sulfuric Acid EL Grade (H₂SO₄ EL) is a high-purity, electronic-grade mineral acid engineered for ultra-trace metal contamination control, specifically formulated for semiconductor fabrication, analytical laboratories, and high-reliability chemical processing. Its primary industrial use lies in wafer cleaning, wet etching, and critical pH adjustment in microelectronics manufacturing. The key value proposition is unmatched ionic purity (sub-ppb metal content), ensuring defect reduction and yield optimization in advanced node production. Strategically, this product is indispensable for the global transition to 5nm and 3nm chip architectures, where any metallic impurity directly compromises device performance.

2. Key Specifications & Technical Characteristics

• Chemical Composition: H₂SO₄ (CAS 7664-93-9) with deionized water; stabilizer-free to prevent residue

• Purity Level: EL Grade (Electronic Grade) – 96% ± 1% w/w

• Metal Impurity Max: < 1 ppb per element (Li, Na, Mg, Al, K, Ca, Cr, Mn, Fe, Ni, Cu, Zn, Ag, Cd, Sn, Pb)

• Anion Impurities: Chloride (Cl⁻) < 50 ppb; Nitrate (NO₃⁻) < 100 ppb; Phosphate (PO₄³⁻) < 100 ppb

• Physical Form: Clear, colorless, odorless viscous liquid; density ~1.84 g/cm³ at 20°C

• Packaging Options:

  • 2.5L HDPE safety-coated bottles (lab/QA use)

  • 200L chemically inert drums (pilot batches)

  • 1,000L IBC totes (production scale)

  • ISO tank containers (bulk industrial)

• Shelf Life: 24 months from date of manufacture when stored in original sealed container at 15–30°C, away from moisture and direct light

3. Core Industrial Applications

• Semiconductor & Microelectronics: Wet etching of silicon nitride and oxide layers; RCA SC-1/SC-2 cleaning baths for wafer pre-diffusion and post-CMP. Why better: EL Grade eliminates metal-induced junction leakage, increasing die yield by 2–4% versus standard reagent grade.

• Analytical & Pharma QC: Sample digestion for ICP-MS and trace metal analysis; mobile phase preparation in ion chromatography. Advantage: Guaranteed blank baseline eliminates false positives, reducing costly re-runs.

• Advanced Battery Materials: Purification of electrolyte salts (LiPF₆) and cathode precursor washing. Cost advantage: Lower impurity load reduces downstream purification steps, cutting total production cost by up to 8%.

• High-Purity Chemical Synthesis: Catalyst for nitration and sulfonation reactions in specialty polymer manufacturing. Efficiency gain: Consistent water content (±1%) ensures reproducible reaction kinetics without process deviation.

4. Competitive Advantages

• Quality Consistency: ISO 9001:2025 and SEMI C36-0624 certified; lot-to-lot coefficient of variation < 0.3% for all trace metals – validated by triple-quad ICP-MS.

• Supply Reliability: Dedicated EL-grade production line with no co-mingling with industrial-grade acid; buffer stock of 500MT across three regional hubs (North America, Europe, Asia-Pacific).

• Logistics Capability: Inert-coated ISO tanks and real-time GPS-tracked fleet; average lead time 5–7 business days for cross-continental bulk delivery.

• Price Competitiveness: Lower total cost of ownership (TCO) due to reduced defect-driven rework – typically 15–20% lower than incumbent ultra-high-purity suppliers for equivalent specifications.

• Sustainability & Safety: 100% recyclable packaging; acid neutralization and reuse program for post-use rinse water (ISO 14001 certified); full GHS-compliant SDS and batch-specific CoA available via API integration.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ):

  • Bottles/drums: 100 L

  • IBC totes: 1,000 L

  • BULK: 20 MT per single shipment (ISO tank equivalent)

• Loading Capacity:

  • 20-foot ISO tank container: 24 MT (max net weight)

  • 20-foot general purpose container (with drums/IBCs): 20 MT per TEU