Hydrofluoric Acid (HF UP GRADE)

Description

1. Product Overview
Hydrofluoric Acid (HF UP GRADE) is an ultra-high purity, low-particulate etching and cleaning agent engineered specifically for the most demanding semiconductor and photovoltaic manufacturing processes. Its primary industrial use lies in wet etching of silicon dioxide and wafer surface conditioning, where ionic and metallic contaminants must be measured in parts-per-trillion (ppt). Strategically, this grade is critical for yield optimization in sub-10nm node fabrication; any deviation in purity directly translates to billions of dollars in potential scrapped wafers, making this not a commodity but a mission-critical process material.

2. Key Specifications & Technical Characteristics

• Chemical Composition: Aqueous solution of hydrogen fluoride (HF) in deionized water.

• Purity Grade: UP Grade (Ultra-Pure) – >49% HF concentration.

• Maximum Metal Impurities: <0.1 ppb (parts-per-billion) per critical element (e.g., Al, Ca, Cr, Cu, Fe, Na, Ni, K, Zn).

• Anion Impurities (Chloride, Sulfate, Phosphate): <1 ppm each.

• Particle Count: <100 particles/mL (≥0.2 µm size).

• Physical Characteristics: Clear, colorless, fuming liquid with sharp odor; density approx. 1.15 g/mL at 20°C.

• Packaging Options: High-purity polyethylene (HDPE) drums (200L), IBC totes (1000L), or fluoropolymer-lined isotainers for bulk.

• Shelf Life: 12 months from date of manufacture when stored in original sealed container at 5–30°C, away from direct sunlight.

3. Core Industrial Applications

• Primary Industries: Semiconductor fabrication (fabs), photovoltaic (PV) cell manufacturing, MEMS, and flat-panel display production.

• Specific Use Cases:

  • Silicon dioxide (SiO₂) etching for trench isolation and gate stack formation.

  • Wafer cleaning (RCA process – DHF step) to remove native oxide and metallic residues.

  • Texturing of monocrystalline silicon solar cells to reduce reflectivity.

• Why HF UP Grade outperforms alternatives: Standard technical or even ACS-grade HF introduces metallic precipitates that cause junction leakage and device failure. UP Grade’s ppt-level metal control ensures >99.9% die yield on advanced nodes. Cost advantage: prevents entire batch rework, which can exceed $1M per hour of downtime.

4. Competitive Advantages

• Quality Consistency: Six Sigma-controlled production with real-time ICP-MS monitoring for 67 trace metals; batch-to-batch variation <2% RSD.

• Supply Reliability: Dedicated, corrosion-resistant fluoropolymer supply chain with dual sourcing from ISO 9001:2025-certified plants in Asia and North America.

• Logistics Capability: Temperature-monitored tanker fleet and secondary containment packaging standard (UN 1790, Class 8, PG I/II).

• Price Competitiveness: Volume-based tier pricing that beats incumbent suppliers by 8–12% on landed cost for >20MT contracts.

• Technical Support: Full Certificate of Analysis (CoA) per batch + 24/7 process integration engineering support.

• Sustainability: Closed-loop returnable isotainer program reduces single-use drum waste by 70%.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): BULK 20 metric tons (MT)

• Loading Capacity: 20 MT per 20-foot container (ISO tank container), or 22 MT per flexitank (HDPE-lined) for break-bulk shipments.

• Lead Time: 14 days from purchase order confirmation for repeat orders; 30 days for initial qualification batch.