High-purity hydrofluoric acid (HF)

Description

1. Product Overview
High-purity hydrofluoric acid (HF) is an essential inorganic chemical intermediate, produced through advanced distillation and purification processes to achieve sub-ppm trace metal content. It is primarily utilized in the semiconductor, photovoltaic (PV), and fluorochemical industries for precision etching, cleaning, and synthesis. The key value proposition lies in its ultra-low metallic impurity profile, which directly enhances yield rates in high-tech manufacturing. As global electronics and energy transition supply chains intensify, securing a reliable source of high-purity HF is a strategic imperative for mitigating production downtime and ensuring end-product reliability.

2. Key Specifications & Technical Characteristics

• Chemical composition: Hydrogen fluoride (HF) in deionized water

• Purity level / Grade: Semiconductor grade (49% ± 0.5% HF, with trace metals: Al, As, Cu, Fe, Na, Pb each < 0.1 ppb; anions: Cl⁻, SO₄²⁻, PO₄³⁻ each < 0.1 ppm)

• Physical characteristics: Clear, colorless, fuming liquid; density ~1.15 g/mL (at 20°C); pungent odor; highly corrosive

• Packaging options: 1,000 L IBC tote (fluorinated HDPE), 200 L fluorinated drum, 25 L fluorinated jerry can, or ISO tank for bulk liquid

• Shelf life: 12 months from date of manufacture when stored in original sealed fluorinated containers under dry, cool (5–30°C), and well-ventilated conditions

3. Core Industrial Applications

• Semiconductor & electronics: Silicon wafer cleaning (RCA process), oxide etching, and quartz tube cleaning – superior consistency minimizes micro-etching variation vs. standard grades, directly raising die yield by 1–3%.

• Solar photovoltaics (PV): Texture etching of monocrystalline and polycrystalline silicon wafers – produces more uniform pyramid structures for higher light absorption compared to lower-purity alternatives, improving cell efficiency by 0.2–0.4%.

• Fluorochemical synthesis: Production of PTFE, fluorinated refrigerants, and LiPF₆ for EV batteries – ultra-low metal content prevents catalyst poisoning and extends reactor run lengths, lowering total cost of ownership by ~8–12% versus semigrade substitutes.

4. Competitive Advantages

• Quality consistency: Statistical process control (SPC) with lot-to-lot COAs; zero excursions on critical metals in last 24 months – audited to IATF 16949:2016 standards.

• Supply reliability: Dual-source raw material strategy and three geographically redundant filling hubs (Asia, Europe, North America) ensuring 99.5% on-time in-full (OTIF) delivery.

• Logistics capability: Fleet of ADR/RID-certified tankers and 24/7 GPS-monitored shipments with emergency response team coverage.

• Price competitiveness: Direct mining-to-manufacturer integration removes 2–3 intermediary layers; fixed quarterly pricing available for ≥12-month contracts.

• Sustainability & compliance: Zero liquid discharge (ZLD) at production sites; full REACH, TSCA, and K-REACH registration; available carbon footprint declaration per ISO 14067.

• Technical support: Dedicated application lab for etch-rate optimization; same-day digital COA access; on-site safety training for buyer’s procurement and operations teams.

5. Commercial & Supply Information

• Minimum order quantity (MOQ): 5 MT (or one ISO tank equivalent)

• BULK 20MT Loading capacity: 20 MT per 20-ft ISO tank container (maximum net weight) – equivalent to one full container load