High-purity sulfuric acid (battery grade)

1. Product Overview
This product is a high-purity, battery-grade sulfuric acid (H₂SO₄), specifically refined to meet the stringent electrolyte requirements of lead-acid battery manufacturing. Its primary industrial use is as the critical active electrolyte component in automotive, industrial, and stationary energy storage batteries. The key value proposition is exceptionally low impurity levels (particularly trace metals and chlorides) that directly enhance battery cycle life, cold-cranking performance, and shelf stability. Strategically, as global demand for reliable energy storage and start-stop vehicle systems intensifies, securing a consistent, high-purity sulfuric acid supply is a non-negotiable enabler for battery OEMs and aftermarket suppliers.

2. Key Specifications & Technical Characteristics

• Chemical composition: H₂SO₄ – balance deionized water; impurity limits: Fe ≤ 5 ppm, Mn ≤ 0.5 ppm, Cl ≤ 1 ppm, As ≤ 0.1 ppm

• Purity level: 98.0% – 98.5% H₂SO₄ by weight (battery grade, conforming to GB/T 625-2007 / ASTM D511)

• Physical characteristics: Clear, colorless, odorless oily liquid; density @20°C: 1.835–1.840 g/cm³

• Packaging options: 35 kg HDPE carboys, 330 kg IBC totes, bulk ISO tank containers, and customer-spec drums

• Shelf life: 24 months when stored in sealed, corrosion-resistant containers between 5–35°C, away from organic materials

3. Core Industrial Applications

• Primary industries: Lead-acid battery manufacturing (SLI, deep-cycle, VRLA, start-stop EFB/AGM), industrial energy storage, and uninterruptible power supply (UPS) systems

• Specific use cases: Electrolyte formulation for automotive starter batteries; acid filling for stationary telecom backup batteries; electrolyte replenishment for motive power (forklift/traction) batteries

• Why it performs better: Ultra-low iron and manganese content prevent anodic corrosion and self-discharge, extending battery cycle life by up to 20% compared to standard technical-grade acid. Reduced chloride levels eliminate grid corrosion risk, delivering superior cold-cranking amp (CCA) consistency.

• Cost advantage: Higher purity reduces battery warranty claims and premature failure rates, directly lowering total cost of ownership (TCO) for battery manufacturers.

4. Competitive Advantages

• Quality consistency: ISO 9001:2025 certified batch-to-batch uniformity with full traceability; each shipment includes certificate of analysis (CoA) from an independent lab.

• Supply reliability: Dedicated stainless-steel lined production lines and bulk storage (15,000 MT capacity) ensure year-round availability, unaffected by seasonal fertilizer acid demand shifts.

• Logistics capability: Global export network with hazmat-certified warehousing in Rotterdam, Houston, and Shanghai; average lead time 14–21 days FOB.

• Price competitiveness: Direct-from-refinery pricing with long-term contract options (quarterly price adjustment mechanisms tied to sulfur feedstock indices).

• Sustainability: 94% of production energy from cogeneration; recyclable packaging options; full compliance with REACH, RoHS, and GHS labeling.

• Technical support: Dedicated battery chemist on-call for acid mixing optimization and failure analysis; full safety data sheets (SDS) and handling manuals provided.

5. Commercial & Supply Information

• Minimum order quantity (MOQ): 20 metric tons (MT)

• BULK 20MT Loading capacity: 20 MT per 20-foot ISO tank container (max net weight)

• Incoterms offered: FOB, CIF, CFR

• Payment terms: LC at sight, LC 30 days, or TT advance for first order