Hydrochloric Acid 5% Technical Grade

Product Overview

Hydrochloric Acid 5% Technical Grade is a clear, colorless solution of hydrochloric acid (HCl) in water, representing a diluted form of this strong acid. It is formulated to deliver reliable acidity for pH adjustment and processing in industrial settings, with a typical assay range of 4.8–5.2 wt% and a precise preparation designed for consistent performance in both water treatment and chemical synthesis. The solution offers fully soluble characteristics, allowing rapid integration into spray, trickle, or batch dosing systems while maintaining compatibility with common corrosion-resistant materials. The product adheres to technical grade specifications and is validated by rigorous titration and impurity analyses to ensure low trace metals and controlled organics, enabling precise control of acidity and buffering dynamics in your process streams.

As a versatile reagent, this 5% solution is widely used for pH control, metal surface cleaning, and as a reagent in industrial synthesis. Its low odor, stable composition, and controlled impurity profile—verified by ICP-OES and ICP-MS screening for metals such as Fe, Cu, Ni, Cr, and Pb—support safe handling in laboratory and plant environments. The product’s available chlorine, low residue, and defined water content contribute to predictable performance in titrations, buffering operations, and cleaning protocols, while retaining compatibility with HDPE, glass, and stainless-steel process components under recommended storage conditions.

Key Properties

• Appearance: Clear, colorless liquid
• Chemical Formula: HCl
• Molecular Weight: 36.46 g/mol
• Boiling Point: 100°C
• Specific Gravity (20°C): 1.01 (typical)
• Density (25°C): 1.01 g/mL
• Vapor Pressure (20°C): 20 mmHg
• Solubility: Completely soluble in water
• Color (APHA): Max 10 (typical 5)
• Assay (wt % HCl): 4.8–5.2 (typical 5.0) – Test Method: Titration with standardized NaOH
• Residue After Ignition (%): Max 0.01 (typical 0.005) – Test Method: Gravimetric residue after ignition
• Chloride (Cl) ppm: Max 2000 (typical 1000) – Test Method: Ion Chromatography
• Nitrate (NO3⁻) ppm: Max 100 (typical 20) – Test Method: Ion Chromatography
• Ammonium (NH4⁺) ppm: Max 20 (typical 5) – Test Method: Ion Chromatography
• Sulfate (SO4²⁻) ppm: Max 500 (typical 200) – Test Method: Ion Chromatography
• Phosphate (PO4³⁻) ppm: Max 50 (typical 10) – Test Method: Ion Chromatography
• Arsenic (As) ppm: Max 0.01 (typical 0.005) – Test Method: ICP-MS
• Heavy Metals (as Pb) ppm: Max 0.05 (typical 0.02) – Test Method: ICP-MS
• Iron (Fe) ppm: Max 0.2 (typical 0.05) – Test Method: ICP-OES
• Copper (Cu) ppm: Max 0.2 (typical 0.05) – Test Method: ICP-OES
• Manganese (Mn) ppm: Max 0.2 (typical 0.05) – Test Method: ICP-OES
• Nickel (Ni) ppm: Max 0.1 (typical 0.02) – Test Method: ICP-OES
• Lead (Pb) ppm: Max 0.05 (typical 0.01) – Test Method: ICP-OES
• Zinc (Zn) ppm: Max 0.2 (typical 0.05) – Test Method: ICP-OES
• Aluminum (Al) ppm: Max 0.5 (typical 0.1) – Test Method: ICP-OES
• Chromium (Cr) ppm: Max 0.1 (typical 0.02) – Test Method: ICP-OES
• Cobalt (Co) ppm: Max 0.02 (typical 0.01) – Test Method: ICP-OES
• Calcium (Ca) ppm: Max 50 (typical 20) – Test Method: ICP-OES
• Magnesium (Mg) ppm: Max 50 (typical 20) – Test Method: ICP-OES
• Sodium (Na) ppm: Max 5 (typical 2) – Test Method: ICP-OES
• Potassium (K) ppm: Max 5 (typical 2) – Test Method: ICP-OES
• Substances Reducing Permanganate: Passes test – Test Method: Potassium permanganate time test
• Water Content: Max 0.1% (typical 0.04%) – Test Method: Karl Fischer titration
• Acidity (meq): Max 4 (typical 2) – Test Method: Acid-base titration

Common Applications

• pH Adjustment: Water Treatment — Used to lower the pH of process water and adjust alkaline conditions in treatment systems with precise titration control and compatibility with standard dosing equipment.
• Chemical Synthesis: Industrial Manufacturing — Reagent in diverse reactions requiring controlled acidity and high purity, supporting reproducible stoichiometry in batch and continuous processes.
• Metal Cleaning: Metal Processing — Removes oxides and surface contaminants from metal substrates, enabling better adhesion of coatings and improved surface finish.
• Laboratory Reagent: Research Laboratory — Used in titrations, calibrations, and analytical protocols requiring a reliable acid standard with low trace metal content.
• Food Processing: Food Industry — pH control and processing aid in certain formulations under approved handling and sanitation protocols.

Safety Precautions

Handle and store the product in accordance with the Safety Data Sheet. Store in a cool, dry place away from direct sunlight, using corrosion-resistant containers (HDPE or glass). Ensure proper ventilation to prevent vapor accumulation and avoid contact with incompatible materials such as strong bases and oxidizers. Wear appropriate PPE, including chemical-resistant gloves, goggles, and protective clothing, and follow standard operating procedures for handling corrosive acids to minimize exposure risk.

In case of exposure, follow emergency procedures: for eyes or skin contact, rinse immediately with copious water for several minutes and remove contaminated clothing; for inhalation, move to fresh air and seek medical attention if irritation persists; for ingestion, rinse mouth and do not induce vomiting, seeking medical advice if symptoms occur. This product complies with Technical Grade specifications and requires SDS accessibility for comprehensive hazard information and first-aid measures.

Benefits

✔ Technical Grade Reliability – Meets defined Technical Grade specifications with low impurity levels and trace metal controls validated by ICP-OES/ICP-MS analyses.
✔ Controlled Acidity – Assay tightly maintained around 5% with explicit titration-based verification for consistent pH adjustment performance in process streams.