Hydrochloric Acid 37% ACS Reagent Grade

Product Overview

Hydrochloric Acid 37% ACS Reagent Grade is a high-purity, inorganic mineral acid formulated for analytical and laboratory applications where stringent purity is critical. Also known as high-grade Muriatic Acid, Hydrogen Chloride solution, or Spirits of Salt, this 37% w/w HCl solution provides a strongly acidic medium suitable for pH adjustment, sample digestion, and chemical synthesis.

Prepared to meet the rigorous standards of Reagent Chemicals (11th Edition) and USP-NF Monograph requirements, this product features controlled trace metal content and low residue after evaporation. It ensures reproducible results in sensitive procedures. The clear to pale yellow liquid has a density of approximately 1.19 g/mL at 25°C. A lot-specific Certificate of Analysis (COA) is available to validate performance parameters, including assay accuracy and impurity profiles, supporting compliance in regulated industrial and laboratory environments.

Key Properties

• Appearance: Colorless to pale yellow liquid
• Chemical Formula: HCl
• Molecular Weight: 36.46 g/mol
• Boiling Point: 100°C (azeotrope with water)
• Specific Gravity (20°C): 1.19 (range 1.18 – 1.20)
• Residue After Ignition: Max 0.01% (typical 0.005%)
• Chloride (Cl): Max 3,000 ppm (typical 1,500 ppm)
• Nitrate (NO3⁻): Max 5 ppm (typical 2 ppm)
• Heavy Metals (as Pb): Max 0.1 ppm (typical 0.02 ppm)
• Iron (Fe): Max 0.2 ppm (typical 0.05 ppm)
• Available Chlorine (Cl₂): 99–100% (typical 99.6%)

Common Applications

• Laboratory Reagent: Utilized for standard calibration, sample digestion, and analytical titrations in high-purity chemistry labs ensuring traceable results.
• pH Adjustment: Industrial water treatment and laboratory workflows use this grade for precise acidification and process control where minimizing contaminants is essential.
• Chemical Synthesis: Serves as a primary reagent in synthesis pathways requiring strong acidity and chloride sources with controlled impurity profiles.
• Metal Processing: Employed for oxide and scale removal in specialized metal finishing and surface preparation applications.
• Catalyst Preparation: Acts as a reactive acid component in catalytic cycles and acid-activated surface treatments within chemical manufacturing.

Safety Precautions

Hydrochloric Acid is corrosive. Handle under a chemical-compatible fume hood with appropriate PPE, including chemical-resistant gloves, splash goggles, face shield, and acid-resistant apron. Store in corrosion-resistant containers (HDPE or glass) away from metals, bases, and organics. Keep containers tightly closed to prevent moisture uptake and vapor release.

In case of exposure, refer to the SDS: flush eyes or skin with water immediately; move to fresh air if inhaled. Transported as UN 1789, Hydrochloric Acid, Class 8, PG II.

Benefits

High-Purity ACS Grade: Meets ACS Reagent Grade specifications for reliable analytical performance in regulated environments.
Low Impurity Profile: Optimized trace metal levels minimize interference in analytical measurements.
Trusted Quality: Manufactured to ensure consistency across batches for industrial and research reliability.

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