HYDROCHLORIC ACID ANALPURE®

Importance of the topic

High-purity hydrochloric acid is a foundational reagent across analytical chemistry, pharmaceuticals, semiconductor manufacturing and quality assurance laboratories. Precise knowledge of its composition and impurity profile ensures reproducibility, protects sensitive instrumentation and safeguards downstream processes from contamination.

Objectives and overview

This Certificate of Analysis documents the batch-level assessment of ANALPURE® hydrochloric acid (Batch 2061), reporting key quality parameters including color, free and total halogens, major anions and cations, assay strength and a comprehensive trace impurity panel. The goal is to confirm compliance with stringent specifications for research and industrial use.

Methodology and instrumentation

Although specific protocols are not itemized, typical assessments involve:

• Color measurement against the APHA (American Public Health Association) scale.
• Titrimetric determination of free chlorine and assay (HCl concentration).
• Ion chromatography or colorimetric methods for bromide, sulfate, phosphate and ammonium.
• Inductively coupled plasma techniques (ICP-OES or ICP-MS) for multi-element trace impurity screening.

Main results and discussion

The batch exhibits a color of <7 APHA and an assay of 30 %. Halogen contaminants are controlled below 0.5 ppm, total sulfur and phosphorus below 0.3 and 0.01 ppm respectively. Ammonium is <0.5 ppm. All 70 monitored trace elements, including heavy metals and rare earths, are below their maximum allowable concentrations (from 0.1 to 1 ppm), with many falling below instrument detection limits. This profile underscores the acid’s ultra-low background and suitability for contamination-sensitive applications.

Benefits and practical applications

• Guarantees reproducibility in analytical assays and titrations.
• Prevents trace metal interference in spectroscopic and mass-spectrometric analyses.
• Suitable for semiconductor wafer cleaning and etch processes.
• Ideal reagent grade for pharmaceutical formulation and biological sample preparation.

Future trends and potential applications

Advances in ultratrace detection will drive demand for even lower impurity matrices, promoting the adoption of sub-ppb certified acids. Sustainable production methods, closed-loop acid recovery and real-time purity monitoring using online sensors and AI-driven analytics represent emerging directions.

Conclusion

Analytika’s ANALPURE® hydrochloric acid batch 2061 demonstrates rigorous quality control, delivering high purity and consistent performance for critical analytical and industrial workflows. Its certified low impurity profile supports applications where contamination control is paramount.