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Ortho-Phosphoric Acid 85% from Merck (EMSURE®) is a high-purity analytical reagent (AR) grade acid designed for precision laboratory and industrial applications. Known for its exceptional quality and chemical stability, this reagent meets ACS, ISO, and Ph Eur standards, making it suitable for analytical testing, sample preparation, and pH adjustment.
With a purity of 85%, this phosphoric acid (H₃PO₄) is commonly used in laboratories, research facilities, and industrial processes that require high chemical accuracy. It is a clear, colorless, and viscous liquid that acts as both an acidifying and dehydrating agent, offering consistent performance even under demanding analytical conditions.
Because of its trace impurity control, this reagent guarantees reproducibility in all analytical results — a hallmark of Merck’s EMSURE® line, trusted globally for its precision and reliability.
Due to its versatility and controlled purity, Ortho-Phosphoric Acid 85% is widely used across multiple industries:
Its broad applicability and high stability make it indispensable in both laboratory and production settings.
| Property | Specification |
|---|---|
| Product Name | Ortho-Phosphoric Acid 85% |
| Chemical Formula | H₃PO₄ |
| Concentration | 85% ± 1% |
| CAS Number | 7664-38-2 |
| Molecular Weight | 97.99 g/mol |
| Boiling Point | ~158°C |
| Melting Point | 21°C |
| Density | 1.70 g/cm³ at 25°C |
| Solubility | Miscible with water and ethanol |
| Appearance | Clear, colorless liquid |
| Packaging Size | 2.5L |
| Manufacturer | Merck (Supelco® / EMSURE®) |
| Compliance | ACS, ISO, Ph Eur Standards |
Choosing Merck EMSURE® Ortho-Phosphoric Acid 85% means investing in accuracy, safety, and proven quality. Here’s why professionals prefer it:
Laboratory-Grade Purity: Meets ACS and ISO standards for reproducible, traceable results.
Versatile Application: Ideal for chemical, industrial, food, and pharmaceutical use.
Superior Stability: Maintains consistent concentration and performance over time.
Global Quality Assurance: Backed by Merck’s ISO-certified manufacturing standards.
Excellent Value: High-quality acid in a durable 2.5L HDPE container ensures safe storage and long shelf life.
Trusted Worldwide: Used in thousands of certified laboratories and industries globally.
Eco-Compliant Packaging: Designed for safe handling, transportation, and storage.
Whether you’re performing critical analytical testing or large-scale production, this product ensures precision, consistency, and compliance every time.
Phosphoric acid is a corrosive liquid and must be handled with appropriate safety precautions.
Proper handling ensures both laboratory safety and long-term reagent integrity.
Q1: What is Ortho-Phosphoric Acid used for?
A1: It’s primarily used in analytical chemistry, industrial cleaning, fertilizer production, and water treatment.
Q2: Can this acid be used for food processing?
A2: Yes, under regulated conditions, it can act as an acidulant and pH stabilizer in food-grade applications.
Q3: Is the product compliant with ISO standards?
A3: Yes, this reagent meets ISO, ACS, and Ph Eur quality requirements.
Q4: How should I store this acid safely?
A4: Store in a cool, dry, and well-ventilated area, in a tightly sealed container away from metals and alkalis.
Q5: What is the shelf life of this product?
A5: When stored properly, it retains its quality and concentration for up to 3 years from the manufacturing date.
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