Ethylene Glycol Inhibited ACS Grade

Product Overview

Ethylene Glycol Inhibited ACS Grade is a colorless, viscous liquid with a slight, sweet odor. This ACS-grade diol is characterized by a high boiling point and low freezing point, enabling reliable performance as an antifreeze and coolant across automotive, industrial, and laboratory systems. The inhibited formulation minimizes oxidation and degradation, helping to preserve system integrity in long-term use. Its hygroscopic nature supports moisture control in formulations, while its miscibility with water and a broad range of organic solvents facilitates versatile process integration. Typical assay values indicate a purity range of 99.0–100.5 wt%, with very low residual water content (typical ~0.02%, max 0.05%), ensuring minimal dilution in critical applications. The product is maintained under inert conditions to further reduce oxidative effects and maintain consistency with ACS and USP-NF monographs.

In addition to antifreeze and heat transfer roles, Ethylene Glycol Inhibited ACS Grade serves effectively as a solvent in chemical reactions and as a hydraulic fluid in systems requiring a low freezing point and robust thermal stability. Its high density (≈1.113 g/mL at 25°C), refractive index (≈1.433 at 20°C), and moderate viscosity (≈20.1 cP at 25°C) support precise dosing and predictable flow characteristics in engineered environments. This product complies with ACS Reagent Grade and USP-NF Monograph standards, reflecting rigorous quality control, traceability, and reliable performance in demanding industrial settings.

Key Properties

• Property Name: CAS Registry Number
• Chemical Formula: C₂H₆O₂
• Molecular Weight: 62.07 g/mol
• Boiling Point: 197.6°C
• Freezing Point: -12.9°C
• Specific Gravity (Density) at 25°C: 1.113 g/mL
• Refractive Index at 20°C: 1.433
• Viscosity (25°C): 20.1 cP
• Vapor Pressure (20°C): 0.06 mmHg
• Flash Point (C°): 111°C
• Acidity (Meq/g): Max 0.0003 (typical 0.0001)
• Color (APHA): Max 5 (typical 2)
• Residue After Ignition: Max 0.01% (typical 0.005%)

Common Applications

• Antifreeze and Coolant: Automotive industry—prevents freezing and overheating, protecting engine performance and longevity.
• Heat Transfer Fluid: Industrial processes—serves as a high-boiling, low-freezing medium for efficient thermal management.
• Solvent for Chemical Reactions: Chemical manufacturing—acts as a polar aprotic solvent in organic syntheses and reaction media.
• Hydraulic Fluid: Manufacturing—used in hydraulic systems where a low temperature freeze point and high boiling point are advantageous.
• Moisture Absorber: Pharmaceutical formulations—helps maintain moisture control to prevent degradation of sensitive components.

Safety Precautions

Handle with appropriate PPE (gloves, goggles, and protective clothing) in a well-ventilated area. Store in a cool, dry place away from direct sunlight in compatible containers (HDPE or stainless steel). Keep away from strong oxidizers and acids, and ensure proper ventilation during handling to minimize inhalation exposure. Follow established handling procedures and avoid contact with skin and eyes; in case of contact, rinse thoroughly with water and seek medical attention if irritation persists.

In case of exposure, reference the SDS: the product is classified with the hazard statements H302 (Harmful if swallowed) and H373 (May cause damage to organs through prolonged or repeated exposure). Emergency procedures include evacuating the area if large spills occur, using appropriate absorbent materials for containment, and disposing of waste according to local regulations. For skin or eye exposure, flush with water for several minutes and seek medical evaluation; if inhaled, move to fresh air and monitor for symptoms. In the event of ingestion, rinse the mouth and do not induce vomiting; seek medical advice immediately.

Benefits

✔ High Purity ACS/USP Compliance – Meets ACS Reagent Grade and USP-NF monograph standards, ensuring reliability for analytical and preparative workflows.
✔ Low Water Content – Minimal dilution in critical applications; typical water content around 0.02% with a maximum of 0.05%.
✔ Stable Thermophysical Properties – High boiling point, low freezing point, and robust thermal stability suitable for antifreeze, heat transfer, and solvent applications.