Description
Specifications Table
Product Name – n-Octane
Quantity/Pack Size – 100 ml
Form – Liquid
Grade – Laboratory Reagent (LR), 99%+
Application – Chromatography, fuel testing, organic synthesis
Product Overview
n-Octane is a straight-chain hydrocarbon solvent renowned for its high purity (99%+) and consistent performance in laboratory applications. As a non-polar, hydrophobic solvent, it serves as an essential reference standard in gasoline octane rating tests and a mobile phase in gas chromatography due to its predictable elution behavior. Its low autoignition temperature (220°C) and narrow boiling range (125-127°C) make it particularly valuable for fuel research and combustion studies. The solvent’s excellent chemical stability ensures minimal interference in analytical procedures, while its low water solubility (<0.015 g/L at 25°C) prevents unwanted reactions in moisture-sensitive applications. Packaged in amber glass bottles to prevent photodegradation, this n-Octane variant maintains its integrity during storage and transportation. The laboratory reagent grade certification guarantees compliance with standard test methods, making it suitable for both qualitative and quantitative analyses. Its versatility extends to organic synthesis as an inert reaction medium, particularly for non-polar reactants. The solvent's high vapor pressure (14.5 mmHg at 25°C) facilitates easy removal post-reaction, while its low viscosity (0.51 cP at 25°C) enables precise volumetric measurements in analytical workflows.
FAQs
1. What is the shelf life of this n-Octane when stored properly?
When stored in its original amber glass container at room temperature (15-25°C) away from direct sunlight and ignition sources, this n-Octane maintains its specified purity for at least 24 months from the date of manufacture. The container should remain tightly sealed when not in use to prevent evaporation and contamination.
2. Can this n-Octane be used as a calibration standard for gas chromatographs?
Yes, this 99%+ pure n-Octane is suitable for GC calibration due to its consistent composition and well-documented retention time. Its narrow boiling range ensures reproducible peak shapes, while the laboratory reagent grade certification guarantees minimal interfering impurities that could affect baseline stability.
3. What precautions should be taken when handling this solvent?
As a highly flammable liquid (flash point 13°C), n-Octane should be handled in a well-ventilated fume hood away from open flames and static discharge sources. Use chemical-resistant gloves (nitrile recommended) and safety goggles. The low odor threshold (140 ppm) provides some warning of exposure, but proper ventilation is essential to maintain concentrations below the 300 ppm TWA exposure limit.
4. How does this n-Octane compare to technical grade alternatives?
This laboratory reagent grade n-Octane contains significantly fewer impurities (<0.5% total) compared to technical grade variants which may contain up to 5% hydrocarbons and other contaminants. The tighter specification ensures more reliable analytical results, particularly in trace analysis where background interference must be minimized.
5. What is the typical evaporation rate of this n-Octane?
The evaporation rate relative to butyl acetate (standard reference) is approximately 0.3, meaning it evaporates about 30% as quickly. This moderate volatility allows sufficient working time for sample preparation while still enabling complete removal when required for analytical procedures. The rate increases with temperature and airflow.
