ISO 2908 Petroleum Waxes, Determination of Oil Content
ISO 2908 describes a method of determining the oil content of petroleum waxes with a congealing point of 30°C or more with an oil content of up to 15% by mass. The process involves dissolving the wax in methyl ethyl ketone (MEK), followed by cooling to precipitate the wax, filtration, and subsequent recovery and weighing of the oil fraction. This technique is essential in quality control determination since oils affect some of the major characteristics within oil, like hardness, pliability, and melting, as well as staining tendency.
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ISO 2908 Introduction
ISO 2908 gives a standard method to measure the oil content accurately, but only for waxes within a particular physical range. The petroleum waxes have a variety of liquid hydrocarbons (oil) that influence their mechanical and thermal performance. High oil content may lower hardness, cause the melting point to be lower, and result in a greater chance of oil migration in packaging, coatings, and polishing applications. This will eliminate the need to analyze each of the chemical components in the product individually and can provide the repeatability and consistency required to control production and meet the specifications of the final product.
ISO 2908 Test Method
Principle
Dissolve wax in methyl ethyl ketone, cool to precipitate wax crystals, filter to separate oil-containing filtrate, evaporate solvent, and weigh oil residue.
Scope of Measurement
Waxes with a congealing point ≥ 30°C and ≤ 15% oil content by mass.
Solvent
Methyl ethyl ketone (MEK) of specified purity and dryness.
Assumptions
The method assumes oil is fully soluble in MEK at warm temperatures but remains in solution after wax precipitation at low temperatures.
ISO 2908 Equipment and Sample Preparation
Specimen Details
Representative portion of petroleum wax with a congealing point ≥ 30°C and ≤ 15% oil content.
Specimen Preparation
For small samples, melt and homogenize before testing; for larger lots, take a representative portion, ensuring even oil distribution.
Specimen Dimensions
Approximately 1 g sample size for each determination.
ISO 2908 Results and Interpretation
The percentage of oil is given as the weight of oil to the total weight of the wax sample. Waxes with low oil content are more brittle and hard and have a higher melting point, whereas those with higher oil content, which are soft and plastic, run out of oil over time. Measurement assists manufacturers in customizing wax properties to suit their use in making candles, formulating coatings, and food packaging materials.
Service Name
Remarks
ISO 2908 Testing
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ISO 2908 Related Test Methods
ASTM D721 is used to determine the oil content of petroleum waxes. ISO 2908 works best with low and moderate oil contents of wax because it has accuracy in carrying out separation using solvents.
ISO 2908 Applications in Industry
This method is often used in candle-making industries, packaging materials industries, coatings industries, and polish and adhesive industries, where the oil content influences the quality and stability of the product. Refiners and quality control laboratories use this technique to investigate production consistency as well as to check the buyer’s specifications.
ISO 2908 Materials Commonly Tested
One can mention imperfect dissolution of wax because of the lack of heating, precipitation because of solvent contamination, or an inappropriate cooling procedure that results in incomplete precipitation. These problems can be reduced with the maintenance of correct cooling temperatures and the usage of fresh, dry MEK.
ISO 2908 Common Challenges and Troubleshooting
Imperfect dissolution of wax because of the lack of heating, precipitation because of solvent contamination, or an inappropriate cooling procedure that results in incomplete precipitation. These problems can be reduced with the maintenance of correct cooling temperatures and the usage of fresh, dry MEK.
ISO 2908 Safety and Best Practices
MOK is also flammable and ought to be poured in a highly ventilated place, free of ignition points. The operators must use the safety goggles, gloves, and lab coats. The disposal of waste solvents and residues should be done as required by the environment.
Importance of ISO 2908 Test Method
The oil content is crucial in the prediction of the physical behavior of petroleum wax in its intended end-use behavior. The procedure described in this method is reliable, repeatable, and internationally recognized. It thus can be used to ensure consistency in the control of quality and the comparability of results obtained in different laboratories and production facilities.
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FAQ's
Where can I get the iso 2908 tested?
You can share your iso 2908 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific iso 2908 test to various testing techniques.
How much do I need to pay for the iso 2908 test?
Please contact us for a detailed quote for your iso 2908 testing needs. Cost incurred to carry out different iso 2908 testing methodology depends on the type of raw material; number of samples, coupons, or specimens; test conditions, turn around time etc. Costs of some ASTM testing methods start from $100 and the final value depends upon the factors listed above. Please contact us for the best and latest prices.
How many samples are required for iso 2908?
The required number of samples or specimens should comply with the procedure given in the iso 2908 standard. However, the MaTestLab operations team can assist you for your special requirements once you share your testing details with us.
How much discount can I get on the iso 2908 test?
MaTestLab has a vast testing laboratory network, hence we bring you the best testing facilities in a cost-effective way. We offer considerable discounts (15-20%) to our returning customers based on test volume and frequency.
How many days will it take to complete the iso 2908 test?
The turnaround time for iso 2908 test methodology depends upon the test procedure mentioned in the standard test document. However, we at MaTestLab understand your research requirements and hence try to get your test completed within the least possible time.
Where can I get the iso 2908 tested?
You can share your iso 2908 testing requirements with MaTestLab. MaTestLab has a vast network of material testing laboratories, spread across the USA and Canada. We support your all material testing needs ranging from specific iso 2908 test to various testing techniques.
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