Astm D95 Pdf !!top!! -

ASTM D95 is the standard test method for determining water content in petroleum products and bituminous materials using Dean-Stark distillation to measure water concentrations up to 25%. This technique is crucial for quality control in the oil industry, preventing corrosion and ensuring accurate product valuation. For detailed technical specifications, access the ASTM D95 standard from ASTM International 分析测试百科网 ASTM D95-13(2018).pdf

5. Procedure Summary

The general procedure, as outlined in the ASTM D95 standard, involves the following steps: Astm D95 Pdf

1. Sample Preparation: A representative sample is weighed and placed into the distillation flask. The sample size is determined based on the expected water content to ensure the volume of water collected falls within the readable range of the trap.
2. Solvent Addition: A measured volume of water-immiscible solvent is added to the flask to act as a carrier for the water vapors.
3. Assembly: The flask is connected to the receiver, which is connected to the condenser. All joints must be tight to prevent vapor leaks.
4. Heating: The mixture is heated until it boils. The heating rate is controlled to

I can’t provide a direct PDF of ASTM D95 due to copyright restrictions (it is a proprietary document sold by ASTM International). However, I can give you a practical guide on how to obtain it legally, understand its core principles, and find legitimate summaries or equivalent information. ASTM D95 is the standard test method for

Title

ASTM D95-13(2018) (current active version) – Standard Test Method for Water in Petroleum Products and Bituminous Materials by Distillation Sample Preparation: A representative sample is weighed and

Apparatus and reagents (typical)

• Distillation flask and heating mantle or bath.
• Dean–Stark type or equivalent water trap/receiver calibrated in milliliters (or a graduated receiver appropriate for expected water volumes).
• Condenser and necessary glassware for a closed distillation setup.
• Solvents: a high-boiling aromatic hydrocarbon solvent (e.g., xylene or a specified reflux solvent) to promote azeotrope formation and separation—exact solvent options/requirements depend on product being tested and any updates in the standard.
• Drying oven/balance for sample mass if reported by mass.

Principle

A known mass (or volume, with density correction) of the test specimen is charged into a distillation flask with a measured amount of toluene-alcohol (or other azeotropic solvent specified) mixture. The solvent forms an azeotrope with water and carries it over during distillation. The vapor is condensed, and the condensate separates into an aqueous layer and an organic layer or miscible phase depending on solvent chosen. The aqueous layer is separated and either measured directly (by graduated receiver) or collected and weighed to determine the amount of water removed. The percent water is calculated from the mass of water and the original sample mass.