of Petroleum and Petroleum Products (ASTM Practice. D ). MPMS Chapter Determination of Water in Crude Oil by the Distillation Method (ASTM Test. ASTM D Standard Test Method for WATER IN PETROLEUM PRODUCTS AND BITUMINOUS MATERIALS BY DISTILLATION. ASTM D Standard Test Method for Water in Petroleum Products and Bituminous Materials by Distillation.
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Strategies for Removing Water from Oil. These include aldehydes, higher phenols, modified mercaptans, ketoacids, polysiloxanes, sulfides and metal oxides.
Apparatusfor Water Content in Petroleum Products. If a metal still with a removable cover is used, insert a gasket of heavy paper, moistened with solvent, between the still body and the cover.
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. A wide variety of astm d95 options are available to you, such as paid samples.
Some products have stock, contact us anytime to get more information. Create your own user feedback survey. Summary of Test Method 4. Typical assemblies are illustrated in Fig. Current edition approved May 1, However, alcohols cannot be completely removed from KF reagents, because the presence of alcohol is required by the mechanism of the KF reaction.
Coulometric KF is most accurate in the range of 1 ppm to 5 percent water.
Analyzing Water in Oil
In fact, we are the only supplier who can provide both the main host and accessories in China. However, due to solubility and reactivity issues described above, analysts often drastically reduce sample size, which tends to reduce the reproducibility of test results.
You can ensure product safety by selecting from certified suppliers, including 42 with Other, 24 with ISO certification. The procedure involves adding the oil sample to the solvent present in the evaporation chamber where it dissolves in the solvent, and in the process forms a binary azeotrope between the solvent and the sample’s water content. The subsequent oxidation of the alkylsulfite salt to an alkylsulfate salt by iodine consumes water in a 1: Heating efficiency is promoted greatly with good contact between the heating element and the glass vessel.
A gas ring burner with ports on the inside circumference shall be used with the metal still. Petroleum distillate Volatile spirits FIG. Toggle navigation Toggle search.
For those oil samples which fail to adequately dissolve even when using KF reagents formulated with organic co-solvents, or those that are suspected of containing interfering compounds, an indirect KF analysis using an oil evaporator is recommended, as described below.
Methods of test for petroleum and its products. How is the technical services on the product9 Engineer available to service machinery overseas.
Oils have limited solubility in alcohols, such as methanol, which are typically used in common KF reagent formulations, while they are fully soluble in organic solvents like chloroform, toluene and xylene.
Coulometric KF is considered an absolute method because time and current can both be accurately measured.
Types of Titration Volumetric KF Volumetric KF proceeds in the conventional manner of a classic titration, in that the titrant containing iodine is added mechanically to the solvent containing the sample by the titrator’s burette Figure 1.
Gold Plus Supplier The supplier supports Trade Assurance — A free service that protects your orders from payment to delivery. Read the volume of the water in astk trap to the nearest scale division. Finding the Source of Water Contamination in Oil.
Preferred connections are ground joints for glass and O-rings for metal to glass. Distillation ml Flask Heater Part Number The Seta Distillation Flask Heater is a regulated heating mantel which has the capacity to accommodate a ml flask.
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The supplier supports Trade Assurance — A free service that protects your orders from payment to delivery. The precision when using the 2-mL trap or a 5—mL trap has not been established.
NOTE 1—Volatile water-soluble material, if present, may be measured as water. A number in parentheses indicates the year of last reapproval.
Reactivity Certain compounds in the oil will undergo interfering side reactions either with methanol or iodine components of KF reagents. A number of lubricating oil additives are reactive and are known to interfere with direct KF titration.
Used oils may also contain contaminants that can potentially interfere with direct KF analysis, such as trace metals, polyaromatic hydrocarbons, polychlorinated biphenyls, as well as various products of incomplete combustion. As a guideline, sample sizes shown in Table 1 are recommended for volumetric and coulometric KF, respectively.
Analyzing Water in Oil
Percent may be determined by mass or by volume. Understanding Oil’s Saturation Point.
Recommended Sample Sizes for KF Analysis Sample Size Selection For both direct and indirect KF methods, sample size selection is critical for minimizing errors associated with sample weighing, transfer and injection. KF analysis is a versatile and robust analytical tool for water content analysis in oil samples, and can detect water in any of three states commonly found in oils.