Scope: ASTM E1788-16 involves the determination of total acidity as acetic acid in concentrations below 500 μg/g in acrylonitrile. This method is used to determine acidity in low levels. Test Procedure: In ASTM E1788-16 test method, 100 mL of sample and 0.5mL of bromothymol, blue indicator solution are placed in a 250 ml Erlenmeyer flask....
Chemical Analysis
Scope: ASTM E1784-08 is the standard test method that covers the procedure to calculate the total amount of peroxide in acrylonitrile. It can be applied for peroxides in the range 0.1 to 0.6 ppm in acrylonitrile. Peroxides are an undesirable impurity in acrylonitrile. Test Procedure: Peroxides in the sample react with potassium iodide to form...
Scope: This is a standard test method for sampling and analysis of liquid chlorine. ASTM E1746-17a describes a procedure for the determination of oxygen (200 to 400 μg/g), nitrogen (400 to 800 μg/g), and carbon (800 to 1000 ppm) content in liquid chlorine. Test Procedure: A sample of liquid chlorine is trapped in a sampling...
Scope: ASTM E1659-12 test method covers independently the chemical analysis of each surface of zinc-nickel alloy electrolytically coated on a steel sheet. ASTM E1659-12 performs by two test procedure methods:- 1. A procedure for determining the independent mass of coating on each surface of zinc-nickel alloy-coated sheet steel, in coating masses from 20 to 45...
Scope: ASTM D6474-12 is used to determine the molecular weight distribution and molecular weight averages of polyethylene (except LDPE) and polypropylene resins. Physical qualities, such as shape, strength, melt flow, and so on, are greatly affected by differences in molecular weight and molecular weight distribution. As a result, the qualities of items made from these...
Scope: ASTM D5155-19 is crucial for research or quality control to characterize isocyanates used in polyurethane products. All three test methods are essential for determining crude or modified isocyanate content of suitable reactivity and solubility. Test Procedure In all three test methods given in ASTM D5155-19, the isocyanate sample is reacted with an excess amount...
Scope: ASTM D4890-18 method is quite beneficial in determining the color of the clear polyester and polyether liquids. These methods are best applied to those with light absorption characteristics compared to those other compounds. These methods are suitable for research purposes and the tests used for specification and in many quality control areas. The most...
Scope: ASTM D4878 test is appropriate in research work or quality control specifications testing. The viscosity of a fluid is defined as its resistance to a uniformly continuous flow without turbulence or other influences. Procedure In ASTM D4878, enough sample is first placed in the smallest container to cover the immersion mark on the viscometer...
Scope: ASTM D4877 test technique can be used to characterize isocyanates used in polyurethane goods for research or quality control. The findings of this test technique for toluene diisocyanate can be used to determine reactivity or efficiency in polyurethane systems. It can only be used with materials whose color-producing bodies have light-absorption properties like the...
Scope: ASTM D4671 test method can be used for quality assurance, specification testing, and research. In polypropylene oxides, side reactions that yield unsaturated chemicals produce modest polymers with only one hydroxyl group per chain. Functionality and molecular weight of unsaturated polymers are reduced, while the overall molecular weight distribution is increased. Procedure: In ASTM D4671...
Scope: ASTM D4875 is used to measure Polymerized Ethylene Oxide (EO) Content of Polyether Polyols. In the test method, measurements of EO content are connected to polyol reactivity (as a function of primary hydroxyl content), foam rise linearity, and polyol and final product hydrophilicity. Procedure ASTM D4875 Standard Test Methods of Polyurethane Raw Materials: Polymerized...
Scope: ASTM D4672 test method is appropriate for quality assurance, specification testing, organic compounds, and research. Because isocyanates react with water, a polyol’s water content is critical. The Efficiency of this test is quite high. Procedure: For ASTM D4672 test method, an auto titrators operating manual is useful. The sample is inserted after the reagent...
Scope: ASTM D8036-16 is useful to determine the dimer ratio of Pure MDI; this test method can be utilized for research or quality control. It applies to monomeric methylene-di(phenyl isocyanate), often known as “Pure MDI,” which contains 95 percent or more methylene-4,4′-diisocyanate (phenyl isocyanate). Procedure: This method, ASTM D8036-16, involves scanning an open-path background to...
Scope: ASTM E824-10 is highly significant for the calibration of field radiometers employing standard reference radiometers. It is also useful for cosine and azimuth correction analyses. Traceability shall have been established if a parent instrument in the calibration chain participated in an international Pyrheliometric Comparison (IPC) was conducted at the World Radiation Center (WRC) in...
Scope: ASTM E816-05 test method covers the calibration of pyrheliometers by comparison to reference pyrheliometers. It uses only sunshine to apply calibration procedures. The measurements obtained from this method are utilized in quality control, safety assurance, performance evaluation, and research purposes. The specifications and working capabilities of the materials can be determined. This helps specify...
