Category ASTM Standards

📐 Test Method Overview and Scope ASTM D4424-09 (Reapproved 2014) specifies the gas chromatographic analysis of commercial butylenes, butylene concentrates, and butane-butylene mixtures. It covers components at concentrations of 0.05% or greater, including propane, propylene, isobutane, n-butane, butene-1, isobutene, trans-butene-2,…

ASTM D4425-24, officially designated as the Standard Test Method for Oil Separation from Lubricating Grease by Centrifuging (Koppers Method), provides a standardized procedure for evaluating the tendency of lubricating grease to separate oil when subjected to high centrifugal forces. This…

🔬 Scope and Significance of D4423-23 The ASTM D4423-23 standard specifies a volumetric titration method for the determination of total carbonyls, comprising ketones and aldehydes, in C4 hydrocarbons. While the method was validated using polymerization-grade 1,3-butadiene, its applicability extends to…

ASTM D4422-19 specifies the standardized gravimetric test method for determining the ash content of petroleum coke. This analysis is fundamental for evaluating coke quality, as the ash content directly indicates the amount of undesirable non-combustible residue present in the material.…

ASTM D4420 – 94 (Reapproved 1999) defines a robust gas chromatographic methodology for quantifying aromatic hydrocarbons in finished motor gasoline. The standard provides validated procedures for determining benzene, toluene, C8 aromatics, C9 and heavier aromatics, and total aromatics, yielding essential…

The ASTM D4421–94 (Reapproved 1999) standard, formally designated as an American National Standard, provides a definitive, empirical test method for determining the volatile matter produced by pyrolysis in petroleum coke. This critical parameter is used to estimate the calorific value…

📜 Scope and Foundational Definitions ASTM D4418-22 covers the receipt, storage, and handling of fuels for gas turbines, except for those used in aircraft. This practice provides guidance for controlling substances that could cause deterioration of the fuel system or…

🔬 Principles and Applicability of D4419-90 ASTM D4419-90 (Reapproved 2021) establishes a standardized procedure for determining the transition temperatures of petroleum waxes, including microcrystalline waxes, using Differential Scanning Calorimetry (DSC). The test method specifically measures solid-solid and solid-liquid phase transitions…

🔬 Scope and Applicability of ASTM D4417-21 ASTM D4417-21 describes standardized techniques for measuring the surface profile of abrasive blast cleaned steel in field, shop, and laboratory environments. While the primary focus is on blast cleaning, the standard explicitly extends…

📐 Test Method Summaries and Scope ASTM D4415-05 outlines two distinct methods for quantifying dimer (acrylic acid dimer, CH2=CH-COO-CH2-CH2-COOH) in acrylic acid. Method A is a chemical titrametric procedure that may be extended to other unsaturated organic acids. Method B…

📋 Specification Scope and General Requirements ASTM D4416‑09 (Reapproved 2023) establishes the standard specification for glacial acrylic acid (propenoic acid, vinyl formic acid) of 99.0 % grade. This standard is intended for materials used in paints, varnishes, lacquers, and related coating…

🧪 Overview and Scope of the Charcoal Tube Methodology ASTM D4413-98 (Reapproved 2009) describes the determination of ethylene oxide (oxirane) in workplace atmospheres using charcoal tube methodology. This method is widely used for evaluating exposure to this major industrial chemical,…