Astm D2074 Pdf ((full)) «DIRECT × EDITION»
Both cover total, primary, secondary, and tertiary amine values of fatty amines. The key difference is in the titration technique: D2074 used an "alternative indicator method," whereas D2073 is the "referee test method" that typically uses a potentiometric (pH‑meter) titration. D2073 is generally considered more precise and is the current active standard.
The "Amine Value" represents the number of milligrams of potassium hydroxide (KOH) equivalent to the basicity of 1 gram of the sample. This measurement is critical for chemical manufacturers to ensure the purity and reactive potential of fatty amines used in surfactants, fabric softeners, and asphalt emulsifiers. Summary of Test Methods
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The standard provides test methods for determining the amine values of fatty amines using an alternative indicator method. 📄 Overview of ASTM D2074
: The American National Standards Institute offers the PDF for digital download. astm d2074 pdf
Why did this standard matter? Fatty amines are used in numerous industrial sectors:
Add the bromphenol blue indicator and titrate with standardized HClcap H cap C l until the color shifts sharply from blue to yellow.
The ASTM D2074 PDF is recommended for:
There is no legitimate free source. ASTM standards are copyrighted. If you find a website offering a free download, it is an unauthorized copy. The only way to legally obtain a copy is to purchase a historical PDF from ASTM International or an authorized reseller. Both cover total, primary, secondary, and tertiary amine
Standardized hydrochloric acid (HCl) or perchloric acid titration solutions.
The ASTM D2074 standard remains a foundational pillar for characterization in oleochemistry. By providing a clear, indicator-based pathway to separate total, primary, secondary, and tertiary amine values, it ensures that industrial formulations perform safely and predictably. For laboratories utilizing manual titration, keeping an official, current copy of the on hand is an indispensable requirement for daily quality control.
The current version of the standard is , which was reapproved in 2019. It defines the specific methods used to measure the basicity of fatty amines, expressed as the "amine value"—the number of milligrams of potassium hydroxide (KOH) equivalent to the amine basicity in one gram of sample. The standard focuses on four specific values: Total Amine Value : Total basicity of the sample.
By subtracting the individual values from the total amine value, technicians calculate the precise percentage of primary, secondary, and tertiary amines present. ASTM D2074 vs. ASTM D2073 The "Amine Value" represents the number of milligrams
If you are a student, researcher, or employee at a major corporation, your institution's library may already have an active subscription providing free access to the ASTM database. Summary for Lab Technicians
Hot plate or water bath for samples requiring mild heating to dissolve Limitations and Alternative Standards
Standard laboratory glassware, including burettes, Erlenmeyer flasks, and a heating source. 2. The General Testing Process The standard outlines a multi-step titration procedure:
The standard provides test methods for determining the total, primary, secondary, and tertiary amine values of fatty amines using an alternative indicator method . It is a critical reference for quality control and chemical analysis in industries working with organic nitrogen compounds. Core Details of ASTM D2074