Astm D2074 Pdf -

Prepare a second and third aliquot of the sample solution.Add salicylaldehyde to one aliquot to block primary amine reactions.Add acetic anhydride to the other to block primary/secondary reactions.Titrate each treated sample to isolate secondary and tertiary values. 4. Calculation

: Once the total, primary, and secondary amine values are known, the tertiary amine value is easily determined by subtraction: Total Amine Value - (Primary Amine Value + Secondary Amine Value).

: A separate sample is treated with salicylaldehyde or PITC, which reacts specifically with primary amines to form a derivative that is no longer titratable. The remaining basic species (secondary and tertiary amines) are then titrated with HCl. The difference between the total amine value and this value gives the primary amine content. astm d2074 pdf

The chemical manufacturing and quality control sectors rely heavily on standardized testing to ensure the purity, consistency, and performance of raw materials. In the surfactant and oleochemical industries, fatty amines serve as critical building blocks for surfactants, corrosion inhibitors, fabric softeners, and asphalt emulsifiers.

ASTM D2074 was an internationally recognized standard developed by ASTM International. Its full title was: This standard provided a chemical titration procedure to measure the concentration of different types of amines in fatty amines—a class of organic compounds widely used in industrial and consumer products, from fabric softeners to asphalt additives. Prepare a second and third aliquot of the sample solution

Because the standard has been withdrawn, obtaining a legitimate PDF is more difficult than for active standards. Here are the options:

: This standard utilizes a titration process with a color indicator to identify the endpoint, providing a less expensive or more accessible alternative to potentiometric titration (often found in ASTM D2073). Applications : A separate sample is treated with salicylaldehyde

Although the standard is withdrawn, understanding its analytical procedure is important for those who need to maintain legacy test methods or compare results with historical data.

| Standard | Title | Status | Similarity to D2074 | |----------|-------|--------|---------------------| | | Standard Test Methods for Total, Primary, Secondary, and Tertiary Amine Values of Fatty Amines by Referee Test Method | Active | Most closely related; also covers fatty amines | | ASTM D2074 | Test Methods by Alternative Indicator Method | Withdrawn | Original standard | | ISO 9702 | Plastics – Amine epoxide hardeners – Determination of primary, secondary and tertiary amine nitrogen content | Active | Similar principle, different scope (epoxy hardeners) | | ASTM D1193 | Specification for Reagent Water | Active | Referenced in D2074 for water purity |

provides a standardized, analytical pathway to determine the amine values within these chemical compounds. Specifically, it outlines alternative indicator methods to accurately measure four distinct metrics: Total Amine Value Primary Amine Value Secondary Amine Value Tertiary Amine Value