ASTM D974
Standard Test Method for Acid and Base Number by Color-Indicator Titration
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About This Item
ASTM D974 is the standard test method for acid and base number by color-indicator titration, providing a consistent way to evaluate the acidic or basic character of a material. This test is commonly used when numerical acidity or basicity data are needed for quality control, product comparison, or condition monitoring. By defining a recognized titration approach, the standard helps support more reliable and comparable results across testing programs.
What is ASTM D974?
ASTM D974 is an ASTM standard that describes a color-indicator titration method for determining acid number and base number. In practical terms, it offers a controlled procedure for measuring the amount of acidic or basic constituents in a sample through titration endpoint detection. The standard is useful when laboratories need a repeatable method for assessing chemical properties that may affect performance, stability, or service suitability. As a technical document, it helps align test practice and reporting.
Where is ASTM D974 used?
This standard is commonly used in laboratory testing and quality control settings where acid number or base number measurements are part of routine evaluation. It may be applied to materials and formulations that require monitoring of acidity or alkalinity over time, especially where color-indicator titration is an appropriate test approach. ASTM D974 is also relevant in procurement and specification compliance workflows when buyers and suppliers need a shared method for comparison and acceptance.
Why is ASTM D974 important?
ASTM D974 matters because it helps create consistent, defensible results for acid and base number testing. A defined test method supports better comparison between laboratories, reduces ambiguity in reporting, and improves confidence in product evaluation. For organizations involved in testing, purchasing, or compliance, the standard can help streamline specifications and reduce risk tied to inconsistent analytical practices. It is especially valuable when the test result is used to track condition, verify quality, or support technical decisions.
- Color-indicator titration method
- Acid number determination
- Base number determination
- Laboratory quality control use
- Consistent reporting and comparison
- Publication Date: 2024-02-02
- Publisher: ASTM
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