Astm: D2074 Pdf
The ASTM D2074 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
Purpose: To measure amine values, which represent the milligrams of potassium hydroxide (KOH) equivalent to the amine basicity in 1 gram of sample.
Scope: Covers fatty amines but is not applicable to fatty amidoamines or fatty diamines.
Methodology: Uses strong acid/weak base titration with specific indicators like bromphenol blue and bromcresol green. Current Status: The active version is ASTM D2074-07(2019). Where to Find the Standard
Official PDF copies must be purchased through authorized distributors due to copyright and Digital Rights Management (DRM) policies that often restrict printing or sharing.
ASTM D2074-07(2019) outlines the Alternative Indicator Method for determining total, primary, secondary, and tertiary amine values in fatty amines, specifically excluding amidoamines and diamines. The procedure utilizes specific chemical indicators, such as bromphenol blue, to measure amine basicity through titration. Purchase the full standard on the ASTM International ASTM International astm d2074 pdf
ASTM D2074 is a standard test method specifically designed to determine the amine values of fatty amines. It provides a chemical analysis procedure to quantify the total, primary, secondary, and tertiary amine content using an alternative indicator method. Scope and Application
Target Materials: The method is applicable to materials containing fatty primary amines, difatty secondary amines, and trifatty tertiary amines.
Exclusions: It is generally not applicable to fatty amidoamines or fatty diamines.
Industry Use: These tests are vital for quality control in the production of polymers, resins, and paints, as amine values influence the reactivity and curing of these materials. Testing Methodology
The method relies on a titration procedure where a sample is reacted with specific reagents to identify different amine levels: The ASTM D2074 standard provides test methods for
Total Amine Value: Calculated from the amount of acid required to neutralize all basicity in 1 gram of the sample.
Key Reagents: Common chemicals used include Isopropyl alcohol, Chloroform, and standard hydrochloric acid (0.1 N).
Indicators: Bromphenol blue or Bromcresol green are typically used as visual indicators to determine the endpoint of the titration. Available Formats and Access
The Chemist’s Guide to ASTM D2074: Precision in Fatty Amine Analysis
In the world of industrial chemistry, fatty amines are the unsung heroes powering everything from the soft feel of your hair conditioner to the corrosion-resistant coatings on oil rigs. But because these molecules can exist as primary, secondary, or tertiary amines—each with vastly different reactive properties—precision is non-negotiable. Scope: Measures the resistance of oils to oxidation
That’s where ASTM D2074 comes in. Known formally as the Standard Test Methods for Total, Primary, Secondary, and Tertiary Amine Values of Fatty Amines by Alternative Indicator Method, this standard provides a critical chemical "fingerprint" for these vital compounds. What Exactly is ASTM D2074?
ASTM D2074 is a standardized procedure used to determine the amine value—defined as the number of milligrams of potassium hydroxide (KOH) equivalent to the basicity in one gram of a sample.
Unlike its more complex cousin, ASTM D2073, which uses a "referee" potentiometric method (measuring voltage), ASTM D2074 is an "alternative indicator" method. It relies on color-changing chemical indicators to signal the completion of a reaction, making it a staple for rapid quality control in analytical laboratories. Key Limitations:
2. Scope and Purpose
- Scope: Measures the resistance of oils to oxidation when subjected to elevated temperature and oxygen under controlled conditions.
- Purpose: Provide comparative data for formulation optimization, additive evaluation, and shelf-life forecasting.
Appendix A — Example Procedure (concise)
- Condition 100 g of oil sample at 25 °C; filter to 0.45 µm.
- Place in stainless-steel reaction vessel; set oven to 120 °C.
- Flow oxygen at 100 mL/min for 72 hours.
- Sample every 12 hours: measure kinematic viscosity at 40 °C, total acid number (TAN), and filter for insolubles.
- Record time when ΔTAN ≥ 2 mg KOH/g or viscosity increases by 20% as failure.
Option 1: Official ASTM Compass (Paid)
The only legal and reliable source for the official ASTM D2074 PDF is the ASTM Compass platform (compass.astm.org). As of the latest pricing, a single PDF download costs between $50 and $70 USD for non-members. Members receive a discount.
- Advantages: You receive an unaltered, watermarked, and fully searchable PDF that is legally admissible in audits. The document includes all tables, charts, and precision statements.
