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D2071-87 – Standard Test Method Technical Guide
📐 Scope and Covered Compounds
These test methods cover the testing of fatty nitrogen products. They were prepared jointly by ASTM and the American Oil Chemists’ Society. The compounds covered include:
- Fatty Amines: fatty primary amines, difatty secondary amines, and trifatty tertiary amines.
- Fatty Quaternary Ammonium Chlorides: trimethyl fatty quaternary ammonium chloride and dimethyl difatty quaternary ammonium chloride.
- Fatty Amidoamines: reaction products of fatty acids with an excess of polyamines.
- Fatty Diamines: N-fatty-1,3-propylene diamines.
This standard does not purport to address all safety concerns; users must establish appropriate practices.
⚙️ Test Method Selection and Implementation
The standard specifies the use of various ASTM methods for specific determinations. Sampling is performed per D 1466, color testing per D 1544 or D 1209, and water content per D 2072. The following table summarizes key test methods:
| 🟦 Test Method | 📏 Sections | 🎯 ASTM Designation |
|---|---|---|
| Sampling | 5 | D 1466 |
| Color by Gardner Method | 6 | D 1544 |
| Color by APHA Method | 7 | D 1209 |
| Water by Karl Fischer Method | 8 | D 2072 |
| Fatty Amines: Amine values | 9 | D 2073, D 2074 |
| Fatty Amines: Iodine value | 10 | D 2075 |
| Fatty Quaternary Ammonium Chlorides: Flash point | 15 | D 56, D 88, D 92, D 93, D 1310, D 3278 |
| Fatty Quaternary Ammonium Chlorides: Average molecular weight | 18 | D 2080 |
| Fatty Amidoamines: Amine values | 20 | D 2073 |
| Fatty Diamines: Iodine values | 23 | D 2075 |
💡 Note: The standard includes comprehensive test methods for each product category, ensuring consistent evaluation of fatty nitrogen compounds.
📊 Key Measured Properties
Critical properties include total, primary, secondary, and tertiary amine values determined by referee potentiometric method (D 2073) or alternative indicator method (D 2074). Iodine value is measured using D 2075 for fatty amines, amidoamines, and diamines. For quaternary ammonium chlorides, flash point, ash, and pH are additionally determined.
⚠️ Safety: The standard does not address all safety concerns. Users must establish appropriate safety and health practices and determine regulatory limitations prior to use.
❓ Frequently Asked Questions
🔍 What products are covered by these test methods? The test methods cover fatty amines, fatty quaternary ammonium chlorides, fatty amidoamines, and fatty diamines.
💡 How is water content determined in fatty nitrogen compounds? Water content is determined by the Karl Fischer method as specified in ASTM D 2072.
⚡ Which ASTM methods are specified for flash point testing of quaternary ammonium chlorides? Flash point testing is specified using methods such as D 56, D 88, D 92, D 93, D 1310, and D 3278.
📌 What is the significance of amine values in fatty amines? Amine values indicate the total, primary, secondary, and tertiary amine content, determined by methods D 2073 or D 2074.