Buying imidazoline well means knowing which specifications matter, what a complete COA contains, and how to source a custom structure when catalog grades do not fit. This purchasing guide covers both, with the practical details buyers should request.
1. Key Specifications to Specify
| Parameter | What it tells you |
|---|---|
| Acid value (mg KOH/g) | Residual free fatty acid; low for well-cyclized imidazoline |
| Amine value | Active imidazoline/amine content |
| Solid content (%) | Actives vs solvent |
| Appearance | Visual QC (liquid/paste, colour) |
| Flash point | Solvent safety and handling |
| Density | Dosing calculations and transport |
For corrosion-inhibitor grades, request film/inhibition test data at your target dosage in addition to the COA numbers.
2. What a Complete COA Should Include
- Product name and CAS (or reaction-product description), batch number and date.
- Measured acid value, amine value, solid content.
- Appearance, density, flash point.
- Grade declaration and test methods.
- For salts: degree of neutralization and pH of 1% solution.
3. Packaging and Storage
- Standard packaging: 200 kg steel drums or 1000 kg IBC totes; smaller custom pack sizes for trial orders.
- Store sealed, cool and dry; imidazolines are alkaline and moisture-sensitive in open containers (ring hydrolysis at high temperature).
- Check flash point before heating; keep away from strong oxidizers.
4. Ordering a Custom Imidazoline
The imidazoline family is defined by two variable parts – the fatty chain (2-position) and the amine head (1-position), plus salt/quaternary form. If your system needs a non-standard combination, specify:
- Target structure or performance (chain length, head group, salt/quaternary form).
- Application and service conditions (temperature, CO2/H2S, water cut, dosage).
- Sample quantities for evaluation (typically kg scale for testing).
- Acceptance criteria (acid/amine value, inhibition efficiency, appearance).
Because the main-chain and substituent structures vary widely, most non-standard requests are made-to-order. The products below are sample pages for reference; any other specific imidazoline product can be custom-made to your specification – Imidazoline Oleate (CAS 68310-76-9) and 2-(Heptadecenyl)-4,5-dihydro-1H-imidazole-1-ethylamine (CAS 25749-86-4). Please contact our team with your specification.
5. FAQ
What is the minimum order quantity for imidazoline?
For catalog grades, standard drum quantities; for custom structures, evaluation batches start at kilogram scale – contact us for details.
Can I get a sample before ordering?
Yes – samples for evaluation are available; for custom structures, we first confirm the target structure and acceptance criteria.
How do I check imidazoline quality on arrival?
Verify appearance, acid value and amine value against the COA, and run your application test at the planned dosage.
6. References and Further Reading
- Industry standard test methods for acid/amine values of fatty derivatives.
- Supplier COA and MSDS for the specific grades quoted.
This article is published for industrial and technical reference by PolyblueChem. Verify against the supplier’s COA and applicable standards.
See our imidazoline chemistry and applications guide and the oilfield inhibitor guide. PolyblueChem supplies imidazoline grades and custom structures – contact us for specifications and quotations.