1-Vinylimidazole (CAS 1072-63-5) is a functional monomer increasingly used worldwide in high-performance resins, adhesives, electronic materials, and specialty polymers. Thanks to its excellent reactivity, high polarity, adhesion properties, and significant accelerating effect on epoxy curing, it is widely used in advanced coatings, composite materials, batteries, printed circuit boards, UV-curing resins, adhesives, and functional polymers.

However, products from different manufacturers exhibit significant variations: purity, color, inhibitor content, moisture content, and stability all influence the final material properties.Therefore, selecting a reliable supplier of high-purity 1-vinylimidazole has become a major challenge for procurement and R&D teams worldwide.Below, we address frequently asked questions in the industry to provide you with professional sourcing recommendations and market insights.

I. How to Choose High-Purity 1-Vinylimidazole for the Polymer and Epoxy Industry

1. Check Purity (≥ 99% or ≥ 99.5%)

Advanced applications (electronics chemicals, UV polymerization, pharmaceutical intermediates) typically require:

✔ Purity ≥ 99%

✔ Low APHA Content

✔ Moisture ≤ 0.1%

Higher purity allows for cleaner polymerization, which improves the color and stability of the finished product.

2. Check Inhibitor Content (MEHQ or Other)

1-Vinylimidazole has active groups and requires a small amount of inhibitor to prevent autopolymerization during storage.

Reputable suppliers indicate:

Type of inhibitor

Dosage (ppm)

Long-term stability data

This information is essential for epoxy and UV curing systems.

3. Reduced APHA for use with electronic-grade material

Advanced epoxy resins and electronic/electrical materials require:

✔ APHA ≤ 50 or less

✔ No perceptible odor

✔ No discoloration during prolonged storage

A low APHA ensures greater purity and fewer side effects.

4. Supply chain stability (global export capacity)

Choosing a manufacturer that ensures stable production and a continuous supply is crucial, especially for large paint, resin, and electronic materials plants.

Reputable suppliers will provide the following information:

Annual production capacity

Country of export

Packaging and shipping methods

Risk classification for sea/air transport (1-vinylimidazole is not hazardous)

Factory certifications (ISO, REACH, Certificate of Analysis, Technical Data Sheet, etc.)

5. Verify the professionalism and completeness of the Certificate of Analysis and Technical Data Sheet.

A professional manufacturer's Certificate of Analysis will include the following information:

Purity

Color

Moisture content

pH

Density

Inhibitor content

Appearance

GC spectrum (provided by reputable suppliers)

6. What should be the focus during sample testing?

Reaction speed with the epoxy system

Product transparency after curing

Curing acceleration effect

Volatile compounds and odor

Storage stability

Only products that have undergone cross-validation in the laboratory are recommended for bulk purchase.

II. Where can I buy stable, high-quality 1-vinylimidazole?

Important criteria for supplier selection:

1. Choose manufacturers with all the necessary export qualifications.

Check:

Is it an approved manufacturer of origin?

Does it have professional reactors and distillation lines?

Does it have experience in international export?

Does it provide REACH registration assistance (for exports to the EU)?

2. Verify the control and quality systems implemented by third-party organizations.

For example:

ISO 9001

SGS Testing

ROHS

REACH – Substances of Very High Concern (SVHC)

Secure Transport Documents (SDS)

3. Excellent suppliers must meet the following requirements:

✔ Purity ≥ 99%

✔ Low dye content

✔ Low moisture content

✔ Long-term stable supply

✔ Export packaging (25 kg, 200 kg, IBC)

✔ Official Certificate of Analysis (COA) and Technical Data Sheet (TDS)

✔ Samples available

If needed, I can also help you draft professional email templates for your purchase inquiries.