Description
Specifications Table
Product Name – Iodine, resublimed crystals, Puratronic™, 99.9985% (metals basis)
Quantity/Pack Size – 100g, 25g, 2.5g
Form – Crystalline solid (resublimed)
Grade – Puratronic™ (99.9985% metals basis)
Application – Trace analysis, semiconductor doping, high-precision synthesis
Product Overview
This Puratronic™ grade iodine represents the pinnacle of elemental purity, with a certified 99.9985% metals basis assurance that eliminates interference from trace metallic contaminants. The resublimation process produces uniform, high-density crystals with minimal moisture content and exceptional stability, making it ideal for applications where even ppb-level impurities can compromise results. Unlike standard reagent-grade iodine, this material undergoes rigorous multi-stage purification to remove volatile organic compounds and residual solvents, ensuring consistent performance in mass spectrometry, doping processes, and as a precursor for ultra-pure iodine derivatives. The crystalline structure’s uniformity provides predictable dissolution rates and reaction kinetics, while the ultra-low halogen and sulfur content prevents unwanted side reactions in sensitive systems. Packaged under inert conditions to prevent oxidation, each batch includes a comprehensive certificate of analysis detailing impurity profiles down to sub-ppm levels for critical elements like iron, copper, and lead. The material’s high sublimation point (113.7°C) and negligible vapor pressure at room temperature allow for precise handling in both open and closed systems.
FAQs
1. What distinguishes Puratronic™ iodine from standard ACS-grade iodine?
Puratronic™ iodine undergoes an additional resublimation step and is certified to 99.9985% purity on a metals basis, with individual metallic impurities controlled below 10 ppm, compared to ACS grade which typically allows up to 0.005% non-volatile residues and higher trace metal content.
2. Can this iodine be used directly in semiconductor manufacturing processes?
Yes, the ultra-low metal content (particularly for transition metals like Fe, Ni, and Cr) and absence of organic contaminants make it suitable for doping applications and as a precursor in CVD processes, though specific compatibility should be verified with your process parameters.
3. What is the typical shelf life when stored unopened?
When stored in its original packaging under cool, dry conditions (15-25°C) away from light and oxidizing agents, the product maintains its specified purity for at least 36 months from the date of manufacture, as evidenced by stability testing data.
4. Are there any special handling precautions for the crystalline form?
The resublimed crystals should be handled in a fume hood due to their volatility at room temperature; use PTFE or glass tools to avoid contamination, and store in amber glass containers with PTFE-lined caps to prevent moisture absorption and sublimation loss.
5. How does the resublimation process affect the crystal morphology?
The controlled resublimation produces larger, more uniform crystals with fewer lattice defects compared to standard purification methods, resulting in more consistent dissolution rates and reduced particulate generation during handling.
