Description
Specifications Table
Product Name – Calcium oxide, Puratronic™, 99.998% (metals basis, excluding other alkaline earth and alkali metals 130ppm max)
Quantity/Pack Size – 250g, 50g, 10g, 2g
Form – Powder
Grade – Puratronic™ (99.998%)
Application – High-precision synthesis, analytical chemistry, and trace metal-sensitive processes
Product Overview
This Puratronic™ grade calcium oxide (CaO) delivers exceptional purity at 99.998% (metals basis), with a maximum of 130ppm combined alkaline earth and alkali metal impurities. Engineered for applications demanding ultra-low trace metal contamination, this high-reactivity powder maintains consistent performance in critical environments. The material undergoes rigorous purification processes to eliminate metallic and anionic contaminants, ensuring reliable results in sensitive analytical techniques. Its fine particle size distribution enhances solubility and reaction kinetics, while the tightly controlled manufacturing process guarantees batch-to-batch reproducibility. The product’s hygroscopic nature requires careful handling to prevent moisture absorption, which could compromise its high-purity profile. Packaged under inert conditions to preserve integrity, this calcium oxide is particularly suited for advanced research applications where metallic impurities could interfere with experimental outcomes or final product quality.
FAQs
1. What is the significance of the 130ppm maximum limit for alkaline earth and alkali metals?
The 130ppm specification ensures minimal interference from common metallic contaminants like sodium, potassium, magnesium, or calcium itself, which is critical for applications sensitive to these elements. This low threshold distinguishes Puratronic™ grade from standard calcium oxide products.
2. How does this calcium oxide compare to reagent-grade or technical-grade alternatives?
Puratronic™ grade offers significantly lower metallic impurities (99.998% vs. typically 96-98% for reagent grade) and tighter control over trace elements. Technical grades may contain up to 5% impurities, making them unsuitable for precision applications where this product excels.
3. What precautions should be taken during storage to maintain its purity?
Store in a tightly sealed container under dry, inert gas (argon/nitrogen) to prevent moisture absorption and carbonation. Exposure to ambient air can form calcium hydroxide or carbonate, altering the material’s properties and reducing its effectiveness in sensitive applications.
4. Is this product compatible with standard laboratory glassware?
While chemically compatible, the highly reactive nature of ultra-pure calcium oxide may etch soda-lime glass over prolonged contact. For long-term storage or reactions, consider using borosilicate glass or PTFE-lined containers to prevent potential contamination from glass components.
5. What analytical techniques are used to verify the 99.998% purity specification?
The purity is confirmed through inductively coupled plasma mass spectrometry (ICP-MS) for metallic impurities, combined with ion chromatography for anionic contaminants. These techniques provide parts-per-billion detection limits necessary to validate the Puratronic™ grade specification.
