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Properties:
Colorless or white block or powder. In the air absorb carbon dioxide and water. The relative density of 320-3.38, melting point 2614 °C, boiling point 2850 °C. In water is generated with calcium hydroxide and give off a lot of heat, slightly soluble in water, soluble in acid. Corrosive. To eyes, respiratory system and skin irritation.
Use:
Analytics reagents, spectral analysis reagent, phosphor mechanism.auxiliary solvent, vegetable oil decoloring agents, gas analysis, used on carbon dioxide absorber. Lot reagents used in semiconductor production of denotation, and diffusion process.
Details:
Test item | Specification | |
Reagent grade | Pharmaceutical grade | |
Appearance | Conform | Conform |
Assay % | ≥98.0 | ≥97.0 |
Clarity test | Conform | Conform |
Acetic acid insoluble % | ≤0.05 | ≤0.1 |
The ignition lose heavy/% | 2 | 5 |
Chloride % | ≤0.003 | ≤0.01 |
Nitrate % | ≤0.004 | ≤0.01 |
Sulfate % | ≤0.1 | ≤0.25 |
Ferric % | ≤0.015 | ≤0.03 |
Alkali metal % | ≤0.5 | ≤1.0 |
Ammonia water precipitate% | ≤0.2 | ≤0.4 |
AR 99.8% Calcium oxide reagent grade