Calcium oxide (papules) 97.5% AR [1305-78-8] Calcium oxide can be used for the production of calcium carbide, soda ash, bleaching powder, used as building materials, fire resistance, desiccant and soil, and calcium fertilizer. Can be used as an analytical reagent and flux for producing fluorescent powder.
Boiling point: 2850 ° C (100 mbar)
Density: 3.37 g / cm3 (20 ° C)
Melting point: 2580 ° C
PH value: 12.6 (H₂O, 20 ° C) (saturated solution)
Bulk density: 800 – 1200 kg / m3
Solubility: 1.65 g / l Risk of violent reaction
Hydrochloric acid insoluble substances: ≤ 0.1%
Chloride (Cl): ≤ 500 ppm
Sulphate (SO₄): ≤ 5000 ppm
Heavy metals (as Pb): ≤ 50 ppm
Labeling of hazardous chemicals and mixtures that are part of the Globally Harmonized System of Classification and Labeling of Chemicals (GHS). The pictograms recommended by GHS have the shape of a square set on the top. They should contain a black symbol on a white background with a red border.
Priority rules to be observed in connection with the labeling of a substance:
– the skull and crossbones, the exclamation mark pictogram should not be added.
– corrosive effect, the exclamation mark pictogram should not be added if it concerns eye or skin irritation.
– health hazard determining respiratory sensitization, the exclamation mark pictogram should not be added if it concerns skin sensitization or irritation to eyes or skin.
Source: GHS pictograms