Calcium Oxide 96.1% High Reactivity Lump


SKU: GPC8867 Categories: , ,

Calcium oxide (CaO), commonly known as quicklime or burnt lime, is a widely used chemical compound. It is a white, caustic, alkaline, crystalline solid at room temperature. The broadly used term “lime” connotes calcium-containing inorganic materials, in which carbonates, oxides and hydroxides of calcium, silicon, magnesium, aluminium, and iron predominate. By contrast, quicklime specifically applies to the single chemical compound calcium oxide. Calcium oxide that survives processing without reacting in building products such as cement is called free lime.

  • In B.O.S. (basic oxygen steelmaking) process
  • In production of aerated concrete blocks
  • In making of cement
  • In paper industry
  • In mining industry

Minimum Assay: >96.1%
Molecualr Formula: CaO
Molecular Weight: 56.08
Calcium Carbonate: <1.34%
Magnesium Oxide: <0.50%
Iron Oxide: <0.06%
Aluminium Oxide: <0.10%
Silicon Dioxide: <0.90%
Arsenic (As): <1.5ppm
Carbon Dioxide: <0.80%
Fluorine (F): <77ppm
lead (Pb): <3.1ppm
Manganese (Mn): <192ppm
Loss on ignition: <1.20%
Moisture: <0.40%
Sulphur (S): <0.025%

% passing 22.4mm: 100%
% passing 16mm: 99.0%
% passing 6.3mm: 13.0%
% passing 2.0m: 1%

BS6463 Reactivity (2 min): 68.0°C
BS6463 Reactivity (5 min): 69.0°C 

Hazard Class: 8

Hazard Phrases: Causes skin irritation. Causes serious eye damage. May cause respiratory irritation.

Prec Phrases: Avoid breathing dust/fume/gas/mist/vapours/spray. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing. Store locked up.


Cas No: 1305-78-8
Einecs No: 215-138-9

HS CODE: 2825901900


Following the UK’s departure from the EU on 1 January 2021, all European shipments are sent on a DAP Basis (Delivered at Place).

This means that the buyer will be liable for import VAT at their prevailing national rate and for orders over 150€ (including carriage) import duties will become chargeable at your prevailing national rate.

The Duty is ascertained by your national customs authority based on the HS Code of each product. The HS Code is shown in the “European Shipment” section of each product page.

Additional information

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250gm, 500gm, 1Kg, 2.5Kg, 5Kg, 25Kg