Calcium Oxide 92% (Medium Reactivity Lump)

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Price: £6.95

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Stock Availability

On Shelf - Approx. UK delivery date: Wednesday the 17th September 2025*

In bulk stock - ships within 10 - 12 Working Days (Excluding weekends and public holidays)

4 to 6 weeks approx. (Not guaranteed)

UK Shipping

Unfortunately, we are not currently accepting orders for Northern Ireland.

We can only ship to the following postcodes where a Royal Mail postal option has been chosen at checkout.

AB, DD, DG3, DG4, DG6 - DG9, EH, FK, G, HS, IM, IV, KA, KW, KY, ML, PA, PH, PO30 - PO41, TD, TR21 - TR25, ZE

* We will always try to ship as early as possible. Delivery could be much quicker than stated but is not guaranteed

Specification
Hazards

Specification

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 deg C
BS6463 Reactivity (5 min): 69.0 deg C

Hazards

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.

corrosive CLP Image Harmful CLP Image