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Calcium Hydroxide 95%

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Price: £4.45

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Stock Availability

On Shelf - Approx. UK delivery date: Wednesday the 09th April 2025*

In bulk stock - ships within 4 - 8 Days (Excluding weekends and public holidays)

4 - 6 Weeks Approx.

UK Shipping

We can only ship to Northern Ireland where a Royal Mail postal option has been chosen at checkout.

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

Applications

A flocculant, in water and sewage treatment and improvement of acid soils
An ingredient in whitewash, mortar, and plaster
An alkali used as a lye substitute in no-lye hair relaxers
For reef aquarium hobby for adding bio-available calcium in solution for calcium-using animals such as algae, snails, hard tube worms, and corals (often referred to as Kalkwasser mix), and also to increase the alkalinity of the water

General

Calcium hydroxide, traditionally called slaked lime, is an inorganic compound with the chemical formula Ca(OH)2. It is a colourless crystal or white powder and is obtained when calcium oxide (called lime or quicklime) is mixed, or "slaked" with water. It has many names including Reef Kalkwasser, hydrated lime, builders lime, slack lime, cal, or pickling lime. It is of low toxicity and finds many applications.

Specification

Molecular Formula: Ca(OH)2
Molecular Weight: 74.09 g/mol
Melting Point: 550°C
Density at 25°C (g/cm3): 2.24
pH (saturated soln 20°C): 12.6
Calcium Hydroxide (Ca(OH)2): >95%
Calcium Carbonate (CaCO3): >0.55%
Magnesium Oxide (MgO:) <0.23%
Iron Oxide (Fe2O3): <0.03%
Aluminium Oxide (Al2O3): <0.04%
Silica (SiO2): <0.36%
Manganese (Mn)
Sulphur (S): <0.01%
Free Moisture: 0.53%
Available Lime (as Ca(OH)2): >95%
Neutralisation: 74.46%

Hazards

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

Prec Phrases: Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

corrosive CLP Image Harmful CLP Image

Cas No: 1305-62-0

Einecs No: 215-137-3

FP: Not Flammable

Product Reviews

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“Item as described, prompt delivery.”

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“Very efficient service”

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“Good product. Arrived on time. I used it with corn and my tortillas turned out well!”

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“Good source of essential chemicals”

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“Arrived on time. I have to assume that the contents are what they say they are. Certainly when I mixed it with copper sulphate & sprayed my nectarine bush it had the desired effect. Package came with health warnings.”

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“As advertised”

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“Perfect”

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“very good service thank you”

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“No impurities. Great product”

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“My order arrived extremely quickly. Great service”

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“Good product”

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“great service, thanks”

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“good value product fast delivery”

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“Arrived on time and well packaged. A pleasure to deal with Source Chemicals.”

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“Exactly right. Thank you.”

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“This was the bulk order I placed. Delivery was ahead of schedule by weeks! Product is sound. Used in both, alchemy of indigo turning plant material into pigment and for Organic 1,2,3, indigo vat recipe. Results are good. Highly recommend. Thank you!”

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“Using this in a textile paste. Nicely packaged so shouldn't go off too quickly”

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“Great”

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“Excellent service.”

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“Item arrived promptly and exactly as I ordered, thanks”

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“1st class service”

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“All good thanks”

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“Vg service”

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“Calcium Hydroxide (pickling Lime) arrived in very good condition, promptly and fully met ,y expectations”

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“arrived on time as described”

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“Excellent seller - item as described”

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“Arrived very quickly, ahead of ETA. Well packaged.”

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“arrived quickly and as described”

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“Hand delivered . Just right for a serious oxidant.”
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“Arrived by apc carrier. Item as described and recieved follow up email for tracking details”
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“I have been using surgical spirit for years but recently it's very hard to get hold of. Luckily Amazon sell this so ordered some just to keep back. It can be used for a number of things so handy to have a bottle in. It's only a small bottle but you don't need much.”
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“Delivered promptly, well packaged and exactly as described. Both packages weighed more than the amount shown on their label.”
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“Thankyou”
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“As described”
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“Good product. Arrived on time. I used it with corn and my tortillas turned out well!”
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“top seller, recommend to anyone”
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“Item as described and arrived promptly”
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“would buy from again if needed”
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“prompt service,no problems”
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“Great service”

Code	Pack	Price
CALHYD-100G-FOIL	100g	£4.45
CALHYD-250G-FOIL	250g	£8.45
CALHYD-2X250G-FOIL	2 x 250g	£12.95
CALHYD-500G-FOIL	500g	£9.95
CALHYD-2X500G-FOIL	2 x 500g	£16.95
CALHYD-1KG	1Kg	£14.95
CALHYD-2X1KG	2 x 1Kg	£26.95
CALHYD-2.5KG	2.5Kg	£24.95
CALHYD-5KG	5Kg	£43.95
SCCALHYD-2X5KG	2 x 5Kg	£86.95
CALHYD-10KG	10Kg	£84.95
CALHYD-25KG	25Kg	£109.95

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Calcium Hydroxide 95%

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