CAS 1305-62-0
Calcium Hydroxide
CAS 1305-62-0CaH2O274.09 g/mol
Calcium Hydroxide, also known as slaked lime, is a white powder commonly used in water treatment and construction. This chemical plays a vital role in adjusting pH levels, enhancing water quality, and as a key ingredient in mortar and plaster. With its strong alkalinity and unique properties, it is favored across industries such as agriculture for soil treatment, and food processing for clarification of juices and drinks.
Main applicationWater treatment — pH adjustment and alkalinity correction
Calcium Hydroxide is significant for industries requiring effective pH regulation, as it enhances water treatment processes and aids agricultural productivity. Its versatility in construction also makes it a valuable ingredient for building materials, impacting the quality and durability of structures.
Also known as
- CALCIUM HYDROXIDE
- Slaked lime
- Hydrated lime
- Lime hydrate
- Calcium hydrate
- Lime water
- Calcium hydroxide (Ca(OH)2)
- Hydralime

Trade pricing
Quoted per enquiry
Pricing depends on volume, grade and delivery point. Our desk responds within two working hours.
Available packaging
- Available in 25 kg bags
Documentation
Batch-specific COA issued with every consignment.
Technical specifications
- CAS number
- 1305-62-0
- Chemical formula
- CaH2O2
- Molecular weight
- 74.09 g/mol
- Grade
- Technical grade
- Appearance
- White powder
- Density
- 2.24 g/cm³
- Density
- 2.24 g/cm³
- Melting Point
- 1076 °F
- Solubility
- 0.2 %
- pH
- 12.4 -
Calcium Hydroxide (Ca(OH)2) is a compound with a molecular weight of 74.09 g/mol. It exhibits a density of approximately 2.2 g/cm³ and has a high melting point of 1076 °F, decomposing upon heating. In its powdered form, it is slightly soluble in water at a rate of 0.2% at 32 °F. Buyers should specify this grade when ordering to ensure appropriate application. The alkalinity of solutions made from this compound typically results in a pH of about 12.4 when saturated at 25 °C.
Delivery
Calcium Hydroxide is dispatched from our Nairobi warehouse across Kenya, and export delivery is arranged to the wider East African market. Lead time depends on quantity and grade and is confirmed with your quotation — see delivery and collection for the towns we reach and how dispatch works.
Applications & uses
- Water treatment — pH adjustment and alkalinity correction
- Soil conditioning — enhancing soil pH and nutrient availability
- Food processing — clarifying juices and beverages
- Construction — used in mortar and plaster formulations
- Metal treatment — aiding in metal processing and descaling
Industries we supply this to
Why buy this from Sparks
- Effective in pH control for drinking water
- Improves soil quality for agricultural applications
- Aids in food clarity, enhancing product quality
- Forms strong bonding when used in construction materials
- Helps remove impurities during metal treatment processes
Quality assurance
- Batches are checked against the specification values listed above before dispatch.
State what your process, auditor or customs clearance requires when you request a quotation, and it is confirmed with the quote.
Safety, handling & storage
Always consult the full Safety Data Sheet before handling. Personnel must use appropriate PPE and follow local regulations for storage, transport and disposal.
Frequently asked questions
What is the CAS number of Calcium Hydroxide?
The CAS registry number for Calcium Hydroxide is 1305-62-0. Its chemical formula is CaH2O2, with a molecular weight of 74.09 g/mol. Quote this number when requesting a quotation or checking documentation, as it identifies the substance unambiguously regardless of the trade name used.
What are the other names for Calcium Hydroxide?
Calcium Hydroxide is also referred to as CALCIUM HYDROXIDE, Slaked lime, Hydrated lime, Lime hydrate, Calcium hydrate and Lime water. These names describe the same substance, so a specification or enquiry written against any of them can be matched to this product.
What grade of Calcium Hydroxide is supplied?
Calcium Hydroxide is supplied as Technical grade. State the grade your process requires when requesting a quotation — where an alternative grade can be sourced, it is confirmed at quotation stage rather than assumed.
What does Calcium Hydroxide look like?
Calcium Hydroxide is described as white powder. Appearance is a useful first check on receipt of goods, though it does not replace the certificate of analysis for confirming that the material meets specification.
What is Calcium Hydroxide used for?
Common applications include water treatment — pH adjustment and alkalinity correction, soil conditioning — enhancing soil pH and nutrient availability, food processing — clarifying juices and beverages, construction — used in mortar and plaster formulations and metal treatment — aiding in metal processing and descaling. The suitability of the product for a particular process depends on the grade and specification required, which is worth confirming against your own process conditions.
Which industries use Calcium Hydroxide?
Calcium Hydroxide is supplied to the Water Treatment, Food Processing & Beverage, Agriculture & Agrochemicals, Construction & Admixtures and Cleaning & Detergents sectors. These are the industries this product is listed against in our catalogue; if your application falls outside them, we can advise on suitability before you order.
What packaging is Calcium Hydroxide available in?
Available in 25 kg bags. Where a different pack size or bulk delivery is required, it is confirmed at quotation stage against availability rather than listed here as standard.
Related to Calcium Hydroxide
Where this product sits in the catalogue, and the sectors that use it.
References
Technical information on this page was compiled from the following published sources. Safety and handling data always comes from the supplier’s own safety data sheet.
- 1.PubChem CID 6093208pubchem.ncbi.nlm.nih.gov
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