CAS 1305-62-0
Calcium Hydroxide Powder
CAS 1305-62-0Ca(OH)274.1 g/mol
Calcium Hydroxide, commonly known as slaked lime or hydrated lime, is used extensively in water treatment to adjust pH, soften water, and precipitate impurities. This industrial-grade product offers a purity of ≥90% and appears as a white, fine powder. Its versatility extends to construction, sugar refining, and chemical manufacturing, making it indispensable in various industries across Kenya and East Africa. Packed in 25 kg bags, it’s ideal for bulk applications and efficient logistics.
Main applicationWater treatment — pH adjustment and impurity precipitation
In industries where pH control and acidity neutralization are critical, Calcium Hydroxide plays a crucial role. It's a cornerstone in water treatment, construction, and agricultural applications, supporting sustainable practices and enhancing process efficiencies across sectors. Its wide usage in East Africa underlines its significance in regional industrial growth and environmental management.
Also known as
- Slaked Lime
- Hydrated Lime

Trade pricing
Quoted per enquiry
Pricing depends on volume, grade and delivery point. Our desk responds within two working hours.
Available packaging
- Supplied in 25 kg bags suitable for industrial use.
Documentation
Batch-specific COA issued with every consignment.
Technical specifications
- CAS number
- 1305-62-0
- Chemical formula
- Ca(OH)2
- Molecular weight
- 74.1 g/mol
- Grade
- Industrial grade
- Appearance
- White, fine powder
- UN number
- UN 3262
- Concentration
- ≥90% Ca(OH)2
Calcium Hydroxide (Ca(OH)2) is a fine white powder renowned for its alkalinity and reactivity. For water treatment, its intrinsic ability to neutralize acidity makes it crucial for pH adjustment and impurity precipitation. In construction, it acts as a vital ingredient in mortar, plaster, and for soil stabilization, contributing to building integrity. Selecting the correct grade is essential; this product typically provides ≥90% purity, suitable for industrial applications. The powdered form allows for rapid solubility and ease of handling, crucial for large-scale processes. Buyers should specify purity requirements and confirm packaging needs upon ordering, ensuring alignment with the process demands.
Delivery
Calcium Hydroxide Powder 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 impurity precipitation
- Construction — mortar and soil stabilization enhancement
- Sugar refining — clarification via milk of lime process
- Leather tanning — involved in dehairing and deliming
- Chemical manufacturing — intermediate for calcium hypochlorite
- Agriculture — soil pH correction and nutrient availability improvement
- Flue-gas desulfurization — reduces sulfur emissions
- Effluent treatment — neutralization of acidic waste
- Paper and pulp — refining and bleaching processes
Industries we supply this to
Why buy this from Sparks
- High reactivity allows efficient pH control in water treatment
- Finely powdered for quick solubility and wide distribution
- Packaging supports bulk shipping and ease of handling
- Purity aligns with industrial demands for consistency and efficiency
- Versatile applications across multiple industries, improving operational efficiency
- Inclusion in construction materials enhances structural durability
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
GHS classification: Skin Corr. 1C; Skin Irrit. 2; Eye Dam. 1; STOT SE 3
- H314: Causes severe skin burns and eye damage
- H315: Causes skin irritation
- H318: Causes serious eye damage
- H335: May cause respiratory irritation
Always consult the full Safety Data Sheet before handling. Personnel must use appropriate PPE and follow local regulations for storage, transport and disposal.
Storage conditions
Store in a cool, dry location at ambient temperature (+2 °C to +30 °C); use storage appropriate for corrosive inorganic solids (storage class 10–13).
Frequently asked questions
What is the CAS number of Calcium Hydroxide Powder?
The CAS registry number for Calcium Hydroxide Powder is 1305-62-0. Its chemical formula is Ca(OH)2, with a molecular weight of 74.1 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 Powder?
Calcium Hydroxide Powder is also referred to as Slaked Lime and Hydrated Lime. 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 Powder is supplied?
Calcium Hydroxide Powder is supplied as Industrial 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 concentration is Calcium Hydroxide Powder supplied at?
Calcium Hydroxide Powder is supplied at a concentration of ≥90% Ca(OH)2. Concentration and assay are separate figures: the concentration describes the strength of the material as supplied, and the certificate of analysis issued for your consignment carries the measured values for that batch.
What does Calcium Hydroxide Powder look like?
Calcium Hydroxide Powder is described as white, fine 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 Powder used for?
Common applications include water treatment — pH adjustment and impurity precipitation, construction — mortar and soil stabilization enhancement, sugar refining — clarification via milk of lime process, leather tanning — involved in dehairing and deliming, chemical manufacturing — intermediate for calcium hypochlorite and agriculture — soil pH correction and nutrient availability improvement. 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 Powder?
Calcium Hydroxide Powder is supplied to the Water Treatment, Agriculture & Agrochemicals, Construction & Admixtures and Textile & Leather Tanning 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 Powder available in?
Supplied in 25 kg bags suitable for industrial use. Where a different pack size or bulk delivery is required, it is confirmed at quotation stage against availability rather than listed here as standard.
How should Calcium Hydroxide Powder be stored?
Store in a cool, dry location at ambient temperature (+2 °C to +30 °C); use storage appropriate for corrosive inorganic solids (storage class 10–13). This is general guidance only. The safety data sheet for the product supplied is the authoritative source for storage, handling and incompatibility requirements, and should be read before the material is received on site.
What is the HS code for Calcium Hydroxide Powder?
Calcium Hydroxide Powder is recorded against the EC number 215-137-3 and the HS customs code 252220. Quote this on customs and export paperwork; it is confirmed again on the commercial invoice for your specific consignment.
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.CALCIUM HYDROXIDE | Occupational Safety and Health Administrationosha.gov
- 2.Calcium Hydroxide,huberlab.ch
- 3.Connect with Verified Lime & HSN Code 252220 Buyers in Kenya | Volzavolza.com
- 4.Calcium Hydroxide | Ca(OH)2 | CID 6093208 - PubChempubchem.ncbi.nlm.nih.gov
- 5.Hydrated Lime (Calcium Hydroxide) – Nilkanth Brand in East Africa - Finstar Industrial Chemicalsfinstarindustrialchemicals.co.ke
- 6.2023 Technical Report - Handling - Calcium Hydroxideams.usda.gov
- 7.Neelchemneelchem.com
- 8.Calcium Hydroxide Powder Supplier in Kenya | Finstarfinstarindustrialchemicals.com
- 9.Calcium Hydroxide Supplier Kenya | Calcium Hydroxide MSDS & Specificat | Zenco Systems Ltd - Chemical Divisionzencochemicals.com
- 10.Chiromo Fertilizers Limited | LinkedInke.linkedin.com
- 11.#homalime #mazaoyetu #farming #agriculture #limestone #kenyalimestone #quarrying #soils #soilhealth #regenerative #regenerativefarming #fertlizer #supercalciumfertlizer #maintenence #arablefarming… | Homa Lime Co. Ltdlinkedin.com
- 12.Buyer looking for Hydrated Lime (Ca(OH)₂) and Quicklime (CaO) for Water Treatment - Buying lead, Buying Request by buyer, importer from Kenya. Dated: Sep 4, 2025 - Freshdifreshdi.com
- 13.Kenya Calcium Hydroxide Market (2022-2031) | Analysis & Trends6wresearch.com
- 14.Calcium Hydroxide Suppliers from Kenya - Volzavolza.com
- 15.4.5.2. Lime Production (2.A.2)unfccc.int
- 16.During the Kenya Fertilizer Roundtable in October 2018, one of the key priority areas identified by the stakeholders was soil acidity and liming. One great way to encourage the use of lime is through multi-stakeholder knowledge-sharing forums. To advance this, Kenya Markets Trust (KMT), through KeFEifdc.org
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Calcium Hydroxide
Calcium Hydroxide, also known as slaked lime, is a white powder commonly used in water treatment and construction. This chemical plays a vital role i…
- CAS
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- Formula
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Water Treatment