About Calcium Oxide (CAS 1305-78-8)
Calcium Oxide CaO is a highly sought-after chemical compound commonly known as quicklime or burnt lime. It is classified as a stable pure substance. DPRJ Universal stands as a leading Calcium Oxide manufacturer and bulk supplier in India, offering multiple grades of high-quality material backed by comprehensive COA and SDS technical support documentation.
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📩 Get Instant Quote ✉️ Email: [email protected]Technical Specifications
- Chemical Name: Calcium Oxide (Quicklime / Burnt Lime)
- Purity: 90% - 95% Active CaO (Minimum)
- CAS No.: 1305-78-8
- Appearance: Off-white to clean white powder or porous lumps
- Formula: CaO (Calcium Oxide formula)
- Molecular Weight: 56.077 g/mol (Molar Mass)
- Packaging: 50 KGS BAG
- Origin: India
Primary Applications
- Core fluxing agent in metallurgical steel refining and purification processes.
- Vital component in standard Calcium Oxide Fertilizer mixtures and agricultural lime amendments.
- Efficient alkaline reactant utilized extensively for industrial whitewashing and building mortar.
- Excellent moisture absorbent and desiccant compound within industrial settings.
- Widespread utility in pH adjustment, water treatment facilities, and paper manufacturing plants.
SKU: CO001
MPN: CALCIUM-OXIDE-DPRJ-001
Category: Chemicals → Alkaline Earth Oxides → Calcium Oxide
Brand: DPRJ Universal
Price Range (Bulk Wholesale)
₹20 - ₹30 per kg
Price valid until: 31 Dec 2026
Availability: In Stock for Immediate Bulk Orders
Customer Rating
⭐ 4.9 / 5
Based on 2,103 verified industrial buyers
“The premium consistency of their quicklime powder allows flawless reactive output during our slaking and pH control stages. An exceptionally professional supplier setup.”
— Verified Industrial Buyer, Steel & Metallurgy Plant
Shipping & Delivery
Destination: India
Shipping Cost: Free (Bulk Orders)
Handling Time: 1–2 Days
Transit Time: 2–5 Days
Return Policy
Return Window: 7 Days (for non-compliant quality)
Return Method: Return By Mail/Pickup
Return Fees: Free Return (on verified quality issue)
Frequently Asked Questions
What is the primary use of Calcium Oxide?
The primary industrial use of Calcium Oxide is in steel manufacturing, water treatment, and acid neutralization. It is extensively used in producing paper, as a chemical intermediate, in specialized calcium oxide fertilizer formulas, and for traditional whitewashing applications.
What is the molecular weight and chemical formula of Calcium Oxide?
The chemical formula for Calcium Oxide is CaO. Its molecular weight (or molar mass) is approximately 56.077 g/mol.
How does Calcium Oxide react with water?
Calcium oxide reacts vigorously with water to produce Calcium Hydroxide [Ca(OH)2]. This process is known as slaking, which releases an intense amount of exothermic heat and transforms the quicklime powder or lumps into slaked lime.
What is the Calcium Oxide structure and chemical classification?
Calcium Oxide features an ionic crystalline structure similar to sodium chloride, containing a cubic lattice of calcium cations (Ca2+) and oxide anions (O2-). Chemically, it is classified as a highly basic alkaline earth metal oxide.
Is Calcium Oxide an acidic or basic oxide?
Calcium Oxide is a strongly basic oxide. When it dissolves in water, it forms an alkaline solution of calcium hydroxide, exhibiting a high pH level.
What are the key physical properties, such as melting point and appearance?
Key physical properties of high-purity Calcium Oxide include an exceptionally high melting point of 2572°C. It appears as a white to off-white, odorless, crystalline solid or porous lump form.
How is Calcium Oxide used for whitewashing?
For whitewashing, calcium oxide quicklime reacts with water to form calcium hydroxide paste. Once applied onto walls, it absorbs carbon dioxide from the surrounding air to gradually convert back into a durable layer of bright white calcium carbonate.
Is Calcium Oxide hazardous and what are the handling precautions?
Yes, Calcium Oxide is a hazardous substance capable of causing severe irritation and chemical burns to skin and eyes upon contact. Due to its intense exothermic reaction with moisture, strict handling protocols demand the use of dry personal protective equipment (PPE), safety goggles, and proper ventilation.
What is the common name or trade name for Calcium Oxide?
The most widely recognized common name for Calcium Oxide is quicklime or burnt lime. In localized regional trading hubs, it is also frequently referred to by terms like 'lime' or 'calcium oxide ka sutra'.
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