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Calcium Oxide lumps Extra Pure
Original price was: $ 17.00.$ 16.80Current price is: $ 16.80.
Calcium Oxide lumps Extra Pure is a high-purity, white to grayish solid commonly known as quicklime, widely used in laboratory settings for its strong basic and dehydrating properties. In analytical and preparative chemistry, it is utilized for drying organic solvents and gases, preparing calcium hydroxide solutions, and studying exothermic hydration reactions. Its reactive nature with water makes it ideal for demonstrations of heat evolution and chemical changes. The lump form provides a slower, controlled reactivity, especially useful in large-scale or prolonged experiments. The extra pure grade ensures consistent composition with minimal impurities, essential for precise scientific applications. It must be stored in airtight containers to prevent reaction with atmospheric moisture and carbon dioxide.
Calcium Oxide lumps Extra Pure
Primary Uses
- Reagent for Gas Generation
- Reacted with water to generate calcium hydroxide and heat; also used to produce carbon dioxide from carbonates in controlled thermal reactions.
- Strong Desiccant (Drying Agent)
- Employed as a drying agent for gases and organic solvents, particularly in glass desiccators or gas-drying columns.
- Acid Neutralization Experiments
- Used in acid–base titration demonstrations and educational labs to neutralize acidic solutions due to its strong basicity.
- Preparation of Calcium Compounds
- Starting material for making other calcium salts (e.g., calcium chloride, calcium acetate) during in-lab synthesis.
- Thermal Decomposition Studies
- Commonly used in thermogravimetric analysis (TGA) to study decomposition of carbonates and thermal stability of inorganic substances.
Secondary Uses
- Demonstration of Exothermic Reactions
- Reacting with water illustrates hydration exothermicity, often used in general chemistry education.
- Flux in Metallurgical Experiments
- Serves as a flux in laboratory-scale smelting or high-temperature material science simulations.
- pH Adjustment in Slurry Systems
- Occasionally used in lab testing of suspension systems or wastewater simulations to adjust pH levels.
- Material in Cement & Ceramic Research
- Included in geopolymer and mineral-binding studies, especially when researching synthetic cements or ceramic precursors.
| PACK SIZE | 500 grams Plastic Tin |
|---|
1. Basic Identification Attributes
- Chemical Name: Calcium Oxide
- Chemical Formula: CaO
- CAS Number: 1305-78-8
- HS Code: 2825.90.00
- Grade: Extra Pure (Laboratory Grade)
- Synonyms: Quicklime, Burnt lime, Lime, Calx
2. Physical & Chemical Properties
- Appearance: Hard white to grayish-white lumps
- Odor: Odorless
- Molar Mass: 56.08 g/mol
- Solubility: Reacts with water to form calcium hydroxide
- Density: ~3.34 g/cm³
- Melting Point: ~2,572 °C
- Boiling Point: ~2,850 °C
- Reactivity: Exothermic reaction with water to form slaked lime (Ca(OH)₂)
3. Safety & Hazard Attributes
- GHS Classification:
- Skin corrosion/irritation (Category 1A)
- Serious eye damage (Category 1)
- Hazard Statements:
- H314: Causes severe skin burns and eye damage
- H318: Causes serious eye damage
- Precautionary Statements:
- Wear protective gloves, clothing, and eye protection
- Avoid breathing dust or fumes
- Always add lime to water, not water to lime
4. Storage & Handling Attributes
- Storage Conditions:
- Store in airtight containers
- Keep dry and protected from moisture and CO₂
- Packaging: HDPE drums, moisture-resistant plastic or glass jars for lab use
- Handling Precautions:
- Use under fume hood or with adequate ventilation
- React slowly and carefully with water when preparing slaked lime
5. Regulatory & Compliance Attributes
- Transport Classification:
- Not classified as hazardous for ground transport in lab quantities
- Disposal Considerations:
- Neutralize with dilute acid before disposal
- Follow local environmental regulations
6. Environmental & Health Impact
- Toxicity:
- Caustic and damaging to tissues upon contact
- Ecotoxicity:
- Can alter pH of water bodies, affecting aquatic life
- Biodegradability: Not applicable; it is an inorganic compound
- Fumes: Dust or reaction vapors may irritate respiratory system
SAFETY PRECAUTIONS
- Personal Protective Equipment (PPE):
- Wear safety goggles, chemical-resistant gloves, dust mask or respirator (if dust is generated), and a lab coat.
- Handling:
- Avoid breathing dust and avoid contact with skin and eyes.
- Handle only in well-ventilated areas or under a fume hood.
- Reacts exothermically with water — avoid moisture.
- Storage:
- Store in a tightly sealed container in a cool, dry, and well-ventilated place.
- Keep away from moisture, acids, and incompatible materials like aluminum or organic matter.
FIRST AID MEASURES
- Inhalation:
- Move to fresh air immediately.
- If symptoms persist (e.g., coughing or breathing difficulty), seek medical attention.
- Skin Contact:
- Wash affected area thoroughly with plenty of water.
- Remove contaminated clothing.
- If irritation continues, seek medical help.
- Eye Contact:
- Rinse cautiously with water for at least 15 minutes.
- Hold eyelids open.
- Seek immediate medical attention — calcium oxide is severely irritating to eyes.
- Ingestion:
- Do not induce vomiting.
- Rinse mouth and drink water.
- Seek immediate medical assistance.
FIRE FIGHTING MEASURES
- Flammability:
- Non-flammable but reacts vigorously with water, generating heat that can ignite combustibles.
- Extinguishing Media:
- Use dry chemical, CO₂, or appropriate extinguishing media for surrounding fire.
- Do not use water directly on calcium oxide.
- Hazardous Combustion Products:
- May release toxic fumes (e.g., calcium hydroxide dust) upon contact with water and heat.
- Firefighter Protection:
- Wear self-contained breathing apparatus (SCBA) and full protective clothing.
- Avoid water contact with the substance during firefighting.
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