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Calcium Granular Extra Pure
Original price was: $ 16.00.$ 15.00Current price is: $ 15.00.
Calcium Granular Extra Pure consists of high-purity metallic calcium in granulated form, primarily used in laboratory environments for chemical synthesis, metallothermic reduction reactions, and moisture-sensitive experiments. It serves as a strong reducing agent, especially in the preparation of metals from their oxides and halides. Due to its high reactivity with water and oxygen, it is also used in experiments involving hydrogen generation and exothermic metal-acid reactions. The extra pure grade ensures minimal contamination, essential for precise analytical and preparative applications. It should be stored in sealed, inert-atmosphere containers or under mineral oil to prevent oxidation and preserve its reactivity.
Calcium Granular Extra Pure
Primary Uses
- Reductant in Metallothermic Reactions
- Used as a strong reducing agent in preparing metals from oxides or halides (e.g., uranium, thorium), particularly in metallurgical research or pyrometallurgy studies.
- Generation of Hydrogen Gas
- Reacts readily with water or dilute acids (e.g., HCl) to produce calcium ions and hydrogen gas, ideal for controlled gas generation demonstrations.
- Educational Demonstration of Alkaline Earth Reactivity
- Helps compare reactivity across Group 2 elements (alkaline earth metals) in school and college-level chemistry classes.
Secondary Uses
- Source of Calcium Ions in Non-Aqueous Systems
- Occasionally used in non-aqueous solvent systems or high-purity environments where hydrated salts are unsuitable.
- Synthesis of Organocalcium Compounds
- Acts as a base or nucleophile precursor in the preparation of organocalcium intermediates in experimental organometallic chemistry.
- Deoxidizer in Laboratory-Scale Alloy Production
- Used in small-scale alloy synthesis as a deoxidizing additive, particularly in experimental materials science.
| PACK SIZE | 100 grams Plastic Tin |
|---|
1. Basic Identification Attributes
- Chemical Name: Calcium (Granular)
- Chemical Formula: Ca
- CAS Number: 7440-70-2
- HS Code: 2805.12.00
- Grade: Extra Pure (Laboratory Grade)
- Synonyms: Metallic Calcium, Calcium metal granules, Granular calcium
2. Physical & Chemical Properties
- Appearance: Greyish to silvery-white metallic granules
- Odor: Odorless
- Molar Mass: 40.08 g/mol
- Melting Point: ~842 °C
- Boiling Point: ~1,484 °C
- Solubility:
- Insoluble in water
- Reacts with water to form calcium hydroxide and hydrogen gas
- Density: ~1.55 g/cm³
- Reactivity: Highly reactive, especially with water, acids, and moisture in the air
3. Safety & Hazard Attributes
- GHS Classification:
- Water-reactive (Category 1)
- Skin Irritant (Category 2)
- Hazard Statements:
- H260: In contact with water releases flammable gases
- H315: Causes skin irritation
- Precautionary Statements:
- Keep away from water and moisture
- Handle under inert atmosphere or dry conditions
- Avoid contact with skin and eyes
- NFPA Ratings:
- Health: 2
- Flammability: 1
- Reactivity: 2
4. Storage & Handling Attributes
- Storage Conditions:
- Store in tightly sealed containers under dry inert gas (e.g., argon)
- Keep away from water, acids, and humid air
- Packaging: Airtight glass jars, vacuum-sealed bags, or containers flushed with inert gas
- Handling Precautions:
- Use tweezers or forceps
- Avoid generating dust
- Do not handle with wet hands or in damp conditions
5. Regulatory & Compliance Attributes
- Transport Classification (UN):
- UN1401 – Calcium (classified as dangerous when shipped in reactive form)
- Disposal Considerations:
- React with isopropanol to neutralize slowly
- Do not dispose of in water systems
- Follow local hazardous waste guidelines
6. Environmental & Health Impact
- Toxicity:
- Low systemic toxicity
- Reacts strongly with water to release hydrogen – explosion risk
- Ecotoxicity:
- Reactive metal; may alter water pH and harm aquatic life if improperly disposed
- Biodegradability: Not applicable (elemental metal)
SAFETY PRECAUTIONS
- Personal Protective Equipment (PPE):
- Wear a lab coat, chemical-resistant gloves, and safety goggles.
- Use a face shield when handling large amounts.
- Handling:
- Handle under an inert atmosphere (e.g., argon) or in a dry box when possible.
- Keep away from moisture, water, acids, and oxidizers.
- Avoid creating dust or allowing the material to contact skin.
- Storage:
- Store in tightly sealed containers in a cool, dry, well-ventilated area.
- Protect from humidity, water, and air exposure — highly reactive with water.
FIRST AID MEASURES
- Inhalation:
- Move to fresh air.
- If breathing is difficult, administer oxygen.
- Seek medical attention if symptoms persist.
- Skin Contact:
- Brush off any loose particles.
- Rinse skin with plenty of water.
- Remove contaminated clothing and get medical help if irritation occurs.
- Eye Contact:
- Immediately flush eyes with copious water for at least 15 minutes.
- Seek immediate medical attention.
- Ingestion:
- Do not induce vomiting.
- Rinse mouth with water and seek immediate medical attention.
- May release hydrogen gas in the stomach.
FIRE FIGHTING MEASURES
- Flammability:
- Flammable solid, especially when finely divided.
- Reacts with water to produce flammable hydrogen gas and heat.
- Extinguishing Media:
- Use Class D dry powder extinguishers (e.g., dry sand, graphite powder).
- Do NOT use water, foam, or CO₂ — may cause explosive reactions.
- Hazardous Combustion Products:
- Calcium oxide (CaO) and hydrogen gas (H₂).
- Firefighter Protection:
- Wear self-contained breathing apparatus (SCBA) and full chemical protective gear.
- Fight fire from a safe distance and avoid dust dispersion.
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