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Calcium Hyroxide Extra Pure
Original price was: $ 18.00.$ 17.34Current price is: $ 17.34.
Calcium Hyroxide Extra Pure is a finely powdered, high-purity inorganic compound commonly used in laboratories as a strong base, pH adjuster, and reagent in qualitative and quantitative analysis. It is widely employed in acid-base titrations, preparation of limewater for carbon dioxide detection, and precipitation reactions involving metal ions. Its strong alkalinity also makes it useful in studying saponification, neutralization, and hydration processes. The extra pure grade ensures minimal impurities, making it suitable for sensitive analytical procedures and educational demonstrations. It should be stored in tightly sealed containers to prevent carbonation and moisture absorption, which can affect its chemical properties.
Calcium Hyroxide Extra Pure
Primary Uses
- Standard Alkali for Acid-Base Titrations
- Used as a mild base in volumetric analysis and titrations, especially when standardizing weak acids or in reactions where stronger alkalis (e.g., NaOH) may interfere.
- Preparation of Limewater for CO₂ Testing
- Saturated solution (limewater) is used to detect carbon dioxide via precipitation of calcium carbonate—a classic qualitative test in educational chemistry labs.
- Reagent in Inorganic Precipitation Reactions
- Involved in double displacement and precipitation reactions, such as forming metal hydroxides for separation or identification purposes.
- pH Adjustment and Buffering Agent
- Used in buffer preparation and to maintain or raise pH in reactions that require weak alkali conditions.
Secondary Uses
- Demonstrating Solubility and Equilibrium Principles
- Useful in teaching concepts of saturated solutions, Ksp (solubility product), and dynamic equilibrium using limewater systems.
- CO₂ Absorbent in Controlled Experiments
- Sometimes used to trap or remove CO₂ from reaction atmospheres or closed systems.
- Microbial or Sterilization Studies
- Its alkaline nature makes it useful in bacterial inhibition experiments or basic pH sterilization methods for media in microbiology labs.
| PACK SIZE | 500 grams Plastic Tin |
|---|
1. Basic Identification Attributes
- Chemical Name: Calcium Hydroxide
- Chemical Formula: Ca(OH)₂
- CAS Number: 1305-62-0
- HS Code: 2825.90.00
- Grade: Extra Pure (Laboratory Grade)
- Synonyms: Slaked Lime, Hydrated Lime, Caustic Lime
2. Physical & Chemical Properties
- Appearance: White powder or colorless crystals
- Odor: Odorless
- Molar Mass: 74.09 g/mol
- Melting Point: ~580 °C (decomposes)
- Solubility:
- Slightly soluble in water (~1.73 g/L at 20 °C)
- Forms a basic solution (limewater)
- pH (saturated solution): ~12.4
- Reactivity: Reacts with acids, CO₂, and ammonium salts
3. Safety & Hazard Attributes
- GHS Classification:
- Skin Irritant (Category 2)
- Eye Damage (Category 1)
- Hazard Statements:
- H315: Causes skin irritation
- H318: Causes serious eye damage
- Precautionary Statements:
- Wear protective gloves and eye protection
- Avoid breathing dust
- Wash hands thoroughly after handling
- NFPA Ratings:
- Health: 2
- Flammability: 0
- Reactivity: 1
4. Storage & Handling Attributes
- Storage Conditions:
- Store in tightly closed containers
- Keep in a dry, cool, well-ventilated area
- Protect from moisture and carbon dioxide (can convert to calcium carbonate)
- Packaging: Plastic jars, HDPE bottles, moisture-resistant containers
- Handling Precautions:
- Avoid dust generation
- Handle under fume hood if large quantities are involved
5. Regulatory & Compliance Attributes
- Transport Classification: Not classified as hazardous for transport
- Disposal Considerations:
- Neutralize with dilute acid before disposal
- Dispose of in accordance with local regulations for alkaline chemicals
6. Environmental & Health Impact
- Toxicity:
- Low systemic toxicity
- Causes severe eye and skin irritation on contact
- Ecotoxicity:
- Alkaline material may disrupt pH in aquatic environments
- Biodegradability: Not applicable (inorganic base)
SAFETY PRECAUTIONS
- Personal Protective Equipment (PPE):
- Wear chemical splash goggles, gloves, lab coat, and optionally a face shield.
- Use a dust mask or respirator if dust is generated.
- Handling:
- Handle in a well-ventilated area.
- Avoid inhalation of dust and contact with eyes or skin.
- Do not mix with acids without proper precautions — can generate heat.
- Storage:
- Store in a cool, dry, tightly closed container.
- Keep away from moisture, incompatible materials (acids, ammonium salts), and CO₂ (reacts to form calcium carbonate).
FIRST AID MEASURES
- Inhalation:
- Move person to fresh air.
- If breathing is difficult, provide oxygen and seek medical attention.
- Skin Contact:
- Immediately wash with soap and water.
- Remove contaminated clothing.
- Seek medical attention if irritation persists.
- Eye Contact:
- Rinse cautiously with water for at least 15 minutes.
- Lift eyelids occasionally.
- Seek immediate medical assistance.
- Ingestion:
- Rinse mouth with water.
- Do not induce vomiting.
- Give water to dilute and seek immediate medical attention.
FIRE FIGHTING MEASURES
- Flammability:
- Not flammable.
- However, it reacts exothermically with water and acids, which can intensify a fire.
- Extinguishing Media:
- Use water spray, dry chemical, foam, or CO₂ for surrounding fires.
- Do not use water directly on dry powder — may cause heat and spattering.
- Hazardous Combustion Products:
- May emit calcium oxide and irritating vapors when heated.
- Firefighter Protection:
- Wear SCBA and full protective gear.
- Avoid creating airborne dust during firefighting.
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