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Calcium Metal Extra Pure
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LABORATORY GRADE

Calcium Nitrate Tetrahydrate Extra Pure

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Calcium Nitrate Tetrahydrate Extra Pure is a crystalline, highly soluble laboratory-grade compound widely used as a source of calcium ions in analytical chemistry, solution preparation, and coordination studies. Its tetravalent hydrate form allows for controlled moisture content, making it ideal for reproducible experimental setups. This salt is frequently employed in qualitative tests for fluoride and carbonate ions, and in synthesis involving double displacement reactions. In teaching laboratories, it is also used to demonstrate solubility principles and endothermic dissolution behavior. The extra pure quality ensures minimal interference from contaminants, supporting high-precision research and reliable analytical results. It should be stored in a cool, dry environment to prevent caking and preserve its reactivity.

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Description

Primary Uses
Precursor for Calcium-Based Compounds

Used to synthesize calcium salts (e.g., calcium carbonate, calcium oxalate) by double displacement or precipitation reactions.

Analytical Reagent

Serves as a source of Ca²⁺ ions in qualitative and quantitative tests, especially in studies involving ionic equilibria or complexometric titrations.

Fertilizer Studies in Agricultural Labs

Used in research labs to simulate or analyze the behavior of nitrate-based fertilizers, especially in plant growth experiments.

Teaching and Demonstration Experiments

Employed in solubility and ionic reaction demonstrations in chemistry education settings, showing nitrate solubility and calcium ion reactions.

Secondary Uses
Heat Pack Reaction Studies

Involved in endothermic or exothermic reaction investigations due to its dissolution characteristics.

Electrochemical Research

Occasionally used in electrolyte formulations or salt bridge solutions due to high solubility and ionic conductivity.

Synthesis of Coordination Complexes

Acts as a calcium source in experiments involving the formation of metal-ligand complexes.

PRODUCT KEY FEATURES

Basic Identification Attributes
Chemical Name: Calcium Nitrate Tetrahydrate

Chemical Formula: Ca(NO₃)₂·4H₂O

CAS Number: 13477-34-4

HS Code: 2834.29.90

Grade: Extra Pure (Laboratory Grade)

Synonyms: Norwegian Saltpeter, Calcium dinitrate tetrahydrate

2. Physical & Chemical Properties
Appearance: Colorless, transparent crystalline solid

Odor: Odorless

Molar Mass: 236.15 g/mol

Melting Point: ~45–50 °C (decomposes)

Density: ~1.82 g/cm³

Solubility: Highly soluble in water and alcohol

pH (5% solution): ~4.5–6.5

Reactivity: Oxidizing agent; may intensify combustion

3. Safety & Hazard Attributes
GHS Classification:

Oxidizing Solids (Category 3)

Eye Irritation (Category 2)

Hazard Statements:

H272: May intensify fire; oxidizer

H319: Causes serious eye irritation

Precautionary Statements:

Keep away from heat and flammable materials

Wear protective gloves and eye protection

Wash thoroughly after handling

4. Storage & Handling Attributes
Storage Conditions:

Store in a cool, dry, and well-ventilated area

Keep container tightly closed and away from reducing agents

Packaging: Plastic or glass jars with moisture-resistant sealing

Handling Precautions:

Avoid contact with skin and eyes

Handle in a fume hood if dust is generated

Prevent contamination with combustible materials

5. Regulatory & Compliance Attributes
Transport Classification:

Not classified as a dangerous good under most lab shipping regulations in small quantities

Disposal Considerations:

Dilute with water and neutralize before disposal

Follow local regulations for nitrate-containing waste

6. Environmental & Health Impact
Toxicity:

May cause mild irritation on contact with skin or eyes

Inhalation of dust may cause respiratory tract irritation

Ecotoxicity:

Can contribute to eutrophication of water bodies

Nitrate ions are mobile in soil and can affect groundwater

Biodegradability: Inorganic; not biodegradable

SAFETY HANDLING PRECAUTIONS

Personal Protective Equipment (PPE):

Wear safety goggles, gloves, and a lab coat.

Use in a well-ventilated area or fume hood.

Handling:

Avoid contact with skin, eyes, and clothing.

Minimize dust generation and accumulation.

Avoid mixing with combustible or organic materials — it is a strong oxidizer.

Storage:

Store in a cool, dry, well-ventilated area, away from incompatible substances like reducing agents or fuels.

Keep container tightly sealed and protected from moisture and heat.

FIRST AID MEASURES
Inhalation:

Move person to fresh air.

Seek medical attention if respiratory irritation or symptoms develop.

Skin Contact:

Wash skin thoroughly with soap and water for at least 15 minutes.

Remove contaminated clothing.

Eye Contact:

Flush eyes with plenty of water for at least 15 minutes, holding eyelids open.

Seek immediate medical attention.

Ingestion:

Rinse mouth.

Do not induce vomiting.

Seek immediate medical attention.

FIRE FIGHTING MEASURES
Flammability:

Not flammable by itself but is a strong oxidizer and can intensify fires.

Extinguishing Media:

Use water spray, foam, or dry chemical.

Do NOT use dry combustible materials like sawdust.

Hazardous Combustion Products:

May release nitrogen oxides (NOₓ) and calcium oxides when decomposed by fire.

Firefighter Protection:

Wear self-contained breathing apparatus (SCBA) and full protective gear.

Approach with caution and from upwind.

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