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Cobalt Chloride Extra Pure

Original price was: $ 23.20.Current price is: $ 23.12.

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Cobalt Chloride Extra Pure is a high-purity, pink to deep purple crystalline compound widely used in laboratories for analytical, inorganic, and coordination chemistry. It is especially valued as a humidity indicator, turning from blue (anhydrous) to pink (hydrated) depending on moisture levels. In research settings, it serves as a precursor for synthesizing other cobalt compounds, as well as a reagent in qualitative tests for water, ammonium ions, and complex formation studies. Its extra pure grade ensures precise, contamination-free results, making it ideal for experiments requiring high accuracy. Proper handling with gloves and storage in airtight containers are recommended due to its toxic and moisture-sensitive nature.

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Categories: Analytical Reagents, Inorganic and Organic Standards Tags: AnalyticalReagent, CobaltChloride, ColorimetricReagent, ExtraPure, InorganicStandard, LabGrade, MoistureIndicator, TransitionMetalSalt

Description

Table of Contents

Cobalt Chloride Extra Pure

Primary Uses

Humidity Indicator in Desiccators
- Cobalt(II) chloride is widely used as a moisture indicator due to its color change:
  - Blue (anhydrous) → Pink (hydrated)
    Ideal for monitoring humidity levels in desiccators or sealed lab containers.
Analytical Chemistry (Qualitative Tests)
- Acts as a reagent for detecting water in solvents and gases.
- Used in chloride ion detection and complex ion formation tests.
Coordination Chemistry Studies
- Frequently used in inorganic labs to synthesize and study transition metal complexes, especially with ligands like ammonia, ethylenediamine, etc.
Thermochromic Demonstrations
- Used in educational demonstrations to visually show reversible chemical reactions involving water of hydration.

Secondary Uses

Electrochemical Studies
- Investigated in redox reactions, electroplating, and battery chemistry involving cobalt species.
Teaching Tool in General Chemistry
- Demonstrates hydration/dehydration reactions, oxidation states, and Le Chatelier’s Principle in equilibrium reactions.
Precursor for Cobalt-based Catalysts
- Serves as a starting material for preparing cobalt oxide catalysts and heterogeneous catalytic materials in lab-scale synthesis.
pH-Sensitive Ink Experiments
- Used in preparing invisible inks that appear or disappear with pH or heat changes — common in educational chemistry projects.

KEY PRODUCT FEATURES

1. Basic Identification Attributes

Chemical Name: Cobalt(II) Chloride
CAS Number: 7646-79-9
Chemical Formula: CoCl₂ (anhydrous), CoCl₂·6H₂O (hexahydrate)
Molar Mass:
- Anhydrous: 129.84 g/mol
- Hexahydrate: 237.93 g/mol
Synonyms: Cobaltous chloride, cobalt dichloride

2. Physical & Chemical Properties

Appearance:
- Anhydrous: Blue crystalline solid
- Hexahydrate: Pink to purple crystals
Solubility: Highly soluble in water and alcohol
Melting Point:
- Anhydrous: 735°C
- Hexahydrate: Loses water at ~86°C
Boiling Point (Anhydrous): ~1049°C
pH (1% solution): ~4–5
Odor: Odorless

3. Safety & Hazard Attributes

GHS Classification:
- ☣️ Danger
- H302: Harmful if swallowed
- H317: May cause allergic skin reaction
- H334: May cause allergy or asthma symptoms
- H350i: May cause cancer by inhalation
- H360F: May damage fertility
- H410: Very toxic to aquatic life
NFPA Ratings:
- Health: 3
- Flammability: 0
- Reactivity: 0
First Aid Measures:
- Inhalation: Move to fresh air; seek immediate medical attention
- Skin Contact: Rinse with soap and water; remove contaminated clothing
- Eye Contact: Flush eyes with water for 15 minutes
- Ingestion: Rinse mouth; do not induce vomiting; seek medical advice

4. Storage & Handling Attributes

Storage Conditions:
- Keep in a tightly closed container
- Store in a dry, cool, well-ventilated area
- Protect from moisture and incompatible substances (e.g., strong oxidizers)
Shelf Life: Stable under recommended storage conditions
Container Requirements: Use corrosion-resistant material (glass, HDPE)

5. Regulatory & Compliance Attributes

EINECS Number: 231-589-4
REACH Status: Subject to authorisation; classified as SVHC
IARC Classification: Group 2B (possibly carcinogenic to humans)

6. Applications in Laboratory & Industry

Laboratory Use:
- Humidity indicator (color change: blue ↔ pink)
- Synthesis of coordination compounds
- Analytical chemistry (e.g., tests for ammonia, chloride)
Other Uses:
- Electroplating and surface treatment
- Ceramics and glass colorants
- Pigment production

SAFETY HANDLING PRECAUTIONS

SAFETY PRECAUTIONS

PPE Required:
- Lab coat
- Chemical-resistant gloves (e.g., nitrile)
- Safety goggles or face shield
- Dust mask or use in a fume hood
Handling:
- Handle with care in a well-ventilated area.
- Avoid generating dust.
- Do not breathe dust or vapors.
- Avoid contact with skin, eyes, and clothing.
Storage:
- Store in a tightly sealed container.
- Keep in a cool, dry, well-ventilated place.
- Protect from moisture and incompatible materials (e.g., strong acids or oxidizers).

FIRST AID MEASURES

Inhalation:
- Remove the person to fresh air immediately.
- Seek medical attention if symptoms like coughing or shortness of breath occur.
Skin Contact:
- Wash with soap and plenty of water for at least 15 minutes.
- Remove contaminated clothing.
- Seek medical advice if irritation develops.
Eye Contact:
- Rinse thoroughly with water for 15 minutes while lifting eyelids.
- Get immediate medical attention.
Ingestion:
- Rinse mouth with water.
- Do not induce vomiting.
- Seek immediate medical attention.
- Cobalt compounds are toxic if ingested.

FIREFIGHTING MEASURES

Flammability:
- Non-flammable, but may emit toxic fumes when heated.
Decomposition Products:
- Cobalt oxides, hydrogen chloride gas
Suitable Extinguishing Media:
- Use extinguishing media appropriate for surrounding materials (CO₂, dry powder, foam, water spray).
Protective Equipment for Firefighters:
- Full protective suit and self-contained breathing apparatus (SCBA)