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Iodine Crystals Extra Pure
Original price was: $ 17.30.$ 17.23Current price is: $ 17.23.
Iodine Crystals Extra Pure are dark violet, lustrous flakes known for their high purity and reliable reactivity. They are widely used in analytical chemistry, pharmaceutical formulations, and as a key reagent in iodine value determination, starch testing, and microbial staining. Their antiseptic properties also make them useful in disinfection and laboratory microbiology. Due to their sublimation tendency, iodine crystals should be stored in tightly sealed containers in a cool, dry, and well-ventilated area. Their purity ensures minimal contamination, making them ideal for precision work in research and educational laboratories.
Iodine Crystals Extra Pure
Primary Uses
- Starch Detection in Analytical Chemistry:
Iodine crystals are widely used in iodine-starch tests to qualitatively detect the presence of starch in biological or food samples, producing a characteristic blue-black complex. - Preparation of Iodine Solutions (e.g., Lugol’s Iodine, Iodine Tincture):
Used as a raw material for making standardized iodine solutions for titration, antiseptic preparations, or reagent use. - Redox Titrations (Iodometry and Iodimetry):
Crucial in volumetric analysis involving oxidation-reduction reactions, such as the quantitative determination of oxidizing or reducing agents.
Secondary Uses
- Microbiology – Gram Staining Protocol:
Functions as a mordant in the Gram stain technique, helping fix the crystal violet dye into Gram-positive bacterial cell walls. - Organic Synthesis and Halogenation Reactions:
Iodine is used in iodination of organic compounds, serving as a halogenating agent in the synthesis of pharmaceuticals and fine chemicals. - Visualization of Thin-Layer Chromatography (TLC):
Employed as a TLC stain, where iodine vapors help reveal organic compounds on chromatographic plates by forming visible brown or yellow spots.
| PACK SIZE | 100ml |
|---|
1. Basic Identification Attributes
- Product Name: Iodine Crystals
- Grade: Extra Pure (Laboratory/Analytical Grade)
- Chemical Formula: I₂
- CAS Number: 7553-56-2
- UN Number: 3495
- Molecular Weight: 253.81 g/mol
- Appearance: Shiny, dark grey to violet-black crystalline solid
- Odor: Sharp, distinct metallic odor (pungent)
2. Physical & Chemical Properties
- Melting Point: ~113.7 °C
- Boiling Point: ~184.3 °C (sublimes directly to vapor)
- Solubility:
- Slightly soluble in water
- Soluble in ethanol, ether, and potassium iodide solution
- Vapor Density: Heavier than air
- Vapor Pressure: Can release vapors at room temperature
3. Safety & Hazard Attributes
- GHS Classification:
⚠️ Oxidizing Solid (Category 2)
⚠️ Acute Toxicity – Inhalation, Oral, Dermal (Category 4)
⚠️ Skin Corrosion/Irritation (Category 2)
⚠️ Aquatic Acute & Chronic Toxicity (Category 1) - Hazard Statements:
- H302: Harmful if swallowed
- H332: Harmful if inhaled
- H315: Causes skin irritation
- H319: Causes serious eye irritation
- H410: Very toxic to aquatic life with long-lasting effects
- PPE Requirements:
- Chemical-resistant gloves (e.g., nitrile)
- Safety goggles or face shield
- Lab coat
- Fume hood use recommended
- First Aid Measures:
- Inhalation: Move to fresh air; seek medical attention
- Skin Contact: Rinse with water; remove contaminated clothing
- Eye Contact: Rinse immediately with plenty of water; seek help
- Ingestion: Do NOT induce vomiting; seek medical help immediately
4. Storage & Handling Attributes
- Storage Conditions:
- Store tightly sealed in a cool, dry, well-ventilated area
- Protect from moisture, light, and heat
- Use only in well-ventilated areas or fume hoods
- Container Type: Amber glass or tightly sealed chemical-resistant container
- Incompatibilities:
- Ammonia, acetylene, reducing agents, combustible materials
5. Regulatory & Compliance Attributes
- Transport Information:
- UN Number: 3495
- Hazard Class: 8 (Corrosive)
- Packing Group: III
- Environmental Hazards: Very toxic to aquatic organisms—prevent release into drains
6. Laboratory Applications
- Primary Uses:
- Staining in microscopy (e.g., starch test)
- Reagent in iodometric titrations
- Disinfectant and antiseptic research
- Synthesis of iodine compounds
- Secondary Uses:
- Demonstrations of sublimation and halogen chemistry
- Reagent in analytical chemistry
- Development of iodine tincture and iodine-based solutions
SAFETY PRECAUTIONS
Personal Protective Equipment (PPE):
- Wear lab coat, chemical-resistant gloves (nitrile or neoprene), and safety goggles.
- Use a fume hood to avoid inhaling vapors.
Handling:
- Handle under adequate ventilation.
- Avoid contact with skin, eyes, and clothing.
- Do not breathe dust or vapors.
- Wash hands thoroughly after handling.
Storage:
- Store in a tightly sealed container in a cool, dry, and well-ventilated area.
- Protect from light and incompatible substances such as strong reducing agents and ammonia.
- Keep away from heat and moisture.
FIRST AID MEASURES
Inhalation:
- Move the person to fresh air immediately.
- Seek medical attention if symptoms like coughing, difficulty breathing, or irritation occur.
Skin Contact:
- Remove contaminated clothing.
- Wash affected area thoroughly with soap and water.
- Get medical advice if irritation persists.
Eye Contact:
- Rinse cautiously with water for several minutes.
- Remove contact lenses if present and easy to do.
- Continue rinsing and seek medical attention.
Ingestion:
- Rinse mouth thoroughly.
- Do not induce vomiting.
- Seek immediate medical attention.
FIRE FIGHTING MEASURES
Flammability:
- Not flammable, but may contribute to combustion by releasing iodine vapors.
Extinguishing Media:
- Use water spray, dry chemical, or carbon dioxide.
- Do not use water jet directly on material—it may spread iodine vapors.
Hazardous Combustion Products:
- Iodine vapors, hydrogen iodide, and irritating fumes.
Firefighter Protection:
- Wear full protective clothing and self-contained breathing apparatus (SCBA).
- Avoid inhaling fumes from combustion.
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