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Thymoil Blue Extra Pure
Original price was: $ 18.21.$ 18.09Current price is: $ 18.09.
Thymoil Blue Extra Pure is a dual-range pH indicator and high-grade analytical reagent used extensively in laboratories for acid-base titrations, buffer preparation, and spectrophotometric measurements. It offers vivid and distinct color changes over two pH ranges, making it highly valuable for both quantitative analysis and educational demonstrations. This Extra Pure grade ensures minimal impurity and consistent behavior in sensitive experimental settings. Thymol Blue should be stored in a dry, cool, and dark environment to preserve its reactivity and accuracy.
Thymoil Blue Extra Pure
PRIMARY USES
- Analytical Reagent & Laboratory Applications
- Widely used as a pH indicator in titration and acid-base chemistry
- Displays a dual-color transition: red to yellow (pH 1.2–2.8) and yellow to blue (pH 8.0–9.6)
- Employed in buffer preparation and calibration of pH meters
- Serves as a reference dye in chemical, biochemical, and educational labs
- Applied in spectrophotometric experiments to study pH-dependent behavior of compounds
SECONDARY USES
- Educational & Demonstration Use
- Used in teaching laboratories to visually demonstrate pH changes and acid-base equilibria
- Common in chemistry kits and experiments for instructional purposes due to vivid color changes
1. Basic Identification Attributes
- Chemical Name: Thymol Blue
- CAS Number: 76-61-9
- HS Code: 3204.12.00
- Molecular Formula: C₂₇H₃₀O₅S
- Synonyms: Thymolsulfonephthalein, C.I. 18585, Acid Blue 93
2. Physical & Chemical Properties
- Physical State: Powder or crystalline solid
- Color & Odor: Reddish-brown to green powder, odorless
- Melting Point: ~221 °C (decomposes)
- Solubility: Slightly soluble in water; soluble in ethanol and alkaline solutions
- pH Transition Ranges:
– Red to yellow: pH 1.2–2.8
– Yellow to blue: pH 8.0–9.6 - UV-Vis Absorbance: Characteristic peaks depending on pH; used in colorimetric assays
- Stability: Light-sensitive; stable under normal storage when protected from light and moisture
3. Safety & Hazard Attributes
- Hazard Class (GHS Classification): Not classified as hazardous under normal laboratory use
- NFPA Ratings: Health 1, Flammability 0, Reactivity 0
- Exposure Limits: No specific OSHA or ACGIH exposure limits
- Reactivity: Stable under standard conditions; avoid strong oxidizers
4. Storage & Handling Attributes
- Storage Conditions: Store in a tightly sealed container in a cool, dry, and dark place
- Incompatible Materials: Strong oxidizing agents
- Container Type: Amber glass or opaque plastic to prevent light exposure
- Shelf Life & Expiration Date: Typically stable for 2–3 years if stored properly
- Special Handling Requirements: Handle with gloves and avoid inhalation of dust
5. Regulatory & Compliance Attributes
- Regulatory Status: Approved for laboratory and research use
- Transportation Restrictions: Not classified as hazardous for transport
- Waste Disposal Method: Dispose of in accordance with local environmental and chemical waste regulations
6. Environmental & Health Impact
- Ecotoxicity: Low at laboratory concentrations; avoid release into waterways
- Persistence in Environment: Moderately persistent; limited biodegradability
- Carcinogenicity/Mutagenicity: Not classified as carcinogenic or mutagenic
- Biodegradability: Organic dye; may degrade slowly in the environment
SAFETY PRECAUTIONS
Personal Protective Equipment (PPE):
- Wear lab gloves (e.g. nitrile)
- Use safety goggles or face shield
- Wear a lab coat
- Use dust mask if powder is airborne
Handling:
- Work in a well-ventilated space
- Avoid contact with skin, eyes, or clothing
- Avoid inhalation of fine dust
- Wash hands thoroughly after handling
Storage:
- Keep container tightly closed
- Store in a cool, dry, and light-protected area
- Avoid contact with incompatible substances
FIRST AID MEASURES
Inhalation:
- Move to fresh air
- Seek medical attention if symptoms develop
Skin Contact:
- Rinse skin with water and soap
- Remove contaminated clothing
- Seek medical advice if irritation occurs
Eye Contact:
- Rinse with clean water for 15 minutes
- Keep eyelids open while rinsing
- Seek immediate medical attention if irritation persists
Ingestion:
- Rinse mouth with water
- Do not induce vomiting
- Seek medical attention if any symptoms appear
FIRE FIGHTING MEASURES
Flammability:
- Not flammable under standard conditions
Extinguishing Media:
- Use dry chemical, water spray, foam, or carbon dioxide
Hazardous Combustion Products:
- May emit carbon monoxide, carbon dioxide, and sulfur oxides
Firefighter Protection:
- Wear SCBA and full protective gear
- Avoid inhalation of combustion fumes
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