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Phenolphthalein Solution Extra Pure
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SHORT DESCRIPTION
Phenolphthalein Solution Extra Pure is a laboratory-grade pH indicator solution, commonly used in titration procedures to determine the endpoint of acid-base reactions. It is prepared by dissolving phenolphthalein powder in an appropriate solvent, typically ethanol or water-alcohol mixtures, resulting in a clear, colorless solution that turns vivid pink in basic conditions—usually in the pH range of 8.2 to 10.0.
This high-purity solution offers excellent sensitivity and reliability for analytical chemistry, quality control, and educational demonstrations. It is especially favored in alkalinity testing, neutralization reactions, and various standard laboratory protocols. Proper handling is essential, including the use of gloves and eye protection, as the solution may cause skin or eye irritation upon contact. Store tightly sealed, away from direct light and incompatible substances like strong acids or oxidizers, to maintain its stability and effectiveness.
Description
USES
PRIMARY USES
- Used as a pH indicator solution in acid-base titrations (colorless in acidic solutions and pink in alkaline solutions above pH 8.2).
- Essential in laboratory chemistry for neutralization reactions and end-point determination.
- Included in standard test procedures in educational, industrial, and research laboratories.
- Applied in water treatment testing to evaluate the pH and alkalinity of samples.
- Commonly used in teaching labs to demonstrate pH behavior visually.
SECONDARY USES
- Utilized in forensic tests (e.g., Kastle-Meyer test) for detecting the presence of blood.
- Acts as a chemical tracer in various fluid and leak detection applications.
- Occasionally used in art and science demonstrations for pH-sensitive color changes.
- Sometimes used in environmental monitoring to assess acidity or alkalinity in soil and water.
- Serves as a reference solution in calibration of pH indicators.
KEY PRODUCT FEATURES
KEY ATTRIBUTES
1. Basic Identification Attributes
- Chemical Name: Phenolphthalein Solution
- CAS Number: 77-09-8 (Phenolphthalein), 64-17-5 (Ethanol, if present)
- HS Code: 3822.00.00 (Prepared diagnostic or laboratory reagents)
- Molecular Formula: Typically C₂₀H₁₄O₄ in ethanol or aqueous-ethanol base
- Synonyms:
- Indicator Solution B
- Phph Indicator Solution
- Phenolphthalein Indicator in Ethanol
2. Physical & Chemical Properties
- Physical State: Liquid
- Color & Odor: Colorless solution (turns pink in alkaline pH); slight alcohol odor if in ethanol
- Boiling Point: Depends on solvent (ethanol: ~78 °C)
- Melting Point: Not applicable (liquid)
- Density: ~0.79–0.98 g/cm³ (varies with solvent)
- Solubility:
- Fully miscible in water/alcohol mixtures
- Soluble in ethanol
- pH Level (Indicator Range):
- Colorless below pH 8.2
- Pink to deep fuchsia above pH 10.0
- Vapor Pressure: Depends on ethanol content (~44 mmHg for pure ethanol at 20 °C)
- Flash Point: ~12–14 °C (if ethanol-based)
- Autoignition Temperature: ~363 °C (ethanol)
- Viscosity: Low
3. Safety & Hazard Attributes
- Hazard Class (GHS Classification):
- Flammable (if ethanol present)
- Health hazard (may cause irritation or suspected carcinogenicity from phenolphthalein)
- NFPA Ratings:
- Health: 2
- Flammability: 3
- Reactivity: 0
- Exposure Limits:
- OSHA PEL (ethanol): 1000 ppm
- ACGIH TLV (ethanol): 1000 ppm
- Reactivity:
- Stable under normal conditions
- Avoid heat, flame, and strong oxidizers
4. Storage & Handling Attributes
- Storage Conditions:
- Store in a cool, well-ventilated place away from ignition sources
- Keep tightly sealed
- Incompatible Materials:
- Strong acids, oxidizers, open flames
- Container Type: Amber glass or chemical-resistant plastic bottle
- Shelf Life & Expiration Date: Typically 2–3 years if unopened and stored properly
- Special Handling Requirements:
- Use gloves and eye protection
- Use under a fume hood if handling large volumes
5. Regulatory & Compliance Attributes
- Regulatory Status:
- Listed in TSCA, REACH
- Ethanol may be regulated for flammability
- Transportation Restrictions:
- UN Number: UN1170 (Ethanol Solution)
- Hazard Class: 3 (Flammable liquids)
- Waste Disposal Method:
- Dispose as hazardous chemical waste through licensed handler
6. Environmental & Health Impact
- Ecotoxicity:
- Harmful to aquatic organisms in high concentrations
- Persistence in Environment:
- Moderate persistence depending on solvent
- Carcinogenicity/Mutagenicity:
- Phenolphthalein: IARC Group 2B (possibly carcinogenic to humans)
- Ethanol: Not classified as carcinogenic at typical lab concentrations
- Biodegradability:
- Ethanol: Readily biodegradable
- Phenolphthalein: Slowly biodegradable
SAFETY HANDLING PRECAUTIONS
SAFETY PRECAUTIONS
Personal Protective Equipment (PPE):
- Wear a lab coat, nitrile gloves, and chemical-resistant goggles.
- Work in a fume hood to avoid exposure to vapors and splashes.
Handling:
- Avoid contact with skin, eyes, and clothing.
- Do not breathe vapors or mist.
- Wash hands thoroughly after handling.
- Use only in well-ventilated areas.
Storage:
- Store in a cool, dry, and well-ventilated area.
- Keep the container tightly closed when not in use.
- Keep away from heat sources, sparks, and open flames.
- Store away from strong oxidizing agents and acids.
FIRST AID MEASURES
Inhalation:
- Move the person to fresh air immediately.
- Seek medical attention if breathing becomes difficult or symptoms persist.
Skin Contact:
- Wash affected areas with soap and water.
- Remove contaminated clothing.
- Get medical attention if irritation or redness develops.
Eye Contact:
- Rinse thoroughly with water for several minutes.
- Remove contact lenses if present and easy to do.
- Continue rinsing and seek medical attention if irritation persists.
Ingestion:
- Rinse your mouth thoroughly with water.
- Do not induce vomiting.
- Seek immediate medical advice or contact poison control.
FIRE FIGHTING MEASURES
Flammability:
- May be flammable depending on the solvent (commonly ethanol or methanol based).
Extinguishing Media:
- Use dry chemical powder, alcohol-resistant foam, or carbon dioxide.
- Water spray can cool surfaces but may spread flammable liquid.
Hazardous Combustion Products:
- Can release carbon monoxide, carbon dioxide, and irritating vapors.
Firefighter Protection:
- Use self-contained breathing apparatus (SCBA) and full protective gear.
- Avoid inhaling fumes from combustion.
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