Propylene Glycol Phenyl Ether (1-Phenoxy-2-propanol, PPH)

CAS No.: 770-35-4
Synonyms / IUPAC Name: 1-Phenoxy-2-propanol; Propylene glycol phenyl ether (PPH)
Molecular Formula: C₉H₁₂O₂
Molecular Weight: ~152.19 g/mol

Physicochemical Properties (Typical)

• Appearance: Clear to slightly yellow liquid
• Odor: Low, faint aromatic ether-like odor
• Boiling Point (760 mmHg): ~ 241–243 °C
• Melting / Freezing Point: ~ 11 °C
• Density (20–25 °C): ~ 1.06 g/cm³
• Flash Point (Closed Cup): ~ 115 °C
• Vapor Pressure (20 °C): < 0.01 mmHg
• Solubility: Poor in water (~15 g/L); miscible with most organic solvents
• Evaporation Rate (n-butyl acetate = 1): < 0.01 (very slow evaporating)

Purity & Quality Standards

• Purity: Typically ≥ 99.0% for high-grade solvents
• Appearance: Clear or slightly yellow, free from visible particles
• Odor: Low, acceptable for industrial use
• Documentation: Certificate of Analysis (COA) and Safety Data Sheet (SDS) provided

Applications / Uses

• Solvent / coalescent in water-based architectural and industrial coatings
• Carrier solvent for textile dyes, inks (felt tip, ball point, stamp pads) and printing pastes
• Coalescent in latex adhesives and metalworking fluids
• Used in marine and industrial coatings where slow evaporation and high hydrophobicity are required

Safety & Handling

• Health Hazards:
• Causes serious eye irritation
• May cause skin irritation on prolonged or repeated contact
• Inhalation of vapour/mist may cause respiratory tract irritation
• Precautions:
• Use in well-ventilated areas or under local exhaust ventilation
• Wear protective gloves and eye/face protection
• Avoid breathing vapours and prevent contact with eyes and skin
• Reactivity / Incompatibilities:
• Avoid strong oxidizing agents
• Stable under normal conditions
• First Aid:
• Eye Contact: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do; continue rinsing. Seek medical attention if irritation persists.
• Skin Contact: Wash with plenty of soap and water. Remove contaminated clothing.
• Inhalation: Move to fresh air and keep comfortable for breathing; seek medical advice if symptoms occur.
• Ingestion: Rinse mouth. Do NOT induce vomiting unless directed by medical personnel; seek medical attention.

Packaging & Storage

• Packaging: Sealed solvent-compatible containers (drums or IBC depending on volume)
• Storage Conditions: Store in a cool, dry, well-ventilated area away from ignition sources and strong oxidizers
• Container Closure: Keep tightly closed when not in use to prevent contamination and evaporation
• Shelf Life: Typically 12–24 months under recommended storage conditions