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Ethoxy Propanol
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Ethoxy Propanol, also known as Propylene Glycol Monoethyl Ether (PnP), is a clear, colorless, low-viscosity solvent with a mild ether-like odor. It belongs to the family of glycol ethers and is miscible with water and most organic solvents. Ethoxy Propanol is widely valued for its excellent solvency, moderate evaporation rate, and compatibility with both polar and non-polar systems. It is extensively used in coatings, inks, cleaners, and chemical synthesis applications due to its balance of performance and safety.
Description
Ethoxy Propanol Uses
Primary Uses
Paints, Coatings & Inks
- Acts as a coalescing agent in water-based paints and coatings to ensure film formation and durability.
- Used as a solvent for resins, dyes, and pigments in architectural, automotive, and industrial coatings.
- Improves flow, leveling, and gloss in latex paints and varnishes.
- Helps reduce surface tension in inks and improves drying time and print quality.
Cleaners & Degreasers
- Employed as an active solvent in household, institutional, and industrial cleaners due to excellent grease-cutting ability.
- Used in glass and hard-surface cleaners for streak-free drying and effective removal of oily residues.
- Compatible with surfactants and alkaline builders in formulation of degreasers and heavy-duty detergents.
Adhesives & Sealants
- Functions as a solvent or plasticizer in waterborne adhesives and sealants, aiding in uniform film formation and drying.
- Enhances wetting and open time in formulation, improving application performance.
- Compatible with polyurethane, acrylic, and phenolic adhesive systems.
Textiles & Leather Processing
- Used as a solvent carrier in textile printing pastes and dyeing formulations.
- Helps control evaporation and improve uniformity in leather finishing processes.
Electronics & Semiconductor Industry
- Used in precision cleaning of electronic components due to low residue and controlled evaporation.
- Employed in solvent blends for photoresist and printed circuit board cleaning.
Chemical Intermediate
- Serves as a building block in the synthesis of surfactants, solvents, and agrochemical formulations.
- Used in manufacturing esters, plasticizers, and other specialty chemicals.
Secondary Uses
Automotive Applications
- Added to fuel system cleaners and carburetor cleaners for its solubilizing and cleaning properties.
- Used in vehicle polish and detailing formulations for improved spreading and film integrity.
Printing Industry
- Included in printing inks for improved pigment dispersion, drying control, and substrate adhesion.
- Helps maintain print sharpness and uniformity in high-speed printing processes.
Cosmetics & Personal Care
- Occasionally used as a solvent or carrier in formulations like hair sprays, perfumes, and lotions (non-irritating at low concentrations).
- Contributes to volatility and spreadability of fragrances or actives.
Agrochemical Formulations
- Used as a solvent or carrier in pesticide and herbicide formulations for better active ingredient dispersion and penetration.
PRODUCT KEY FEATURES
Key Attributes
Basic Identification Attributes
- Chemical Name (IUPAC): 1-Ethoxy-2-propanol
- Common/Trade Name: Ethoxy Propanol, Propylene Glycol Monoethyl Ether (PnP)
- CAS Number: 1569-02-4
- HS Code: 2909.49.00
- Molecular Formula: C₅H₁₂O₂
- Synonyms:
- PnP
- Ethyl Propylene Glycol Ether
- 2-Propanol, 1-ethoxy-
- EPh (in some industrial contexts)
Physical & Chemical Properties
- Appearance: Clear, colorless liquid
- Odor: Mild, ether-like
- Boiling Point: ~135°C
- Melting Point: −90°C
- Flash Point: ~48–52°C (closed cup)
- Density (20°C): ~0.90 g/cm³
- Solubility: Completely miscible with water, alcohols, and many organic solvents
- Evaporation Rate: Moderate (slower than acetone, faster than glycols)
- Viscosity: Low (~2.0 cP at 20°C)
- Vapor Pressure: ~3.5 mmHg at 20°C
- Refractive Index: 1.405–1.410
Safety & Hazard Attributes
- Hazard Class (GHS):
- Flammable Liquid, Category 3
- Eye Irritation, Category 2A
- Toxicity: Low to moderate; inhalation and prolonged skin contact may cause irritation
- Exposure Limits:
- ACGIH TLV (TWA): Not specifically established
- Use in well-ventilated areas to limit vapor buildup
Storage & Handling Attributes
- Storage Conditions: Store in cool, dry, well-ventilated area; away from heat, sparks, and open flames
- Container Type: HDPE drums, metal drums, or IBCs
- Shelf Life: Typically 12–24 months in unopened containers
- Handling Precautions: Ground and bond containers when transferring; use flame-proof equipment where applicable
- Incompatible Materials: Strong oxidizing agents, acids, alkalis
Regulatory & Compliance Attributes
- Listed on major international chemical inventories (TSCA, EINECS, REACH)
- Acceptable in food-contact coatings under specific regulatory limits (check regional guidelines)
- Not classified as a hazardous air pollutant (HAP) under U.S. Clean Air Act
- May contribute to VOC content in regulated formulations (regulated under CARB, SCAQMD, etc.)
Environmental & Health Impact
- Ecotoxicity: Moderate — avoid direct discharge to surface water
- Persistence: Biodegradable under aerobic conditions
- Bioaccumulation: Low potential
Carcinogenicity/Mutagenicity: Not classified as carcinogenic or mutagenic
SAFETY HANDLING PRECAUTIONS
Safety Handling Precautions
PPE Required:
- Chemical-resistant gloves (nitrile, neoprene)
- Splash goggles or safety glasses
- Flame-resistant lab coat or apron
- Vapor respirator if working in poorly ventilated areas
Handling Guidelines:
- Avoid breathing vapor or mist
- Prevent static discharge — ensure proper grounding
- Use explosion-proof ventilation or local exhaust if handling large volumes
Storage Measures:
- Store in tightly closed containers
- Keep away from ignition sources and direct sunlight
- Use nitrogen blanketing for long-term bulk storage if necessary
Hygiene Practices:
- Wash hands after handling
- Avoid eating, drinking, or smoking while using
- Clean equipment and surfaces after use
First Aid Measures
- Inhalation: Move to fresh air; seek medical attention if symptoms persist
- Skin Contact: Wash thoroughly with soap and water; remove contaminated clothing
- Eye Contact: Rinse cautiously with water for 15 minutes; consult a physician if irritation continues
- Ingestion: Do not induce vomiting; rinse mouth and seek immediate medical attention
Firefighting Measures
- Fire Hazards: Flammable liquid and vapor
- Extinguishing Media: Dry chemical, CO₂, alcohol-resistant foam, or water spray
- Special Precautions: Use full protective gear and self-contained breathing apparatus (SCBA)
Decomposition Products: May produce carbon monoxide, carbon dioxide, and other irritating vapors when burned
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