Diethylene Glycol Monobutyl Ether (Butyl Carbitol)

   CAS No.: 112-34-5
   Synonyms / IUPAC Name: Diethylene glycol monobutyl ether; 2-(2-Butoxyethoxy)ethanol; Butyl Carbitol
   Molecular Formula: C₈H₁₈O₃
   Molecular Weight: 162.23 g/mol
   Appearance: Clear, colourless liquid (may appear faint yellow)
   Odor: Mild, faint solvent-type odor

Physicochemical Properties (Typical)

• Melting / Freezing Point: Approx. –68 °C
• Boiling Point: Approx. 230 – 232 °C
• Density (20 °C): ~0.95 g/cm³ (~0.955)
• Vapour Pressure: ~0.03 hPa at 25 °C
• Solubility: Miscible with water and many organic solvents
• Log Kₒw: ~0.81 – indicating low bioaccumulation potential

Purity & Quality Standards

• Typical Grade Purity: ≥ 99% for high-quality solvent use.
• Appearance: Clear, free of visible haze or particulates.
• Analytical Methods: Gas chromatography for assay; monitoring of moisture and volatiles.
• Storage & Handling: Requires sealed containers; oxidation/peroxide formation possible if exposed to air.

Applications / Uses

• High-boiling, low-volatility solvent used in coatings, inks, cleaning fluids and printing formulations.
• Solvent/coupling agent in latex paints, adhesives and textile dyeing for its hydrophilic/organic solvent duality.
• Intermediate or diluent in specialty chemical formulations requiring low volatility and good solvency.

Safety & Handling

• Hazard Characteristics: Combustible liquid; may cause eye irritation; slight skin irritation on repeated contact.
• Inhalation: Vapours may cause respiratory irritation or dizziness in high concentrations.
• Skin Contact: Prolonged exposure may cause minor irritation.
• Eye Contact: Causes serious eye irritation.
• Precautions: Use in well-ventilated areas. Wear suitable protective gloves, eye/face protection and protective clothing. Avoid ignition sources; ensure containers and equipment are grounded.
• Reactive Hazards: Avoid strong oxidising agents; may form peroxides when exposed to air and light.
• First Aid:
• Inhalation: Move to fresh air; keep at rest; seek medical attention if symptoms persist.
• Skin Contact: Remove contaminated clothing and wash thoroughly with soap and water.
• Eye Contact: Rinse carefully with water for several minutes; seek medical attention if irritation continues.
• Ingestion: Rinse mouth; do not induce vomiting; seek medical attention.

Packaging & Storage

• Packaging: Supplied in sealed solvent-compatible containers (steel drums or lined tanks) suitable for combustible liquids.
• Storage Conditions: Store in a cool (< 30 °C), dry, well-ventilated area away from direct sunlight, heat and ignition sources. Use inert blanketing for large-volume storage to minimise peroxide formation.
• Shelf Life: Typically 12–24 months under recommended conditions; inspect container for integrity and product for colour or odour changes.
• Transport: As per local regulations for combustible liquids; typically not classified as dangerous goods for transport if packaged appropriately.