Overview
Polyethylene glycol monobutyl ether (CAS 9004-77-7 ), commercially available as DCP 208 and Adeka Carpol M2, is a nonionic surfactant and solvent used across industrial and personal care manufacturing.
Its butyl-capped polyethylene glycol structure delivers controlled hydrophilic-lipophilic balance, making it effective for emulsification, dispersion, and surface-active cleaning applications.
In textile and leather processing, it functions as a leveling and dispersing agent, improving dye uptake uniformity and finish consistency across various substrates during the manufacturing process.
Metalworking and industrial cleaning formulators incorporate it into water-based cutting fluids and degreasers, where it solubilizes oils and facilitates rinsing without the need for aggressive solvents.
Personal care manufacturers use it as a solvent and emulsifier in rinse-off formulations, helping to disperse actives and condition processing behavior for high-quality consumer products.
In paper manufacturing, it supports surface sizing and coating formulations by improving pigment dispersion and film-forming agent compatibility, ensuring a smooth and consistent finish.
Polyethylene glycol monobutyl ether is supplied as a clear to slightly hazy liquid. It is available in technical and industrial grades, with molecular weight variants determining HLB value.
Buyers should specify chain length or equivalent grade designation when sourcing. Bulk liquid supply in drums and IBCs is standard for industrial procurement and large-scale chemical distribution.
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Physical Properties
| Melting Point | 60-61 °C |
| Boiling Point | 4.85°C[at 101 325 Pa] |
| Density | 0.99 g/mL at 25 °C(lit.) |
| Flash Point | >230 °F |
| Color | colorless to clear |
| Form | frozen liquid |
| Water Solubility | 989g/L at 20℃ |
| Vapor Pressure | 0.33Pa at 24.85℃ |
| Refractive Index | n 20/D 1.44(lit.) |
| Log P | 0.44 at 20℃ |
Safety & Handling
Danger GHS06 GHS07 GHS05 GHS08 Hazard Statements H302 Harmful if swallowed [Warning Acute toxicity, oral] H315 Causes skin irritation [Warning Skin corrosion/irritation] H319 Causes serious eye irritation [Warning Serious eye damage/eye irritation] H331 Toxic if inhaled [Danger Acute toxicity, inhalation] H227 Combustible liquid [Warning Flammable liquids] H311 Toxic in contact with skin [Danger Acute toxicity, dermal] H330 Fatal if inhaled [Danger Acute toxicity, inhalation] H336 May cause drowsiness or dizziness [Warning Specific target organ toxicity, single exposure; Narcotic effects] H361 Suspected of damaging fertility or the unborn child [Warning Reproductive toxicity] H370 Causes damage to organs [Danger Specific target organ toxicity, single exposure] H372 Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure] H335 May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation] H373 May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure] H310 Fatal in contact with skin [Danger Acute toxicity, dermal] H312 Harmful in contact with skin [Warning Acute toxicity, dermal] H332 Harmful if inhaled [Warning Acute toxicity, inhalation]
Trade & Regulatory
| Storage Class | 10 - Combustible liquids |
| WGK (Germany) | 1 |
Other Names
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Chemical Properties
- CAS Number
- 9004-77-7
- EC Number
- 500-012-0
- Mol. Weight
- 118.17
- Category
- Alcohols & Glycols