Poly(propylene glycol) monobutyl ether
Poly(propylene glycol) monobutyl ether (CAS: 9003-13-8), with the linear formula CH3(CH2)3[OCH2CH(CH3)]nOH and an average molecular weight of approximately 340 g/mol, is a versatile hydrophobic polymer. It functions effectively as a solvent, plasticizer, and foam control agent. Its properties also lend themselves to applications in hydraulic fluids, metalworking fluids, and heat transfer systems, showcasing its utility across various industrial sectors.
![Poly(propylene glycol) monobutyl ether (CH3(CH2)3[OCH2CH(CH3)]nOH) — chemical structure, CAS 9003-13-8; Materials Science, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F9003-13-8.png&w=3840&q=75)
Industrial Fluids
Used in the formulation of hydraulic fluids, metalworking fluids, and lubricants due to its lubricating and solvent properties. It also serves as a component in heat transfer fluids.
Solvents and Plasticizers
Functions as an effective solvent for various applications and acts as a plasticizer. It is also utilised as a solder assist fluid in certain processes.
Foam Control
Incorporated as a foam control agent in various industrial processes where foam generation needs to be suppressed.
Quenchants
Applicable as a quenching medium in metal treatment processes, utilising its thermal properties.
| Linear formula | CH3(CH2)3[OCH2CH(CH3)]nOH |
|---|---|
| Boiling point | >200 °C(lit.) |
| Density | 0.96 g/mL at 25 °C |
| Refractive index | n20/D 1.44 |
| Viscosity | 9.6-12.1 cSt(40 °C) |
| Application | Hydraulic fluids, metal working fluids and lubricants, heat transfer fluids, solder assist fluids, quenchants, lubricants, solvents, plasticizers and foam control agents. |

Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
Precautionary statements
- P305IF IN EYES
| Protective equipment | Eyeshields, Gloves, half-mask respirator (EU), half-mask respirator (US), multi-purpose combination respirator cartridge (US) |
|---|---|
| Flash point | 140 °C / 284 °F |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-36/38 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Mol Wt | average Mn ~340 |
|---|---|
| Transition Temp | pour point −57 °C |
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Poly(propylene glycol) monobutyl ether used for?
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Poly(propylene glycol) monobutyl ether is used in hydraulic fluids, metalworking fluids, lubricants, heat transfer fluids, solder assist fluids, quenchants, solvents, plasticizers, and foam control agents.
What is the CAS number and formula for Poly(propylene glycol) monobutyl ether?
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The CAS number is 9003-13-8 and the linear formula is CH3(CH2)3[OCH2CH(CH3)]nOH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this product. The specific grade and purity depend on the batch available. We do not represent this product as USP, BP, or EP grade. Please contact us for current specifications.
How should Poly(propylene glycol) monobutyl ether be handled safely?
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Handle with appropriate personal protective equipment, including eyeshields and gloves. Ensure adequate ventilation. Refer to the Safety Data Sheet for detailed hazard information (H302, H315, H319).
Is Poly(propylene glycol) monobutyl ether a controlled substance?
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Based on the provided data, Poly(propylene glycol) monobutyl ether (CAS: 9003-13-8) is not listed as a controlled substance.
How is Poly(propylene glycol) monobutyl ether shipped and exported?
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Tech Serve Solutions is a global supplier and exporter of fine chemicals and reagents, equipped to handle international shipping and export requirements for products like Poly(propylene glycol) monobutyl ether.
How can I request a sample or quote for Poly(propylene glycol) monobutyl ether?
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To request a sample or a quote, please contact our sales department through the website or by phone, providing your specific requirements and shipping details.
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