Description
  • Precision cleaning fluid. Dow DOWSIL OS-30 Fluid Clear is an odorless, ozone-safe compound used for cleaning contaminated surfaces, rinsing parts after cleaning, and replacing organic fluids as carriers. It offers low surface tension, high purity, and evaporates at room temperature, leaving parts dry.
  • Composition and behavior. OS-30 belongs to the same DOWSIL OS family of volatile methylsiloxane cleaning fluids as OS-20 and OS-2. Its low surface tension helps it reach tight geometries and lift soils, while its room-temperature evaporation and high purity leave little residue behind, suiting sensitive cleaning tasks.
  • Versatility. Beyond direct cleaning, OS-30 is useful for rinsing parts after cleaning with stronger agents and for replacing organic (hydrocarbon) fluids as carriers in some industrial processes. This makes it a flexible choice where a mild, clean-evaporating fluid is preferred over more aggressive solvents.
  • Handling notes. As a volatile silicone fluid, it should be used with adequate ventilation, and disposal should follow local regulations. Review the product and Safety Data Sheets before use. The 500 mL bottle is a convenient size for smaller-scale or bench cleaning.

Recommended For

  • Cleaning contaminated surfaces
  • Rinsing parts after cleaning with stronger agents
  • Replacing organic carrier fluids
  • Precision cleaning of sensitive components
  • Bench-scale or small-volume cleaning

Product Details

  • Product type: Volatile methylsiloxane silicone cleaning fluid
  • Appearance: Clear
  • Odor: Odorless
  • Environmental note: Ozone-safe
  • Key properties: Low surface tension, high purity, room-temperature evaporation
  • Container size: 500 mL bottle

Primary Industries

  • Electronics manufacturing
  • Precision cleaning and surface preparation
  • Industrial manufacturing
  • Laboratory and bench operations

Standards and Certifications

  • Described by source as ozone-safe; no formal third-party certification stated

FAQs

What is DOWSIL OS-30 used for?

It is an odorless, ozone-safe silicone cleaning fluid used to clean contaminated surfaces, rinse parts after cleaning, and replace organic carrier fluids. With low surface tension and high purity, it lifts soils and then evaporates at room temperature, leaving parts clean and dry for the next process step.

Does OS-30 leave residue after drying?

No. OS-30 is a high-purity, volatile fluid that evaporates at room temperature, leaving surfaces dry with little residue. That clean evaporation makes it suitable for sensitive cleaning tasks. Allow adequate evaporation time before moving to bonding, coating, or the next process step.

How does OS-30 relate to OS-20 and OS-2?

OS-30 is part of the same DOWSIL OS family of volatile methylsiloxane cleaning fluids as OS-20 and OS-2. They share similar odorless, ozone-safe, low-surface-tension characteristics and are used for cleaning, rinsing, and as silicone carriers, differing mainly in their specific grade properties.

Can OS-30 be used after harsher cleaners?

Yes. Dow notes it is useful for rinsing parts after cleaning with stronger agents, taking advantage of its mild, clean-evaporating nature. This allows it to remove residues left by more aggressive solvents while leaving surfaces clean and dry, without introducing new contaminants.

How should OS-30 be handled?

As a volatile silicone fluid, OS-30 should be used with adequate ventilation, and disposal should follow local, state, and federal regulations. Always read the product and Safety Data Sheets before handling. The 500 mL bottle is a convenient size for smaller-scale or bench cleaning tasks.