PH-155
2,6-di-tert-butylphenol derivative
Solid hindered phenol with higher molecular weight than BHT, which buys lower volatility. Used where the fluid is expected to run hot enough that BHT would simply evaporate out of the formulation.
- Physical form
- Solid
Typical values, not a specification. The binding specification is the one on the certificate of analysis issued against each batch.
- CAS number
- 41484-35-9
- EC number
- 255-392-8
Grades a formulator would benchmark PH-155 against. Naming them is not a claim of equivalence — it is where to start the comparison.
Phenolic Antioxidants
Primary low-to-mid temperature radical scavenger
Hindered phenols built on the 2,6-di-tert-butylphenol motif. They donate a hydrogen atom to peroxy radicals and are the more cost-effective half of a paired antioxidant system below ~120 °C. Liquid grades matter for cold-blend and low-viscosity fluids where a solid will not dissolve without heat.
Industrial Gear Oils
Enclosed gear drives, wind turbine gearboxes and heavy industrial reducers.
Hydraulic Fluids
Anti-wear hydraulic oils, including zinc-free and fire-resistant fluids.
Metalworking Fluids
Neat cutting oils, soluble oils, semi-synthetics and forming lubricants.
Turbine & Compressor Oils
Steam, gas and hydro turbine oils, rotary and reciprocating compressor fluids.
Rust Preventives & Quenching
Slushing oils, export packaging fluids, quench oils and heat-treatment fluids.
A full technical data sheet, safety data sheet in the language of the receiving country, REACH status statement and SVHC declaration are issued with every enquiry for PH-155. Certificates of analysis accompany each consignment and retained samples are held for the full shelf life.
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