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    HomeProductsBasic & Fine ChemicalsFine Chemicals4‑tert‑Octylphenol CAS 140-66-9
    • 4‑tert‑Octylphenol CAS 140-66-9
    • 4‑tert‑Octylphenol CAS 140-66-9
    • 4‑tert‑Octylphenol CAS 140-66-9

    4‑tert‑Octylphenol CAS 140-66-9

    4-tert-Octylphenol, identifiable by CAS 140-66-9, functions as a high-purity alkylphenol intermediate used primarily in the manufacture of non-ionic surfactants and phenolic resins. Chemically defined as 4-(1,1,3,3-Tetramethylbutyl)phenol, this white flaked or crystalline solid serves as the hydrophobic building block for octylphenol ethoxylates, widely employed in industrial cleaning and textile processing. The substance, often referred to as PTOP or p-tert-Octylphenol in chemical trading, acts as a key monomer for tackifying resins in rubber tire production and electrical insulating varnishes. We facilitate bulk supply of this versatile intermediate with competitive factory pricing, capable of meeting customized specifications for color (APHA) and ortho-isomer content, backed by comprehensive MSDS, TDS, COA documentation.

    • CAS: 140-66-9
    • Synonyms: 4-tert-Octylphenol, p-tert-Octylphenol, PTOP, 4-(1,1,3,3-Tetramethylbutyl)phenol
    • Einecs: 205-246-2
    • Molecular Formula: C14H22O
    • Grade: Industrial grade 99.99%
    • Package: 200kg iron drum or 50kg plastic drum packaging
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    Product Description

    Product Name:P-tercinylphenol

    Chemical formula:C14H22O

    Aliases： 4-tercinylphenol, 4-tertoctyl phenol, etc

    Molecular Weight: 206.32

    CAS accession number: 140-66-9

    EINECS accession number: 205-246-2

    Appearance: White flake crystals at room temperature

    The melting point is 83.5 °C

    Boiling point: 276°C

    Flash point: 138°C

    Density: 0.889

    Solubility: Insoluble in water, soluble in most organic solvents

    Usage: P-teroctyl phenol is a raw material and intermediate for fine chemicals, such as the synthesis of octylphenol formaldehyde resin, which is widely used in oil additives, inks, cable insulation materials, printing inks, coatings, adhesives, light stabilizers and other production fields. Synthetic nonionic surfactants are widely used in detergents, pesticide emulsifiers, textile homogenizers and other products.

    FAQ - Technical & Supply Chain

    • Q:

      Is 4-tert-Octylphenol chemically synonymous with PTOP?

      A: Yes, 4-tert-Octylphenol and the industry acronym PTOP refer to the same alkylated phenol compound identified by CAS 140-66-9, distinguishing it from linear octylphenol isomers.
    • Q:

      Is this intermediate suitable for rubber tackifier applications?

      A: 4-tert-Octylphenol is typically applied as a raw material for synthesizing oil-soluble phenolic resins, which are essential tackifiers used in the manufacture of rubber tires to improve layer adhesion.
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    Alkylphenol Phenolic Intermediate

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