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TCP – Tricresyl Phosphate (industrial)

Lubricant/coatings • handle with care

Aryl phosphate: tricresyl phosphate (TCP) Applications: lubricants • coatings • specialty plasticizer Industrial supply • low‑ortho options Not for food‑/toy/cosmetic use
CAS
1330‑78‑5 (isomeric mixture)
Formula / MW
C21H21O4P • ≈ 368.36 g/mol
Appearance
clear, colorless to pale amber liquid
Density (25 °C)
≈ 1.16–1.19 g/cm³
Viscosity (25 °C)
≈ 60–90 mPa·s
Acid value
low; grade‑dependent
TCP is an aryl phosphate used as an antiwear/extreme‑pressure additive and specialty plasticizer/flame‑retardant in coatings. Some ortho‑substituted isomers (e.g., TOCP) are associated with neurotoxicity; commercial TCP isomers are managed to limit ortho content. Handle with care and follow the SDS.
Parameter Typical Spec
Assay (TCP) ≥ 99.0% ≥ 98.5%
Acid value ≤ 0.20 mg KOH/g ≤ 0.30 mg KOH/g
Water ≤ 0.10% ≤ 0.20%
Color (APHA) ≤ 80 ≤ 150
Chlorine (as Cl) ≤ 100 ppm ≤ 200 ppm
Odor characteristic, mild
Applications Packaging Storage & Handling
• Antiwear/extreme‑pressure additive for lubricants.
• Flame‑retardant plasticizer in specialty coatings/adhesives.
• Other industrial uses where allowed by law and SDS.
• 200 kg coated steel drums; 1,000 kg IBCs.
• 20–25 kg pails for sampling/R&D.
• Custom packaging and nitrogen blanketing on request.
• Store cool, dry; protect from light.
• Keep containers tightly closed; use closed transfers.
• Maintain compliance records (end‑use, region, Σ‑o‑TCP spec if applicable).
Specs are representative; shipped material conforms to the lot COA. We do not supply TCP for food‑contact, cosmetics, or toys/childcare. Provide your end‑use, jurisdiction, and any Σ‑o‑TCP requirements so we can match the correct grade and documentation.

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