TECHNICAL DATA SHEET SINANOX® 168 (Hydrolytically Stable Phosphite Processing Stabilizer (Secondary Antioxidant))
Chemical Name: Tris(2,4-ditert-butylphenyl) phosphite
CAS No.: 31570-04-4 MF: C42H63O3P
MW： 646.94
Molecular structure：
SINANOX® 168 is a white, powdered phenolic primary antioxidant.It exhibits excellent compatibility with polymers, is non-staining, non-discoloring, and has low volatility. It shows good synergistic effects when used with thioester antioxidants (e.g., DLTDP, DSTDP) and UV absorbers. It is low in toxicity and approved for use in food-contact materials.
Item | Specification |
Appearance | White crystalline powder |
Melting Range | 183.0 - 187.0 °C |
Solubility | Clear |
Volatiles Content | ≤ 0.3 % |
Transmittance (425 nm) | ≥ 98 % |
Transmittance (500 nm) | ≥ 98 % |
Content | ≥ 99.0 % |
2,4-Di-tert-butylphenyl Content | ≤ 0.30 % |
Hydrolysis Resistance | Qualified / Pass |
SINANOX® 168 is used as a processing stabilizer in combination with primary antioxidants for:
Polymers: Polypropylene (PP), Polyethylene (PE), Polystyrene (PS), Polyamide (Nylon).
Typical Usage Level: 0.05% - 0.5%
20kgs,25kgs/bag or Carton.
Being kept in dry, clean warehouse with well ventilation.
Avoid exposing to light and heating.
Protecting the product from leakage, rain and insolation during transportation.
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