Hostanox® P-EPQ® powder

Hostanox® P-EPQ powder is a highly efficient phosphorus based secondary antioxidant, which reduces the thermo-oxidative degradation of polymers and the development of undesired color (yellowing) during processing. The main advantages of Hostanox® P-EPQ powder are its high thermal stability and high solubility in polymeric materials as well as its broad compatibility in coating polymers.

Principal: Clariant Additives

Functions: Secondary Antioxidant, Stabilizer, Stabilizer

Chemical Family: Aryl Phosphonites

Compatible Polymers & Resins: Acrylonitrile Butadiene Styrene (ABS), High-Density Polyethylene (HDPE), Linear Low Density Polyethylene (LLDPE) , Polyamides, Polybutene, Polybutylene Terephthalate (PBT), Polycarbonates (PC), Polyesters, Polyolefins, Polypropylenes (PP), Polystyrenes (PS)

End Uses: Coil Coating, Powder Coating, Solventborne Coating

Physical Form: Powder

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Enhanced TDS

Identification & Functionality

Blend
No
CASE Ingredients Functions
Chemical Family
Chemical Name
Function
Stabilizer, Secondary Antioxidant
Plastics & Elastomers Functions
Product Code
MITM02915
Single Ingredient
Yes
Technologies
Product Families

Features & Benefits

CASE Ingredients Features
Materials Features
Product Benefits

Plastics

  • Low dosage
  • High performance in color and melt flow retention during conversion process
  • White application window allowing high processing temperatures
  • Low softening temperature providing early stage protection in extrusion processes
  • Significant contribution to dyne level retention
  • High solubility in polymer virtually no haze or blooming
  • High contribution to thermal stability of filled Polyolefin and engineering plastic compounds
  • Higher contribution to Polypropylene clarity compared to other processing stablizers
  • Low plate out, low die buildup
  • Preventing formation of char and specks

Coatings

  • High contribution to termal yellowing reduction during processing and long term heat stability
  • Inhibit discoloration due to Stoving/NOx
  • Reduce Gas Fading

Applications & Uses

Coating End Applications
Compatible Polymers & Resins
Markets
Applications
Product Applications

Application Coatings

Hostanox® P-EPQ powder is recommended especially for the applications where polymers and/or binders are cured at elevated temperature and need thermo-stabilization, e.g. powder coatings, coil coatings and specific solventborne coatings (automotive for ex.).

Application Plastics

  • Hostanox® P-EPQ powder is suitable for most kinds of thermoplastic polymers.
  • It is recommended especially for the stabilization of polyolefins (LLDPE, HDPE, PP), ABS, PS, polybutylene, PBT, PC, PA, thermoplastic polyester, nitrile barrier resins, etc.

Properties

Physical Form

Packaging & Availability

Packaging Type
Packaging Information
  • Cardboard box 200 kg with 20 PE bags of 10 kg
  • Cardboard box 400 kg with 20 Alu bags of 20 kg
  • Cardboard box 480 kg with 24 PE bags of 20 kg
  • Delivery form: Powder. The product is also available in other physical form.

Storage & Handling

Storage Conditions
  • The product should be stored dry and at room temperatures and processed immediately after opening the packaging.
  • Minimum shelf life is two years from date of shipping when properly stored in the original sealed packaging.

Other

2,4-di-tert.-butyl-phenol Content
max. 2.5 %
Acid Value
max. 5.0 mg KOH/g
Appearance
White to slightly yellowish powder
Boiling Point (SDS)
min. 280.0 °C
Bulk Density (SDS)
530.0 kg/m³
Burning Number (SDS)
2.0
Color (SDS)
Yellow
Decomposition Temperature (SDS)
min. 500.0 °C
Deflagration Index (SDS)
248.0 bar.m/s
Density (SDS)
1.04 g/cm³
Drop Point
100.0-110.0 °C
Drop Point (SDS)
100.0-110.0 °C
Dust Explosion Class (SDS)
ST2 Poussières explosibles
Explosive Nature (SDS)
Non explosif
Flammable Nature (SDS)
Not flammable
Item Number
Log Partition Coefficient (Log Pow) (SDS)
min. 6.0
Melting Point (SDS)
85.0-103.0 °C
Minimum Ignition Energy (SDS)
13.0-30.0 MJ
Moisture Content
max. 0.5 %
Oxidizing Properties (SDS)
Not classified as oxidizing
Phosphorus Content
5.4-5.9 %
Principal
Relative Density (SDS)
1.04
Shelf Life
2.0 yr
Solubility In Water (SDS)
max. 1.0 mg/L
Vapor Pressure (SDS)
max. 1.0 Pa
Viscosity (SDS)
3270.0 mPa.s
Viscosity (SDS)
386.0 mPa.s
pH (SDS)
8.0
Chemical Properties
ValueUnitsTest Method / Conditions
Acid Valuemax. 5.0 mg KOH/gmg KOH/gInternal Method
Shelf Life & Stability
ValueUnitsTest Method / Conditions
Shelf Life2.0 yryr
Physical Properties
ValueUnitsTest Method / Conditions
Drop Point1100.0-110.0 °C°CInternal Method
Moisture Contentmax. 0.5 %%Internal Method at 105°C, 2 H
Material Composition
ValueUnitsTest Method / Conditions
2,4-di-tert.-butyl-phenol Contentmax. 2.5 %%Internal Method
Phosphorus Content5.4-5.9 %%Internal Method
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Boiling Point (SDS)min. 280.0 °C°COECD 103 at 1 mmHg, room temperature
Bulk Density (SDS)530.0 kg/m³kg/m³at 20°C
Burning Number (SDS)2.0-at 20 - 100°C
Decomposition Temperature (SDS)min. 500.0 °C°COECD 113 Vitesse d'échauffement: 3 K/min
Deflagration Index (SDS)248.0 bar.m/sbar.m/sVDI 2263
Density (SDS)1.04 g/cm³g/cm³OECD 109 at 20°C
Drop Point (SDS)100.0-110.0 °C°C
Log Partition Coefficient (Log Pow) (SDS)min. 6.0-OECD 117 at 25°C, n-octanol/eau
Melting Point (SDS)85.0-103.0 °C°COECD 102
Minimum Ignition Energy (SDS)13.0-30.0 MJMJModified Hartmann tube with inductive electric resistance
Relative Density (SDS)1.04-OECD 109 at 20°C, 1,013 hPa
Solubility In Water (SDS)max. 1.0 mg/Lmg/LOECD 105 at 20°C, env. 1,013 hPa, pH: 8
Vapor Pressure (SDS)max. 1.0 PaPaOECD 104 At 25°C
Viscosity (SDS)3270.0 mPa.smPa.sat 130°C
Viscosity (SDS)386.0 mPa.smPa.sat 150°C
pH (SDS)8.0-OECD 105 at 20°C