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Dover Chemical DOVERPHOS 4 Trisnonylphenyl Phosphite
Categories: Other Engineering Material; Additive/Filler for Polymer

Material Notes: Doverphos 4 is trisnonylphenyl phosphite (TNPP). It is an aryl phosphite with a high molecular weight and low phosphorus content. It is an effective liquid phosphite heat stabilizer for a wide variety of applications, including: polyolefin, acrylics, adhesives, elastomers, nylon, polycarbonate, polyurethanes, polystyrene, PVC, coatings, ABS, and polyethylene terephthalate. Typical use levels range from 0.05 to 3.00% for most applications.

Information provided by DoverChem

Key Words: CAS# 26523-78-4
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Physical PropertiesOriginal ValueComments
Specific Gravity 0.980 - 0.992 g/cc
@Temperature 25.0 °C
ASTM D1298
Density 8.20 lb/gal
Viscosity 4600 cP
@Temperature 25.0 °C
Molecular Weight 688 g/mol
ASTM Color <= 75APHA; ASTM D1209
 
Chemical PropertiesOriginal ValueComments
Total Acid Number <= 0.10[mgKOH/gm]; ASTM D3242
 
Optical PropertiesOriginal ValueComments
Refractive Index <= 1.528
@Temperature 25.0 °C
ASTM D1218
 
Component Elements PropertiesOriginal ValueComments
Phosphorus, P 4.3 %
 
Descriptive Properties
AppearanceClear liquid
NP, %<4Free Nonylphenol, DP260

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WDOVER025 / 217644

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