Akrochem Weston™ 398T Antioxidant

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Akrochem Weston™ 398T Antioxidant
Categories:	Other Engineering Material
Material Notes:	Product Description: Weston™ 398T phosphate is a versatile phosphate stabilizer which is useful in a large number of polymers such as HDPE, LLDPE, SBR, ABS, PVC and others. Features: Low color and low nonylphenol content Improves color and processing stability during recovery, drying, compounding, processing and end use Synergism is realized when this product is combined with other stabilizers such as hindered phenols. May be added alone or in combination with the monomers and/or in antioxidant emulsions during recovery and/or during compounding Application: Weston™ 398T phosphite is a versatile liquid phosphite stabilizer which improves color and processing stability as well as end use of a variety of polymers such as HDPE, LLDPE, SBR, ABS, PVC and others. CAS No: 26523-78-4 Information provided by Akrochem Corporation
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Physical Properties	Metric	English	Comments

Specific Gravity	0.980 - 0.992 g/cc	0.980 - 0.992 g/cc
Viscosity	250 cP @Temperature 60.0 °C	250 cP @Temperature 140 °F
Molecular Weight	688 g/mol	688 g/mol
Vapor Pressure	<= 0.00800 bar @Temperature 245 °C	<= 6.00 torr @Temperature 473 °F

Chemical Properties	Metric	English	Comments
Acid Value	<= 0.25	<= 0.25	[mg KOH/g]

Thermal Properties	Metric	English	Comments
Specific Heat Capacity	1.67 J/g-°C	0.399 BTU/lb-°F
Thermal Conductivity	0.126 W/m-K	0.870 BTU-in/hr-ft²-°F
Flash Point	196 °C	385 °F	Pensky-Martens Closed Cup

Optical Properties	Metric	English	Comments
Refractive Index	1.525 - 1.528	1.525 - 1.528

Component Elements Properties	Metric	English	Comments
Phosphorus, P	4.1 - 4.5 %	4.1 - 4.5 %

Descriptive Properties
Appearance	Clear liquid
Color	<75		Pt - Co
Content	<0.5%		Free Nonylphenol
	<25 ppm		Chlorine
	<50 ppm		Free Phenol

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PAKZCH514 / 315432

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