Antioxidant 1520 L
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Product Description
Antioxidant 1520 L
Chemical Name: 4,6-Bis(octylthiomethyl)-o-cresol
Structural formula:
Molecular Formula: C25H44OS2
CAS number: 110553-27-0
Molecular Weight: 424.7 g/mol
Characterization
Antioxidant 1520 L is a multifunctional liquid phenolic antioxidant for organic substrates such as elastomers, plastics, adhesives, sealants, oils and lubricants. It effectively protects the substrate against thermooxidative
degradation during processing and long-term heat aging.
Antioxidant 1520 L is non-staining, non-discoloring, low in volatility, and stable to light and heat.
Antioxidant 1520 L is specially recommended for emulsion and solution polymerized elastomers, such as BR, SBR, NBR, SBS and others.
Physical properties
Flash point > 200 °C
Vapor pressure (25 °C) 2 E-5 Pa
Specific gravity (20 °C) 0.98 g/ml
Dynamic viscosity (20 °C) 85 – 90 mPa.s
Solubility (20 °C) g/100 g solution
Acetone > 50
Chloroforme > 50
Ethanole > 50
Ethyl acetate > 50
n-Hexane > 50
Methanol > 50
Methylene chloride > 50
Toluene > 50
Water < 0.01
Specifications
Appearance: White crystal or Pale and transparent liquid
Purity: 98% Min
Transmittance 425 nm: 95% Min
Transmittance 500 nm: 97% Min
Dissolved clarification: Clear
Density, 20℃: 0.975-0.979
Melting point： 20℃
Features/benefits
Antioxidant 1520 L is unique in its ability to provide both processing and long-term heat aging stability used alone, at low levels and without costabilizers. Where necessary Antioxidant 1520 L can be used with other additives such as secondary antioxidants, benzofuranone, light stabilizers and other functional stabilizers.
The effectiveness of these products in a wide range of elastomers coupled with extensive food contact approvals makes Antioxidant 1520 L an excellent choice where consolidation of antioxidant systems is desirable. In addition, the liquid, low viscosity nature of Antioxidant 1520 L makes bulk delivery and storage very convenient.
Applications
Antioxidant is an effective thermooxidative stabilizer in a wide range of solution polymerized, emulsion polymerized and thermoplastic elastomers including: BR, SBR, NBR, IR, SBS, and SIS as well as natural rubber. The antioxidant is effective both as a raw elastomer and compound stabilizer. It is also effective in various adhesive and sealant applications and latex applications.
Antioxidant 1520 L is not recommended for odor sensitive hot melt adhesives or their raw materials.
Guidelines for use
The normal usage levels for Antioxidant 1520 L range between 0.05 % and 0.3 % . For special applications and, de-pending on substrate, manufacturing process and performance requirements, the optimal concentration may be as high as 1.0 % or even more .
Extensive performance data for Antioxidant 1520 L in various polymers and applications are available on request.
Storage
Stored in a dry, light-proof indoor warehouse to prevent moisture.
During storage, transportation and loading and unloading of this product, avoid strong collisions; avoid rain; avoid direct sunlight; ensure that the product is dry and the packaging is not damaged or contaminated by other items; do not mix or store with toxic or harmful items.
The storage period of this product is within 12 months from the date of production. It is recommended that users do not add excessive amounts or use it in violation of regulations.
Packing
200Kg/Drum.
Health & Safety
Antioxidant 1520 L exhibits a very low order of oral toxicity and does not present any abnormal problems in its handling or general use .
Detailed information on handling and any precautions to be observed in the use of the product(s) described in this leaflet can be found in our relevant health and safety information sheet.