Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate
CAS 6386-38-5
EC 228-985-4
Formula C18H28O3
MW 292.41 g/mol
Plastics & PolymersCoatings, Adhesives, Sealants & ElastomersLubricants & MetalworkingAutomotivePrinting & Packaging Antioxidant & Stabilizer
Description
Methyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, CAS 6386-38-5, is a hindered phenolic antioxidant commercially known as Methylox. It carries EC number 228-985-4 and the molecular formula C18H28O3. No E-code is assigned, and it is not classified as a food additive.
In polymer processing, it interrupts radical chain oxidation during high-temperature extrusion of polyolefins, preventing discoloration and molecular weight loss. In lubricant formulations, it retards oxidative degradation of base oils under thermal stress, extending service intervals. It is also used in adhesive and coating systems to protect against premature embrittlement during storage or cure.
The material is supplied as a powder or crystalline solid and is subject to REACH registration requirements within the EU. Procurement teams should confirm supplier SDS documentation and purity specifications prior to ordering. Standard packaging formats vary by supplier; bulk and drum quantities are typically available for industrial volumes.
In polymer processing, it interrupts radical chain oxidation during high-temperature extrusion of polyolefins, preventing discoloration and molecular weight loss. In lubricant formulations, it retards oxidative degradation of base oils under thermal stress, extending service intervals. It is also used in adhesive and coating systems to protect against premature embrittlement during storage or cure.
The material is supplied as a powder or crystalline solid and is subject to REACH registration requirements within the EU. Procurement teams should confirm supplier SDS documentation and purity specifications prior to ordering. Standard packaging formats vary by supplier; bulk and drum quantities are typically available for industrial volumes.
Physical Properties
| Melting Point | 66 °C |
| Boiling Point | 125-130 °C @ Press: 0.1 Torr |
| Density | 1.006±0.06 g/cm3(Predicted) |
| Color | White to Almost white |
| Form | powder to crystal |
| Water Solubility | 2.2mg/L at 20℃ |
| Refractive Index | 1.5034 |
| Log P | 4.866 (est) |
Safety & Handling (Learn More)
Warning GHS07 GHS09 GHS08
H
H302H361H373H401H411
P
P203P260P264P270P273P280P318P319P330P391P405P501P301+P317
Trade & Regulatory
| HS Code | 2918290090 |
Other Names
Methyl 3-(3,5-Ditert-Butyl-4-Hydroxyphenyl)propanoatemethyl di-t-butyl hydroxyhydrocinnamateMethyloxMETHYL 3,5-DI-TERT-BUTYL-4-HYDROXYHYDROCINNAMATEMETHYL 3,5-DI-TERT-BUTYL-4-HYDROXYPHENYLPROPIONATEMethyl (3,5-di-tert-butyl-4-hydroxyphenyl)propionateMethyl β-3,5-di-tert-butyl-4-hydroxyphenylpropionateMethyl 3,5-di-tert-butyl-4-hydroxy-β-phenylpropionate
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