Primary and secondary antioxidants from one supplier.
1076, 1010, 168, DLTDP and DSTDP make it easier to source a complete stabilizer package.
SUNNOX® 1076
Antioxidant 1076 Supplier for Polymer Stabilization
Antioxidant 1076 (CAS 2082-79-3) is a hindered phenolic primary antioxidant used to help protect polymers against thermal-oxidative degradation. SUNCHEM supplies it as SUNNOX® 1076, with technical data sheet and batch documentation available for supplier qualification.
CAS 2082-79-3 · Hindered phenol · Primary antioxidant
- Lot COA with every shipment
- Samples for your trials
- Technical support for your trial
Product overview & key benefits
Antioxidant 1076 is octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, a hindered phenolic antioxidant. In polymer stabilization it is classed as a primary antioxidant, meaning it reacts with radicals formed during oxidation and slows the chain reaction that degrades the polymer.
Its structure combines one hindered phenol group with a long C18 (octadecyl) chain.
The SUNNOX® 1076 technical data sheet describes good heat resistance and resistance to water extraction. It lists polyolefins, polyamide, polyester, PVC, ABS resin and petroleum products as application areas, and notes that it is often used together with DLTP (SUNNOX® DLTDP, dilauryl thiodipropionate) for a synergistic antioxidant effect.
Documentation for qualification.
A TDS for review, and a COA with every batch.
Specification-first quoting.
Send your current grade or internal specification, and we will review it against SUNNOX® 1076 before quoting.
Technical specifications
| Parameter | Specification |
|---|---|
| Product name | Antioxidant 1076 |
| Brand | SUNNOX® 1076 |
| CAS No. | 2082-79-3 |
| Chemical name | Octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate |
| Molecular formula | C35H62O3 |
| Molecular weight | 530.9 g/mol (reference value) |
| Appearance | White crystalline powder |
| Melting range | 50–55 °C |
| Content (assay) | ≥ 98.0 % |
| Volatile matter | ≤ 0.2 % |
| Ash | ≤ 0.1 % |
| Light transmittance, 425 nm (10 g / 100 ml toluene) | ≥ 97 % |
| Light transmittance, 500 nm (10 g / 100 ml toluene) | ≥ 98 % |
Specifications per the SUNNOX® 1076 technical data sheet. Every batch ships with a COA.
Applications
The polymer families below are listed in the SUNNOX® 1076 technical data sheet. Validate suitability in your own formulation and process.
PE & PP
Polyethylene and polypropylene compounds, masterbatches and finished articles where thermal-oxidative stability matters.
Check before trial
- resin grade and process (film, molding, extrusion, fiber)
- the complete stabilizer package
- trial acceptance criteria
PA & Polyester
Polyamide and polyester systems.
Check before trial
- polymer grade and moisture history
- pigments, fillers and other additives
- processing temperature
PVC & ABS
PVC and ABS resin, where 1076 forms part of a broader stabilizer and additive package.
Check before trial
- resin grade
- existing heat stabilizer or antioxidant system
- color and processing targets
Selection & comparison
Selecting an Antioxidant System
| Your requirement | What usually works |
|---|---|
| Color and melt-flow stability during extrusion or molding | Phosphite secondary antioxidant (168) with a phenolic primary |
| Long-term heat aging in service | High-MW phenolic primary (1010), often with a thioester (DLTDP / DSTDP) |
| Thin film, fiber, low-melting compounding | Lower-melting phenolic (1076) for easy dispersion |
| Repeated processing / recycled content | Raise the phosphite share in the blend and check yellowing after each pass |
| Humid storage or long transit | Hydrolysis-resistant phosphite such as 168; keep bags sealed |
| Food-contact articles | Ask us for grade-specific regulatory documents before trials. |
| Replacing an existing grade | Provide your current grade, TDS or specification for review. |
Choosing Between 1076, 1010 and 168
Swipe or scroll horizontally to see all columns →
| SUNNOX® 1076 | SUNNOX® 1010 | SUNNOX® 168 | |
|---|---|---|---|
| Chemical class | Hindered phenol | Hindered phenol | Phosphite |
| Antioxidant role | Primary | Primary | Secondary |
| Relationship to 1076 | — | Another primary antioxidant; a different molecule | Different role; commonly combined with phenolic primary antioxidants |
1076 vs 168: these two belong to different classes. 1076 is a phenolic primary antioxidant, and 168 is a phosphite secondary antioxidant. They are typically evaluated as partners in a stabilizer package, not as alternatives to each other. 1076 vs 1010: both are hindered phenolic primary antioxidants, but they are different molecules. Changing from one to the other is a formulation change and should be confirmed by trial. This comparison is for initial screening; confirm your choice against each product's TDS and your own test results.
Packaging & storage
Packaging
25 kg net bags or cartons with a PE inner liner. Palletized.
Storage
Keep sealed in a cool, dry, ventilated place away from heat and direct sun. See the SDS for full handling details.
Lead time & terms
Regular grades are usually in stock. For large volumes, lead time is confirmed in the quotation. We quote FOB and CIF.
From first email to approved supply
Define the requirement.
Record the polymer, process, service conditions and the problem you need to address. The same additive can behave differently in a different resin or additive package.
Match identity and specification, not just the CAS number.
Compare the chemical name, CAS number, physical form and every specification limit with your approved specification. Check the test conditions too. Transmittance, for example, depends on concentration and solvent.
Keep the TDS and COA separate.
The TDS sets the grade limits. A COA reports results for one batch only. Ask for the COA of the batch you will receive.
Trial before switching.
Agree on sample quantity, test method and acceptance criteria. Then confirm packaging, quantity, destination and required documents before a commercial order.
Tell us your requirement. We match the grade.
Tell us your polymer, quantity and destination. If you have a current grade or specification, include it so we can review it against SUNNOX® 1076.
| Information | Example |
|---|---|
| Polymer / material | PP, PE, compound, masterbatch |
| Application / process | Film, injection molding, extrusion, fiber |
| Current antioxidant package | Existing grade(s), if available |
| Required specification | Your TDS, COA or target limits |
| Quantity | Trial / monthly / annual |
| Packaging | Standard or specific requirement |
| Destination | Country and port |
| Documents required | TDS, COA, other documents your quality team needs |
Related products
SUNNOX® 1010
High-MW hindered phenolic primary antioxidant for long-term thermal protection with low volatility.
View product →SUNNOX® 168
Hydrolysis-resistant phosphite secondary antioxidant for color and melt-flow protection during processing.
View product →SUNNOX® DLTDP
Thioester secondary antioxidant that boosts long-term heat aging when used with a phenolic.
View product →SUNNOX® 245
Phenolic antioxidant favored for HIPS, ABS, POM and PA, with good color retention.
View product →Antioxidant 1076 FAQ
What is Antioxidant 1076 used for?
Antioxidant 1076 is a hindered phenolic primary antioxidant used to help protect polymers against thermal-oxidative degradation. The SUNNOX® 1076 technical data sheet lists polyolefins, polyamide, polyester, PVC, ABS resin and petroleum products as application areas. Suitability for a specific grade and process should be confirmed by trial.
What is the CAS number of Antioxidant 1076?
The CAS number of Antioxidant 1076 is 2082-79-3. Its chemical name is octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, and its molecular formula is C35H62O3. When comparing suppliers, match the chemical name and specification as well as the CAS number, because the CAS number alone does not confirm that two grades are interchangeable.
Is Antioxidant 1076 a primary or secondary antioxidant?
Antioxidant 1076 is a primary antioxidant. As a hindered phenol, it reacts with peroxy radicals and slows the oxidation chain reaction. Secondary antioxidants, such as phosphites and thioesters, act on hydroperoxides instead. Because the two types work at different points in the reaction, formulators often evaluate them together in one stabilizer package.
Can Antioxidant 1076 replace Antioxidant 1010?
Not automatically. Both are hindered phenolic primary antioxidants, but they are different molecules. Whether one can replace the other depends on the polymer, processing and service conditions, and on your approved formulation. Treat the change as a formulation change: compare both technical data sheets and confirm performance in a controlled trial before approval.
Can Antioxidant 1076 be used with DLTDP or 168?
Yes. 1076 is a phenolic primary antioxidant, and both DLTDP (a thioester) and 168 (a phosphite) are secondary antioxidants. The SUNNOX® 1076 technical data sheet specifically notes synergistic use with DLTDP. The right combination and addition levels depend on your polymer and process and should be established through testing.
What should I check before changing my 1076 supplier?
Start with your approved specification. Compare the chemical name, CAS number, physical form, every specification limit and the test conditions behind them. Review the supplier's technical data sheet and the COA for the batch you will receive, and ask which other documents your end use requires. Then run a controlled trial before approving the new source.
Can I get a sample before ordering?
Yes. Free samples are available for buyers evaluating the product for production use. Shipping cost is agreed case by case, and each sample comes with a COA.
