Economical
Low cost per kg and effective at low dosage.
SUNNOX® BHT
BHT Antioxidant Supplier
SUNNOX® BHT (butylated hydroxytoluene) is a low-cost phenolic antioxidant used in fuels, lubricants, rubber, plastics and many industrial products. Food, feed and pharma grades are a separate, grade-specific request.
CAS 128-37-0 · Hindered phenol · Primary antioxidant
- Lot COA with every shipment
- Samples for your trials
- Technical support for your trial
Product overview & key benefits
BHT (2,6-di-tert-butyl-4-methylphenol) is one of the most widely used antioxidants. Its low molecular weight (220.4) makes it effective and economical, but also volatile, so it suits low-temperature applications, liquids and in-process stabilization rather than long-term protection of plastics processed at high temperature.
Versatile
Used in oils, fuels, rubber, adhesives, plastics and polymer production.
Easy to dissolve
Soluble in oils and most organic solvents.
Technical specifications
| Parameter | Typical value |
|---|---|
| Product Name | Antioxidant BHT |
| Brand | SUNNOX® BHT |
| CAS No. | 128-37-0 |
| Chemical Name | 2,6-Di-tert-butyl-4-methylphenol |
| Molecular Formula | C15H24O |
| Molecular Weight | 220.4 |
| Appearance | White crystalline powder or granule |
| Assay | ≥99.0% |
| Melting Point | ≥69 °C |
| Ash | ≤0.01% |
Typical specification. Every shipment is supplied with a batch COA; the limits that apply to your order are confirmed in the quotation and contract.
Applications by Polymer
Pick an application to see how BHT is normally used and what to confirm before your trial.
Fuels, Lubricants & Oils
Prevents oxidation and gum formation in fuels, oils and greases.
Check before trial
- Base oil or fuel
- Required dosage and test
- Grade requirements
Rubber & Polymer Production
In-process stabilizer for synthetic rubber and polymer production.
Check before trial
- Polymer type and stage
- Storage conditions
- Color requirements
Adhesives, Coatings & Other Products
General antioxidant for adhesives, inks and coatings.
Check before trial
- System type
- Processing temperature
- Regulatory requirements
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 for the grade-specific food-contact statement before trials |
| Replacing an existing grade | Send your current TDS or COA; we match on the parameters you approve |
Antioxidant Comparison
Swipe or scroll horizontally to see all columns →
| Product | Type | Mol. weight | Melting point | Main job | Typical starting level* |
|---|---|---|---|---|---|
| SUNNOX® BHT | Hindered phenol · primary | 220.4 | ≥69 °C | Low-cost general antioxidant | 0.01–0.5% |
| SUNNOX® 1076 | Hindered phenol · primary | 530.9 | 50–55 °C | Long-term protection, easy dispersion | 0.05–0.3% |
| SUNNOX® 1010 | Hindered phenol · primary | 1177.6 | 110–125 °C | Long-term thermal protection | 0.05–0.3% |
| SUNNOX® 2246 | Bisphenol · primary | 340.5 | ≥125 °C | Non-staining rubber and plastic antioxidant | 0.5–1.5 phr in rubber |
| SUNNOX® 1135 | Hindered phenol · liquid | ~390 | Liquid | Polyols, PU foam, PVC, adhesives | 0.1–0.5% |
*Starting points for trials, not fixed recommendations. The right level depends on resin, catalyst residue, processing temperature and service life. Primary and secondary antioxidants do different jobs and are not interchangeable.
Packaging & storage
Packaging
25 kg net bags or cartons with a PE inner liner. Palletized; private-label packing on request.
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
Typically 3–15 business days from order confirmation, depending on quantity. FOB, CIF or DAP to major ports.
From first email to approved supply
Name the failure you want to prevent
Yellowing or melt-flow change during processing points to the phosphite share; embrittlement or cracking after months in service points to the phenolic and thioester share. Note recycled content and the number of extrusion passes.
Start from a proven blend
Most polyolefin packages start from a phenolic primary plus a phosphite secondary, then adjust. Send your current package and we suggest a starting blend for the trial instead of changing several variables at once.
Compare the numbers that matter
For powders: assay, melting range, volatiles and light transmittance at 425/500 nm (a direct read on color). Ask for the same parameters on our COA that appear on your incoming-inspection sheet.
Lock in supply terms
Agree packaging, monthly volume, destination port and required documents up front. A matching CAS number alone does not qualify a new source; run your trial and keep the approved lot COA as the reference.
Tell us your requirement. We match the grade.
Start with your polymer, quantity and destination. Add your current grade or specification and we will quote against it.
| Information | Example |
|---|---|
| Polymer / Material | PP, PE, ABS, compound, masterbatch |
| Application | Injection molding, extrusion, film, fiber |
| Current additive | Grade or supplier you use today |
| Required specification | Your TDS, COA or key limits |
| Quantity | Trial order / monthly / annual volume |
| Packaging | Standard 25 kg or specific requirement |
| Destination | Country and port |
| Documents needed | COA, SDS, REACH, food-contact statement |
Related products
SUNNOX® 1076
Low-melting hindered phenolic primary antioxidant, easy to disperse in film and compounding.
View product →SUNNOX® 1010
High-MW hindered phenolic primary antioxidant for long-term thermal protection with low volatility.
View product →SUNNOX® 1135
Liquid phenolic antioxidant for polyols, PU foam, PVC and adhesives; easy to meter.
View product →Antioxidant BHT FAQ
Is this BHT food grade?
Food, feed and pharma grades are separate products with their own specifications and certificates. Tell us the end use and we quote the right grade.
Why not use BHT in all plastics?
Its low molecular weight makes it volatile at high processing temperatures, so higher-MW phenolics such as 1010 or 1076 are preferred for long-term protection.
What dosage is typical?
Very application-specific: from about 0.01% in fuels to 0.5% in some polymers. Tell us the application.
Can I get a sample before ordering?
Yes. Tell us the polymer, the test you plan to run and the quantity you need. Samples ship with a COA so you can compare the lot against your current material.
What if a COA does not match our agreed specification?
Send us the agreed specification and the COA showing the difference (parameter, unit and test method). We check it with the production batch record before you accept the material, and replace or re-test where the lot is out of specification.
