Molekula
Antioxidant / 2,2-Methylene-bis-(4-methyl-6-tert-butylphenol) - DEF STAN
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
2,2-Methylene-bis-(4-methyl-6-tert-butylphenol) (CAS 119-47-1) is a high-performance sterically hindered phenolic antioxidant used to stabilize polymers, fuels, lubricants, and adhesives against oxidative degradation. It meets DEF STAN 91-90 specifications for defense and aerospace applications, ensuring long-term material integrity under extreme conditions. This chemical has a molecular formula of CH2[C6H2[C(CH3)3)(CH3)OH]2 and a molecular weight of 340.50 g/mol. It is stored at ambient temperatures but requires careful handling due to its Danger classification (H360: may damage fertility or the unborn child; H413: may cause long lasting harmful effects to aquatic life). Full SDS and technical data sheets are provided on request. Molekula supplies 2,2-Methylene-bis-(4-methyl-6-tert-butylphenol) from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White powder |
| Melting Point | 125.0 - 130.0°C |
| pH | 4.5 - 7.5 (5% aq.) |
| Specification | DEF STAN 68-198/1 |
| Assay (GC) | ≥ 97.0% (Area) |
| Volatile Matter | ≤ 1.0% (103 ± 2°C) |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90037520 |
| CAS Number | 119-47-1 |
| Molecular Formula | CH2[C6H2[C(CH3)3](CH3)OH]2 |
| Molecular Weight | 340.50 |
| SMILES | OC=1C(=CC(=CC1C(C)(C)C)C)CC2=CC(=CC(=C2O)C(C)(C)C)C |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 29072905 |
| Tariff Code | 2907290090 |
Safety & GHS
-
Serious Health Hazard
GHS08
-
Hazardous to the Environment
GHS09
Hazard statements
- H360 May damage fertility or the unborn child
- H413 May cause long lasting harmful effects to aquatic life
Precautionary statements
- P263 Avoid contact during pregnancy/while nursing
- P264 Wash thoroughly after handling
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P308+313 IF exposed or concerned: Get medical advice/attention
- P501 Dispose of contents/container to an approved waste disposal plant
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is 2,2-Methylene-bis-(4-methyl-6-tert-butylphenol) (DEF STAN) used for?
This antioxidant is primarily used in rubber, plastics, and petroleum products to prevent oxidation and degradation during processing and service life.
What is the chemical formula and molecular weight of this product?
The formula is CH₂[C₆H₂(C(CH₃)₃)(CH₃)OH]₂, and the molecular weight is 340.50 g/mol.
How should this product be stored?
Store at ambient temperature in a cool, dry place, away from direct sunlight and incompatible materials.
What grade or specification does Molekula supply for this product?
Molekula supplies this product in compliance with DEF STAN 91-91 (Type 1) specifications for defense and aerospace applications.
Can Molekula supply this antioxidant in bulk quantities?
Yes, Molekula can supply this product in bulk, with quantities tailored to customer requirements.
What documentation comes with an order of this product?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and a DEF STAN compliance certificate where applicable.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.