Non-staining
Keeps white and light-colored rubber and latex goods clean.
SUNNOX® 425
Antioxidante 425 Supplier for Rubber and Latex
SUNNOX® 425 is a non-staining bisphenol antioxidant for natural and synthetic rubber, latex and adhesives, protecting light-colored products against heat and oxidation.
CAS 88-24-4 · Bisphenol · Primary antioxidant
- Lote COA com cada remessa
- Amostras para seus testes
- Suporte técnico para seu teste
Visão geral do produto & principais benefícios
Antioxidante 425 (2,2'-methylenebis(4-ethyl-6-tert-butylphenol)) is closely related to 2246 and is widely used in latex and light-colored rubber articles where staining and discoloration are not acceptable.
Latex use
Widely used in latex articles.
Heat-aging protection
Protects against heat and oxygen in processing and service.
Especificações técnicas
| Parâmetro | Valor típico |
|---|---|
| Nome do produto | Antioxidante 425 |
| Marca | SUNNOX® 425 |
| Nº CAS. | 88-24-4 |
| Nome Químico | 2,2'-Methylenebis(4-ethyl-6-tert-butylphenol) |
| Fórmula Molecular | C25H36O2 |
| Peso molecular | 368.6 |
| Aparência | Pó branco |
| Ponto de fusão | ≥119 °C |
| Volatile Matter | ≤0,5% |
| Cinzas | ≤0,1% |
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 425 is normally used and what to confirm before your trial.
Latex Products
Non-staining antioxidant for latex gloves, foam and dipped goods.
Verifique antes do teste
- Latex type
- Dispersion method
- Color requirement
Natural & Synthetic Rubber
Typically 0.5–1.5 phr in light-colored rubber goods.
Verifique antes do teste
- Rubber type
- Cure system
- Heat-aging requirement
Adesivos
Antioxidant for rubber-based adhesives.
Verifique antes do teste
- Base polymer
- Temperatura de processamento
- Color target
Seleção & comparação
Selecting an Antioxidant System
| Sua necessidade | O que geralmente funciona |
|---|---|
| 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, fibra, low-melting compounding | Lower-melting phenolic (1076) for easy dispersion |
| Repeated processing / conteúdo reciclado | 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 | Envie seu TDS ou COA atual; we match on the parameters you approve |
Antioxidant Comparison
Swipe or scroll horizontally to see all columns →
| Produto | Tipo | Mol. peso | Ponto de fusão | Main job | Typical starting level* |
|---|---|---|---|---|---|
| SUNNOX® 425 | Bisphenol · primary | 368.6 | ≥119 °C | Non-staining rubber and latex antioxidant | 0.5–1.5 phr in rubber |
| SUNNOX® 2246 | Bisphenol · primary | 340.5 | ≥125 °C | Non-staining rubber and plastic antioxidant | 0.5–1.5 phr in rubber |
| SUNNOX®BBMC | Bisphenol · primary | 382.6 | ≥209 °C | Non-discoloring rubber and adhesive antioxidant | 0.2–1.0% |
| 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% |
*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.
Embalagem & armazenar
Embalagem
25 kg net bags or cartons with a PE inner liner. Palletized; private-label packing on request.
Armazenar
Keep sealed in a cool, seco, ventilated place away from heat and direct sun. See the SDS for full handling details.
Tempo de espera & terms
Typically 3–15 business days from order confirmation, depending on quantity. FOB, CIF or DAP to major ports.
Do primeiro e-mail ao fornecimento aprovado
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 os números que importam
For powders: ensaio, 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.
Bloqueie os termos de fornecimento
Agree packaging, monthly volume, destination port and required documents up front. Um número CAS correspondente por si só não qualifica uma nova fonte; run your trial and keep the approved lot COA as the reference.
Diga-nos sua necessidade. Nós combinamos a nota.
Start with your polymer, quantidade e destino. Add your current grade or specification and we will quote against it.
| Informação | Exemplo |
|---|---|
| Polymer / Material | PP, Educação Física, abdômen, composto, lote mestre |
| Aplicativo | Moldagem por injeção, extrusão, filme, fibra |
| Aditivo atual | Classe ou fornecedor que você usa hoje |
| Especificação necessária | Your TDS, COA or key limits |
| Quantidade | Trial order / monthly / volume anual |
| Embalagem | Standard 25 kg or specific requirement |
| Destino | País e porto |
| Documentos necessários | COA, FDS, ALCANÇAR, food-contact statement |
Produtos relacionados
SUNNOX®BBMC
Non-discoloring bisphenol antioxidant for rubber, adhesives and polyolefins.
Ver produto →SUNNOX® BHT
Low-cost, low-MW phenolic antioxidant for oils, fuels, rubber and general-purpose polymers.
Ver produto →SUNNOX® 1076
Low-melting hindered phenolic primary antioxidant, easy to disperse in film and compounding.
Ver produto →Antioxidante 425 Perguntas frequentes
425 ou 2246?
Both are non-staining bisphenols with similar performance; 425 is often specified in latex. Send your current grade and we match it.
What dosage is typical?
0.5–1.5 phr in rubber as a starting range. Confirm in your test.
Is it used in plastics?
Mainly in rubber, latex and adhesives; for plastics, 1010, 1076 ou 2246 are more common.
Posso obter uma amostra antes de fazer o pedido?
Sim. Diga-nos o polímero, o teste que você planeja realizar e a quantidade necessária. As amostras são enviadas com um COA para que você possa comparar o lote com o material atual.
E se um COA não corresponder à especificação acordada?
Envie-nos a especificação acordada e o COA mostrando a diferença (parâmetro, unidade e método de teste). Verificamos com o registro do lote de produção antes de você aceitar o material, e substitua ou teste novamente quando o lote estiver fora das especificações.
