Two reactive handles
The C=C bond copolymerizes and the anhydride ring esterifies, so one raw material serves UPR, alquídico, rosin and copolymer chemistry.
MA
Anidrido Maleico (MA) Supplier from China
Anidrido maleico (MA) is the reactive building block for unsaturated polyester resins, alkyd resins, maleic rosin and styrene–maleic anhydride copolymers, and an intermediate for agrochemicals such as malathion. SUNCHEM supplies MA to resin, coating and synthesis users with a batch COA on every shipment.
CAS 108-31-6 · C₄H₂O₃ · 2,5-Furandione
- Lote COA com cada remessa
- Amostras para seus testes
- Suporte técnico para seu teste
Visão geral do produto & principais benefícios
Maleic anhydride combines a reactive double bond with an anhydride group, so it can both copolymerize and esterify. In unsaturated polyester resin (UPR) it supplies the unsaturation that styrene later crosslinks; in alkyds, maleic rosin and coatings it adds acid functionality; with styrene it forms SMA copolymers. It is also the starting point for maleic and fumaric acid, succinic and tetrahydrophthalic anhydride, anidrido polimaleico, and pesticides such as malathion.
For resin makers, pureza, color and free maleic acid are the numbers that decide resin color and reactivity.
Sets resin reactivity
The MA share in a UPR recipe controls how much unsaturation styrene can crosslink, and with it the cured hardness and heat resistance.
Especificado em seus termos
Citamos contra sua pureza, color and maleic-acid limits and send the batch COA for each lot.
Especificações técnicas
| Parâmetro | Valor típico |
|---|---|
| Nome do produto | Anidrido Maleico (MA) |
| Sinônimos | 2,5-Furandione; cis-butenedioic anhydride |
| Nº CAS. | 108-31-6 |
| CE Não. | 203-571-6 |
| Fórmula molecular | C₄H₂O₃ |
| Peso molecular | 98.06 |
| Aparência | Sólido branco (flakes, briquettes or pastilles) |
Pureza, cor, free maleic acid and ash limits depend on the producer grade and are stated on the TDS and batch COA; os limites do seu pedido estão confirmados na cotação e no contrato.
Aplicações por Indústria
Where maleic anhydride is used, e o que confirmar antes de trocar de fornecimento.
Unsaturated polyester resins
The largest use. MA is esterified with glycols, often alongside phthalic or isophthalic anhydride, to give the unsaturated backbone that styrene crosslinks in FRP, gelcoats, artificial stone and putties.
Verifique antes do teste
- Resin type (ortho, iso, DCPD) and color target
- Purity and free maleic-acid limits
- Delivery form and monthly volume
Alkyd resins, Rosina malic & revestimentos
Adds acid functionality to alkyd resins, and reacts with rosin to make maleic rosin for printing inks, paper size and coatings.
Verifique antes do teste
- Resin or ink type
- Color target
- Bag size that suits your charging
SMA copolymers & aditivos de polímero
Copolymerized with styrene to make SMA resins, polymerized to polymaleic anhydride for water treatment, and grafted onto polyolefins to make compatibilizers.
Verifique antes do teste
- Polymer route and initiator system
- Purity required for your polymer grade
- Sample size for a pilot run
Agrochemical & chemical intermediates
An intermediate for malathion and other agrochemicals, and for maleic acid, ácido fumárico, succinic anhydride and tetrahydrophthalic anhydride.
Verifique antes do teste
- Synthesis route and impurity limits
- Documents your QA team needs
- Annual volume
Seleção & comparação
Choosing the right MA grade
| Sua necessidade | O que geralmente funciona |
|---|---|
| General-purpose UPR and alkyd resins | Standard industrial-grade MA |
| Light-colored resins and gelcoats | Specify low color and free maleic-acid limits |
| Bagged charging into batch reactors | Solid MA — flakes, briquettes or pastilles |
| Substituindo um fornecedor existente | Envie seu TDS ou COA atual; cotamos de acordo com os parâmetros que você aprova |
Embalagem & armazenar
Embalagem
Pack size depends on the form (flakes, briquettes or pastilles). Tell us your bag size and pallet requirements with your inquiry.
Armazenar
Keep bags closed in a cool, seco, ventilated store. Moisture turns MA into maleic acid, and the dust is a skin and respiratory sensitizer — follow the SDS.
Transporte
Regulated for transport as a corrosive (E 2215, Aula 8, GP III).
Do primeiro e-mail ao fornecimento aprovado
Name the resin or product
UPR, alquídico, rosin, copolymer or an intermediate: tell us which one, because color and maleic-acid limits differ.
Compare os números que importam
Pureza, cor, free maleic acid, ash and iron. Ask for the same parameters on our COA that appear on your incoming-inspection sheet.
Proteja o material
MA picks up moisture. Check bag integrity on arrival and keep opened bags sealed, or the maleic-acid content will rise.
Julgamento, em seguida, bloqueie a especificação
Execute uma amostra em seu próprio processo e mantenha o COA do lote aprovado como referência para os limites do contrato.
Diga-nos sua necessidade. Nós combinamos a nota.
Tell us the resin or product you make, a quantidade e o porto de destino. Adicione sua especificação atual e faremos uma cotação com base nela.
| Informação | Exemplo |
|---|---|
| Aplicativo | UPR, alquídico, Rosina malic, SMA, intermediário |
| Especificação necessária | Pureza, cor, free maleic acid |
| Forma & embalagem | Flakes, briquettes or pastilles; bag size |
| Quantidade | Pedido de teste / mensal / volume anual |
| Destino | País e porto |
| Documentos necessários | COA, FDS, TDS, Declaração REACH |
Produtos relacionados
gama-butirolactona
Solvent and intermediate made from maleic anhydride by hydrogenation.
Ver produto →Anidrido Maleico (MA) Perguntas frequentes
What is maleic anhydride used for?
Mainly for unsaturated polyester resins. It is also used in alkyd resins, Rosina malic, SMA copolymers, anidrido polimaleico, and as an intermediate for malathion, maleic acid, fumaric acid and succinic anhydride.
Quais parâmetros devo comparar entre ofertas?
Pureza, cor, free maleic acid, ash and iron. For light-colored resins, color and maleic acid usually matter most.
How should maleic anhydride be stored?
In closed bags in a cool, seco, ventilated store. It reacts with moisture to form maleic acid and is a skin and respiratory sensitizer, so follow the SDS for handling.
Is maleic anhydride dangerous goods?
Sim. It is regulated as a corrosive for transport under UN 2215, Aula 8, GP III.
