Two reactive handles
The C=C bond copolymerizes and the anhydride ring esterifies, so one raw material serves UPR, 알키드, rosin and copolymer chemistry.
엄마
말레산 무수물 (엄마) 중국 공급 업체
말레산 무수물 (엄마) 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
- 모든 배송에 대한 로트 COA
- 시험용 샘플
- 평가판에 대한 기술 지원
제품개요 & 주요 이점
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, polymaleic anhydride, and pesticides such as malathion.
For resin makers, 청정, 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.
귀하의 조건에 따라 지정됨
We quote against your purity, color and maleic-acid limits and send the batch COA for each lot.
기술 사양
| 매개변수 | 일반적인 값 |
|---|---|
| 제품명 | 말레산 무수물 (엄마) |
| 동의어 | 2,5-Furandione; cis-butenedioic anhydride |
| CAS 번호. | 108-31-6 |
| EC 아니요. | 203-571-6 |
| 분자식 | C₄H₂O₃ |
| 분자량 | 98.06 |
| 모습 | White solid (flakes, briquettes or pastilles) |
청정, 색상, free maleic acid and ash limits depend on the producer grade and are stated on the TDS and batch COA; 주문 한도는 견적서와 계약서에서 확인됩니다..
Applications by Industry
Where maleic anhydride is used, 공급을 전환하기 전에 확인해야 할 사항.
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.
시험 전 확인
- Resin type (ortho, iso, DCPD) and color target
- Purity and free maleic-acid limits
- Delivery form and monthly volume
Alkyd resins, maleic rosin & 코팅
Adds acid functionality to alkyd resins, and reacts with rosin to make maleic rosin for printing inks, paper size and coatings.
시험 전 확인
- Resin or ink type
- Color target
- Bag size that suits your charging
SMA copolymers & 폴리머 첨가제
Copolymerized with styrene to make SMA resins, polymerized to polymaleic anhydride for water treatment, and grafted onto polyolefins to make compatibilizers.
시험 전 확인
- 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, fumaric acid, succinic anhydride and tetrahydrophthalic anhydride.
시험 전 확인
- Synthesis route and impurity limits
- Documents your QA team needs
- Annual volume
선택 & 비교
Choosing the right MA grade
| 귀하의 요구 사항 | 일반적으로 작동하는 것 |
|---|---|
| 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 |
| 기존 공급업체 교체 | 현재 TDS 또는 COA 보내기; 우리는 귀하가 승인한 매개변수에 대해 견적을 내립니다. |
포장 & 저장
포장
Pack size depends on the form (flakes, briquettes or pastilles). Tell us your bag size and pallet requirements with your inquiry.
저장
Keep bags closed in a cool, 마른, ventilated store. Moisture turns MA into maleic acid, and the dust is a skin and respiratory sensitizer — follow the SDS.
수송
Regulated for transport as a corrosive (그리고 2215, 수업 8, PG III).
첫 번째 이메일부터 승인된 공급까지
Name the resin or product
UPR, 알키드, rosin, copolymer or an intermediate: tell us which one, because color and maleic-acid limits differ.
중요한 숫자를 비교하세요
청정, 색상, free maleic acid, ash and iron. Ask for the same parameters on our COA that appear on your incoming-inspection sheet.
Protect the material
MA picks up moisture. Check bag integrity on arrival and keep opened bags sealed, or the maleic-acid content will rise.
재판, 그런 다음 사양을 잠급니다.
Run a sample in your own process and keep the approved lot COA as the reference for contract limits.
귀하의 요구 사항을 알려주십시오. 우리는 등급을 일치.
Tell us the resin or product you make, 수량 및 대상 포트. 현재 사양을 추가하면 이에 대한 견적을 보내드립니다..
| 정보 | 예 |
|---|---|
| 애플리케이션 | UPR, 알키드, maleic rosin, SMA, intermediate |
| 필수사양 | 청정, 색상, free maleic acid |
| 형태 & 포장 | Flakes, briquettes or pastilles; bag size |
| 수량 | 평가판 주문 / 월간 간행물 / 연간 볼륨 |
| 목적지 | 국가 및 항구 |
| 필요한 서류 | COA, SDS, TDS, REACH statement |
관련상품
말레산 무수물 (엄마) 자주하는 질문
What is maleic anhydride used for?
Mainly for unsaturated polyester resins. It is also used in alkyd resins, maleic rosin, SMA copolymers, polymaleic anhydride, and as an intermediate for malathion, maleic acid, fumaric acid and succinic anhydride.
Which parameters should I compare between offers?
청정, 색상, 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, 마른, 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?
예. It is regulated as a corrosive for transport under UN 2215, 수업 8, PG III.
