파이로멜리틱 디안하이드리드
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파이로멜리틱 디안하이드리드 속성
- 녹는점
- 283-286 °C(lit.)
- 끓는 점
- 397-400 °C(lit.)
- 밀도
- 1,68 g/cm3
- 증기압
- 0Pa at 25℃
- 굴절률
- 1.6000 (estimate)
- 인화점
- 380 °C
- 용해도
- 디메틸 설폭사이드, 에 용해됨아세톤, 에 용해됨클로로포름, 에틸 에테르, n-헥산 및 벤젠에 용해됩니다.
- 물리적 상태
- 고운 가루
- 산도 계수 (pKa)
- 5.45[at 20 ℃]
- 색상
- 흰색에서 연한 노란색
- 수용성
- 물에서 분해되다
- 감도
- Moisture Sensitive
- BRN
- 213583
- InChIKey
- ANSXAPJVJOKRDJ-UHFFFAOYSA-N
- LogP
- -2.03 at 21.5℃
- CAS 데이터베이스
- 89-32-7(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
위험품 표기 | Xn | ||
---|---|---|---|
위험 카페고리 넘버 | 41-42/43 | ||
안전지침서 | 22-24-26-37/39 | ||
WGK 독일 | 1 | ||
RTECS 번호 | DB9300000 | ||
F 고인화성물질 | 10-21 | ||
TSCA | Yes | ||
HS 번호 | 29173980 | ||
유해 물질 데이터 | 89-32-7(Hazardous Substances Data) | ||
기존화학 물질 | KE-02686 |
파이로멜리틱 디안하이드리드 C화학적 특성, 용도, 생산
화학적 성질
White powder. Soluble in some organic solvents; hydrolyzes to the acid when exposed to moisture.용도
Pyromellitic dianhydride (PMDA) is employed as a curing agent for epoxy agent resins used for casting, laminating, the manufacture of moulding powders, adhesives and coatings.제조 방법
Pyromellitic Dianhydride is prepared by gas-phase oxidation of 1,2,4,5-tetramethylbenzene (or related tetrasubstituted benzene derivatives). An idealized equation is:C6H2(CH3)4 + 6 O2 → C6H2(C2O3)2 + 6 H2O
In the laboratory, it can be prepared by dehydration of pyromellitic acid using acetic anhydride.
주요 응용
Pyromellitic dianhydride (PMDA) has been used extensively as an important monomer in the preparation of a variety of thermoplastics such as polyesters, polycarbonates, polyethers polyethers, plasticizersplasticizers, expoxy resins, etc. Moreover, it is also useful in the preparation of high performance coatings that have been widely employed in many fields in our daily life beacuase of its excellent thermal, oxidative stability and excellent mechanical properties.Pyromellitic dianhydride (PMDA) is one of several highly reactive acid anhydrides and used extensively in the production of thermoplastics and high-performance coatings. Anhydrides including PMDA are respiratory irritants and immediate-type sensitisers. Some anhydrides have been associated with occupational asthma. PMDA has also been related to occupational asthma.
일반 설명
Pyromellitic dianhydride (PMDA) is an acidic anhydride that can be used as a repair agent and as a chain extender in the formation of polyethylene terephthalate (PET) based chain extensions. It is mainly used in the production of thermoplastics and other coating applications.위험도
Skin irritant.Purification Methods
Crystallise the dianhydride from ethyl methyl ketone or dioxane. Dry, and sublime it in vacuo.[Beilstein 19 H 196, 19/5 V 407.]파이로멜리틱 디안하이드리드 준비 용품 및 원자재
원자재
준비 용품
파이로멜리틱 디마이드
Polyimide film
1,2,4,5-벤젠테트라카복사미드
1,2,4,5-테트라시아노 벤젠
1,2,4,5-Cyclohexanetetracarboxylic Dianhydride
2,6-Bis(2-pyridinyl)benzo[1,2-c:4,5-c']dipyrrole-1,3,5,7-tetrone
2,6-Bis(3-hydroxyphenyl)-1,3,5,7-tetraoxo-1,2,3,5,6,7-hexahydrobenzo[1,2-c:4,5-c']dipyrrole
1,2,4,5-벤젠테트라키스(카르보닐클로라이드)
4-pmpmd
2,2-(1,3,5,7-tetraoxo-5,7-dihydropyrrolo(3,4-f)isoindole-2,6(1H,3H)diyl)dibenzoic acid
파이로멜리틱 디안하이드리드 공급 업체
글로벌( 432)공급 업체
공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
---|---|---|---|---|---|
Shanghai Daeyeon Chemicals Co., Ltd | 021-64478606 +8615900664856 |
daeyeon001@vip.163.com | China | 2062 | 58 |
Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418671 +8618949823763 |
sales@tnjchem.com | China | 34553 | 58 |
Junwee Chemical co., Ltd. | +86-571-85808636 +86-13958122542 |
sales@junweechem.com | China | 821 | 58 |
Hebei Weibang Biotechnology Co., Ltd | +8615531157085 |
abby@weibangbio.com | China | 8812 | 58 |
Hebei Mojin Biotechnology Co., Ltd | +86 13288715578 +8613288715578 |
sales@hbmojin.com | China | 12840 | 58 |
Hebei Yanxi Chemical Co., Ltd. | +8617531190177 |
peter@yan-xi.com | China | 5857 | 58 |
Hebei Chuanghai Biotechnology Co,.LTD | +86-13131129325 |
sales1@chuanghaibio.com | China | 5893 | 58 |
Shanghai Daken Advanced Materials Co.,Ltd | +86-371-66670886 |
info@dakenam.com | China | 18779 | 58 |
Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
info@tianfuchem.com | China | 21634 | 55 |
Shanghai Time Chemicals CO., Ltd. | +86-021-57951555 +8617317452075 |
jack.li@time-chemicals.com | China | 1803 | 55 |