디메틸테레프탈레이트
|
|
디메틸테레프탈레이트 속성
- 녹는점
- 140 °C
- 끓는 점
- 288 °C
- 밀도
- 1,29 g/cm3
- 증기 밀도
- 1.04 (vs air)
- 증기압
- 1.15 mm Hg ( 93 °C)
- 굴절률
- 1.4752
- 인화점
- 154 °C
- 저장 조건
- Store below +30°C.
- 용해도
- 물: 20°C에서 약간 용해됨0.0493g/L
- 물리적 상태
- 플레이크 또는 펠렛
- 산도 계수 (pKa)
- 0[at 20 ℃]
- 색상
- 하얀색
- 폭발한계
- 0.8-11.8%(V)
- 수용성
- 물에는 약간 용해되지만 뜨거운 알코올과 에테르에는 용해됩니다.
- Merck
- 14,9162
- BRN
- 1107185
- 안정성
- 안정적인. 강산, 강염기, 강산화제와 호환되지 않습니다.
- LogP
- 2.25 at 25℃
- CAS 데이터베이스
- 120-61-6(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
위험 카페고리 넘버 | 36/37/38 | ||
---|---|---|---|
안전지침서 | 24/25 | ||
유엔번호(UN No.) | 3256 | ||
WGK 독일 | 1 | ||
RTECS 번호 | WZ1225000 | ||
자연 발화 온도 | 520 °C DIN 51794 | ||
TSCA | Yes | ||
HS 번호 | 2917 37 00 | ||
유해 물질 데이터 | 120-61-6(Hazardous Substances Data) | ||
독성 | LD50 orally in Rabbit: 3200 mg/kg | ||
기존화학 물질 | KE-02228 |
디메틸테레프탈레이트 C화학적 특성, 용도, 생산
개요
Dimethyl terephthalate (DMT) is an organic compound with the formula C6H4(CO2CH3)2. It is the diester formed from terephthalic acid and methanol. It is a white solid that melts to give a distillable colourless liquid.화학적 성질
The empirical formula of dimethyl terephthalate (DMT) is C10H10O4. Its structural formula is 1,4-(COOCH3)2C6H4. At room temperature, exists as colorless crystals. DMT is soluble in ether and chloroform, slightly soluble in ethanol, and fairly insoluble in water (<1 g/L at 13℃).용도
Dimethyl terephthalate is used in the production of polyesters, including polyethylene terephthalate (PET) and poly trimethylene terephthalate. It consists of benzene substituted with carboxy methyl groups (CO2CH3) at the 1 and 4 positions. Because DMT is volatile, it is an intermediate in some schemes for the recyclic of PET, e.g. from plastic bottles.Hydrogenation of DMT affords the diol cyclohexanedimethanol, which is a useful monomer.
정의
ChEBI: Dimethyl terephthalate is a diester resulting from the formal condensation of the carboxy groups of terephthalic acid with methanol. It is a primary ingredient widely used in the manufacture of polyesters and industrial plastics. It is a methyl ester, a diester and a phthalate ester. It derives from a terephthalic acid.제조 방법
Several processes have been developed for the preparation of dimethyl terephthalate from p-xylene, but the most important proceeds as follows:The oxidation steps are carried out in the liquid phase at about 170??C and 1.5 MPa (15 atmospheres) in the presence of a cobalt acetate or naphthenate catalyst whilst the esterifications are conducted at about 150??C. Dimethyl terephthalate may also be produced by esterification of terephthalic acid.
생산 방법
Dimethyl terephthalate (DMT) has been produced in a number of ways. Conventionally and still of commercial value is the direct esterification of terephthalic acid. Alternatively, it can be prepared by alternating oxidation and methyl-esterification steps from p-xylene via methyl-p-toluate.일반 설명
Dimethyl terephthalate appears as white solid or heated colorless liquid. Has no odor. Liquid solidifies in cool water. Solid and liquid sink in water. (USCG, 1999)공기와 물의 반응
When mixed with air, the vapor or dust forms very hazardous and highly reactive mixtures. . Insoluble in water.반응 프로필
DIMETHYL TEREPHTHALATE is an ester. Esters react with acids to liberate heat along with alcohols and acids. Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products. Heat is also generated by the interaction of esters with caustic solutions. Flammable hydrogen is generated by mixing esters with alkali metals and hydrides. Can generate electrostatic charges. [Handling Chemicals Safely 1980. p. 250]. DIMETHYL TEREPHTHALATE is sensitive to heat. The molten material reacts with water due to the temperature. DIMETHYL TEREPHTHALATE is incompatible with strong oxidizers, strong acids and strong bases.건강위험
Molten DMT will cause severe burns of skin on contact.화재위험
DIMETHYL TEREPHTHALATE is combustible.Safety Profile
Moderately toxic by intraperitoneal route. Mdly toxic by ingestion. An eye irritant. Mutation data reported. When heated to decomposition it emits acrid smoke and irritating fumesCarcinogenicity
In a study conducted by the NCI, DMT was not considered to be carcinogenic in rats or mice ingesting 2500 or 5000 ppm in the diet for 103 weeks.Source
Dimethyl terephthalate is a natural product found in Hypotrachyna nepalensis, Uncaria elliptica, and other organisms with data available.Purification Methods
Purify it by recrystallisation from aqueous EtOH, MeOH or CCl4; or by zone melting. [Beilstein 6 H 843, 6 III 4250, 6 IV 3303.] .디메틸테레프탈레이트 준비 용품 및 원자재
원자재
Cobalt manganese salt
p-자일렌
메틸 p-톨루에이트
mono-Methyl terephthalate
황산동(II)
메틸알콜
Esterification reactor
테레프탈산
황산
1,4-벤젠디카르복실산1-에틸4-메틸에스테르
2,5-푸란디카복실산디에틸에스테르
준비 용품
polyester-based liquid crystalling ionmer containing sulfonate group
Polyester resin paint
mono-Methyl terephthalate
폴리에틸렌 테레프탈산
Antistatic finishing agent
1,4-시클로헥산디메탄올
3,8,15,20,27,32-헥사옥사테트라시클로[32.2.2.210,13.222,25]도테트라콘타-1(3
테레프탈산2-하이드록시에틸메틸에스테르
비스(2-하이드록시에틸) 테레프탈레이트
P-자일렌-알파,알파,알파,알파',알파',알파'-D6
TRANS-1,4-CYCLOHEXANEDIMETHANOL
디메틸테레프탈레이트 공급 업체
글로벌( 495)공급 업체
공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
---|---|---|---|---|---|
ZHEJIANG JIUZHOU CHEM CO., LTD | +86-0576225566889 +86-13454675544 |
admin@jiuzhou-chem.com;jamie@jiuzhou-chem.com;alice@jiuzhou-chem.com | China | 19947 | 58 |
Hebei Shengyang Water Conservancy Engineering Co., Ltd. | +8615373025980 |
clara@hbshengyang.com | China | 868 | 58 |
Qingdao Dexin Chemical Co., Ltd | +86-15553333686 +86-15553333686 |
15553333686@qq.com | China | 2865 | 58 |
Hebei Duling International Trade Co. LTD | +8617333973358 |
sales01@hbduling.cn | China | 15437 | 58 |
Henan Bao Enluo International TradeCo.,LTD | +86-17331933971 +86-17331933971 |
deasea125996@gmail.com | China | 2503 | 58 |
Shaanxi Haibo Biotechnology Co., Ltd | +undefined18602966907 |
qinhe02@xaltbio.com | China | 1000 | 58 |
Anhui Ruihan Technology Co., Ltd | +8617756083858 |
daisy@anhuiruihan.com | China | 994 | 58 |
Shijiazhuang Saixin Technology Co., Ltd. | +86-16632312509 +86-16632315022 |
saixinkeji@aliyun.com | China | 90 | 58 |
Nantong Guangyuan Chemicl Co,Ltd | +undefined17712220823 |
admin@guyunchem.com | China | 616 | 58 |
Hebei Jingbo New Material Technology Co., Ltd | +8619931165850 |
hbjbtech@163.com | China | 1000 | 58 |
디메틸테레프탈레이트 관련 검색:
트리멜리트산 트리알킬(C4~11) 디메틸테레프탈레이트 트리메틸벤젠트리카복실레이트-1,2,4 1,4-벤젠 다이카복실산 다이에틸 에스터 1,4-벤젠디카복실산, 디메틸 에스테르, 1,4 부탄디올과의 중합체 디메틸 테레프탈산-디에틸렌 글리콜-에틸렌 글리콜 중합체 파이로멜리틱 디안하이드리드 다이메틸 프탈레이트 테레프탈산 1,4-벤젠디카르복실산, 디메틸 에스테르, 중합체, 1,4-시클로헥산디메탄올과 1,2-에탄디올 함유 다이메틸 테레프탈산염-뷰틸렌 글리콜-폴리에테르 공중합물 디메틸 테레프탈산, 1,4-시클로헥산디메탄올과의 중합체
mono-Methyl terephthalate
2-Nitro-1,4-benzenedicarboxylic acid dimethyl ester
Dimethyl chloroterephthalate
Dimethyl nitroterephthalate
1,4,5,8-Naphthalenetetracarboxylic dianhydride
DIMETHYL 2-FLUOROTEREPHTHALATE