메틸피라진
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메틸피라진 속성
- 녹는점
- -29 °C (lit.)
- 끓는 점
- 135 °C/761 mmHg (lit.)
- 밀도
- 1.03 g/mL at 25 °C (lit.)
- 굴절률
- n
20/D 1.504(lit.)
- 인화점
- 122 °F
- 저장 조건
- 2-8°C
- 용해도
- >20.87 mg/mL in EtOH with ultrasonic; >49.9 mg/mL in DMSO;
- 산도 계수 (pKa)
- 1.45(at 27℃)
- 물리적 상태
- 액체
- 색상
- 무색투명~미황색
- 냄새
- 디프로필렌 글리콜 중 1.00%. 열매가 많은 코코아 구운 초콜릿 땅콩 그린
- ?? ??
- 견과류
- 수용성
- 물에 완전히 섞임.
- JECFA Number
- 761
- BRN
- 105778
- InChIKey
- CAWHJQAVHZEVTJ-UHFFFAOYSA-N
- LogP
- 0.18
- CAS 데이터베이스
- 109-08-0(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
| 위험품 표기 | Xn,Xi,F | ||
|---|---|---|---|
| 위험 카페고리 넘버 | 10-22-36/37/38 | ||
| 안전지침서 | 26-36-16 | ||
| 유엔번호(UN No.) | UN 1993 3/PG 3 | ||
| WGK 독일 | 3 | ||
| RTECS 번호 | UQ3675000 | ||
| TSCA | Yes | ||
| 위험 등급 | 3 | ||
| 포장분류 | III | ||
| HS 번호 | 29339990 | ||
| 독성 | mouse,LD50,intraperitoneal,1820mg/kg (1820mg/kg),Toxicology and Applied Pharmacology. Vol. 17, Pg. 244, 1970. | ||
| 기존화학 물질 | KE-25312 |
메틸피라진 C화학적 특성, 용도, 생산
개요
2-Methylpyrazine has an odor threshold in water variously reported at 60,000 or 105,000 ppb. May be prepared from the corresponding carboxylic acid; by catalytic dehydrogenation of 2-methyl-piperazine; by condensation of methylglyoxal with ethylenediamine.화학적 성질
2-Methylpyrazine has a nutty, cocoa, green, roasted, chocolate, meaty odor.출처
Reported found in bakery products, roasted barley, cocoa products, coffee, dairy products, cooked meats, peanuts, filberts, pecans, popcorn, potato chips, rum and whiskey, soy product, roasted filberts, roasted almonds, guava, papaya, asparagus, kohlrabi, baked and fried potato, milk, boiled egg, smoked fish, beer, coffee, sesame seed, rice, sukiyaki, buckwheat, sweet corn, corn tortillas, malt, wort, wild rice, okra, crayfish, clam, squid and maté.용도
2-Methylpyrazine is used as flavoring agents in bread fresh bread, butter, chocolate, chocolate cocoa, coffee, meat roasted, nut almond.제조 방법
From corresponding carboxylic acid; by catalytic dehydrogenation of 2-methyl-piperazine; by condensation of methylglyoxal with ethylenediamine일반 설명
2-Methylpyrazine is an alkyl-substituted pyrazine used as a key intermediate in the synthesis of pyrazineamide, an anti-tubercular drug.Safety Profile
Moderately toxic by ingestion and intraperitoneal routes. Mutation data reported. Flammable liquid when exposed to heat, sparks, or flame. Can react with oxidizing materials. To fight fire, use water spray, foam, dry chemical, CO2. When heated to decomposition it emits highly toxic fumes of NOx.Purification Methods
Purify it via the picrate and distil the free base. The picrate has m133-134o(from EtOH). [Wiggins & Wise J Chem Soc 4780 1956, Beilstein 23 III/IV 911, 23/5 V 386.]메틸피라진 준비 용품 및 원자재
원자재
메틸 글리옥살
에틸렌디아민
2-Methylpiperazine
Pyrazine, 2,3-dimethyl-5-(1Z)-1-propen-1-yl-
Pyrazine, 3,5-dimethyl-2-(1Z)-1-propen-1-yl-
3-Ethyl-2,5-diMethylpyrazine
3,5-DIMETHYL-2-ETHYLPYRAZINE
에틸(2-)-3-메틸피라지온
2,3-디메틸피라진
2,3,5-트리메틸피라진
준비 용품
메틸피라진 공급 업체
글로벌( 463)공급 업체
| 공급자 | 전화 | 이메일 | 국가 | 제품 수 | 이점 |
|---|---|---|---|---|---|
| Hebei Mojin Biotechnology Co., Ltd | +8613288715578 |
sales@hbmojin.com | China | 12456 | 58 |
| Hebei Yanxi Chemical Co., Ltd. | +8617531190177 |
peter@yan-xi.com | China | 5993 | 58 |
| Capot Chemical Co.,Ltd. | 571-85586718 +8613336195806 |
sales@capotchem.com | China | 29797 | 60 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
info@tianfuchem.com | China | 21691 | 55 |
| Hefei TNJ Chemical Industry Co.,Ltd. | +86-0551-65418679 +86-18949832763 |
info@tnjchem.com | China | 2989 | 55 |
| career henan chemical co | +86-0371-86658258 |
sales@coreychem.com | China | 29914 | 58 |
| Jinan Finer Chemical Co., Ltd | +86-531-88989536 +86-15508631887 |
sales@finerchem.com | China | 2967 | 58 |
| Hebei Guanlang Biotechnology Co., Ltd. | +86-19930503282 |
alice@crovellbio.com | China | 8823 | 58 |
| Cangzhou Wanyou New Material Technology Co.,Ltd | 18631714998 |
sales@czwytech.com | CHINA | 906 | 58 |
| Xiamen AmoyChem Co., Ltd | +86-592-6051114 +8618959220845 |
sales@amoychem.com | China | 6387 | 58 |