1,2,4-트리메틸벤젠
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1,2,4-트리메틸벤젠 속성
- 녹는점
- -44 °C
- 끓는 점
- 168 °C(lit.)
- 밀도
- 0.876 g/mL at 20 °C(lit.)
- 증기 밀도
- 4.1 (vs air)
- 증기압
- 4.5 mm Hg ( 37.7 °C)
- 굴절률
- n
20/D 1.504(lit.)
- 인화점
- 120 °F
- 저장 조건
- Store below +30°C.
- 용해도
- 0.057g/L
- 산도 계수 (pKa)
- >14 (Schwarzenbach et al., 1993)
- 물리적 상태
- 액체
- 색상
- 무색의
- 냄새
- 향기로운 냄새
- 폭발한계
- 0.8-7%(V)
- Odor Threshold
- 0.12ppm
- 수용성
- 알코올, 벤젠, 에테르에 용해됩니다. 물에 약간 용해됨
- Merck
- 14,7915
- BRN
- 1903005
- Henry's Law Constant
- 6.946, 11.202, and 15.702 at 27.0, 35.0, and 45.0 °C, respectively (dynamic headspace, Hansen et al., 1995)
- 노출 한도
- NIOSH REL: TWA 25 ppm (125 mg/m3); ACGIH TLV: TWA for mixed isomers 25 ppm (adopted).
- Dielectric constant
- 2.4（16℃）
- 안정성
- 안정적인. 강한 산화제와 호환되지 않습니다. 가연성. 공기와 폭발성 혼합물을 형성할 수 있음.
- InChIKey
- GWHJZXXIDMPWGX-UHFFFAOYSA-N
- LogP
- 3.630
- CAS 데이터베이스
- 95-63-6(CAS DataBase Reference)
안전
- 위험 및 안전 성명
- 위험 및 사전주의 사항 (GHS)
| 위험품 표기 | Xn,N,F,Xi,T | ||
|---|---|---|---|
| 위험 카페고리 넘버 | 10-20-36/37/38-51/53-39/23/24/25-23/24/25-11-65 | ||
| 안전지침서 | 26-61-45-36/37-16-7-62 | ||
| 유엔번호(UN No.) | UN 3295 3/PG 3 | ||
| WGK 독일 | 2 | ||
| RTECS 번호 | DC3325000 | ||
| 자연 발화 온도 | 959 °F | ||
| 위험 참고 사항 | Irritant/Flammable | ||
| TSCA | Yes | ||
| 위험 등급 | 3 | ||
| 포장분류 | III | ||
| HS 번호 | 29029090 | ||
| 유해 물질 데이터 | 95-63-6(Hazardous Substances Data) | ||
| 독성 | LD50 i.p. in male, female mice (mg/kg): 5000, 4100 (Janik-Spiechowicz) | ||
| 기존화학 물질 | KE-34410 |
1,2,4-트리메틸벤젠 C화학적 특성, 용도, 생산
개요
1,2,4-Trimethylbenzene (mesitylene) is an aromatic hydrocarbon compound commonly present in commercial solvents encompassing their boiling range. Mesitylene are the most common isomer used in commercial applications. Aromatic hydrocarbons in hydrocarbon solvents are predominantly alkylated one ring structures as well as two aromatic ring structures which may also be alkylated.화학적 성질
colourless liquid. Insoluble in water, soluble in ethanol, ether and benzene.물리적 성질
Colorless liquid with a slight aromatic odor. A detection odor threshold concentration of 12 mg/m3 (2.4 ppmv) was experimentally determined by Dravnieks (1974).용도
1,2,4-Trimethylbenzene is the unlabelled version of 1,2,4-Trimethyl 13C6-benzene (T796173), a labelled aromatic standard.정의
ChEBI: 1,2,4-trimethylbenzene is a trimethylbenzene carrying methyl groups at positions 1, 2 and 4. It has a role as a neurotoxin.일반 설명
A liquid. Flash point near 130°F. Less dense than water and insoluble in water. Vapors irritate eyes, throat, and nose. Used in dyes and pharmaceuticals.공기와 물의 반응
Insoluble in water.반응 프로필
1,2,4-Trimethylbenzene is incompatible with the following: Oxidizers, nitric acid .위험도
Moderate fire risk. Central nervous system depressant, irritant to mucous membranes. Asthma and hematologic effects.건강위험
Harmful if inhaled or swallowed. Vapor or mist is irritating to the eyes, mucous membrane and upper respiratory tract. Prolonged contact can cause dermatitis, nausea, headache, dizziness, and narcotic effect.Safety Profile
Moderately toxic by intraperitoneal route. Mildly toxic by inhalation. Can cause central nervous system depression, anemia, bronchitis. Flammable liquid when exposed to heat, sparks, or flame. To fight fire, use foam, alcohol foam, mist. Emitted from modern building materials (CENEAR 69,22,91). When heated to decomposition it emits acrid smoke and irritating fumes.환경귀착
Biological. In anoxic groundwater near Bemidji, MI, 1,2,4-trimethylbenzene anaerobically biodegraded to the intermediate 3,4-dimethylbenzoic acid and the tentatively identified compounds 2,4- and/or 2,5-dimethylbenzoic acid (Cozzarelli et al., 1990).Photolytic. Glyoxal, methylglyoxal, and biacetyl were produced from the photooxidation of 1,2,4-trimethylbenzene by OH radicals in air at 25 °C (Tuazon et al., 1986a). A rate constant of 2.0 x 10-8 L/molecule?sec was reported for the reaction of 1,2,4-trimethylbenzene with OH radicals in the gas phase (Darnall et al., 1976). Similarly, the rate constants for the reaction of 1,2,4- trimethylbenzene and OH radicals at room temperature were 3.35 x 10-11 (Hansen et al., 1975) and 3.84 x 10-11 cm3/molecule?sec (Atkinson, 1985). At 25 °C, a rate constant of 3.15 x 10-11 cm3/molecule?sec was reported for the same reaction (Ohta and Ohyama, 1985). Products identified from the OH radical-initiated reaction of 1,2,4-trimethylbenzene in the presence of nitrogen dioxide were 3-hexene-2,5-dione and 2,3-butanedione (Bethel et al., 2000).
Chemical/Physical. 1,2,4-Trimethylbenzene will not hydrolyze in water (Kollig, 1993).
Purification Methods
Reflux pseudocumene over sodium and distil it under reduced pressure. [Beilstein 6 H 1088, 6 I 542, 6 II 1072, 6 III 6278, 6 IV 7339.]1,2,4-트리메틸벤젠 준비 용품 및 원자재
원자재
준비 용품
1,2,4-트리메틸벤젠 공급 업체
글로벌( 288)공급 업체
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| Hebei Mojin Biotechnology Co., Ltd | +8613288715578 |
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| Henan Fengda Chemical Co., Ltd | +86-371-86557731 +86-13613820652 |
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| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
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| NINGBO INNO PHARMCHEM CO., LTD. | 13867897135 |
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| Xiamen AmoyChem Co., Ltd | +86-592-6051114 +8618959220845 |
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| Xi'an Kono chem co., Ltd., | 029-86107037 13289246953 |
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| career henan chemical co | +86-0371-86658258 15093356674; |
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