均三甲苯

均三甲苯用途

【用途一】
用于生产均苯三甲酸以及抗氧剂、环氧树脂固化剂、聚酯树脂稳定剂、醇酸树脂增塑剂和染料等
【用途二】
有机合成原料，用于制取均苯三甲酸，以及抗氧化剂、环氧树脂固化剂、聚酯树脂稳定剂、醇酸树脂增塑剂，制取2,4,6-三甲苯胺用于生产活性艳蓝、K-3R等染料。
【用途三】
在科学研究和化工生产中，均三甲苯(108-67-8)广泛地用作溶剂。它可燃，有刺激性，而且凝固点很低。在电子工业中，由于均三甲苯(108-67-8)是一种良好的溶剂，它还被用作硅酮感光片的显影剂。均三甲苯(108-67-8)也是一种城市中常见的挥发性有机化合物（VOC），主要由燃烧产生。它在很多大气化学的反应中发挥重要作用（包括气雾和对流层臭氧的生成）。均三甲苯基(108-67-8)是一个在多种有机化合物中存在的官能团。由于芳环上的三个氢有着相同的化学环境，均三甲苯(108-67-8)的核磁共振氢谱中只在6.8ppm附近给出一个峰面积对应于3个氢的单峰。因此，均三甲苯有时在包含芳香质子的有机样品的核磁共振测定中用作内标物。

均三甲苯名称

[ CAS 号 ]:
108-67-8

[ 中文名 ]:
均三甲苯

[ 英文名 ]:
Mesitylene

[中文别名 ]:

[英文别名 ]:

2,4,6-Me3-Ph
sym-trimethylbenzene
2,4,6-trimethylbenzene
3,5-Dimethyltoluene
UNII-887L18KQ6X
Fleet-X
Trimethylbenzene,1,3,5
Trimethylbenzol
1,3,5-Trimethyl benzene
Trimethylbenzene, 1,3,5-

均三甲苯物理化学性质

[ 密度 ]:
0.9±0.1 g/cm3

[ 沸点 ]:
166.7±20.0 °C at 760 mmHg

[ 熔点 ]:
-45 °C

[ 分子式 ]:
C₉H₁₂

[ 分子量 ]:
120.192

[ 闪点 ]:
44.4±0.0 °C

[ 精确质量 ]:
120.093903

[ LogP ]:
3.60

[ 外观性状 ]:
无色液体带有一种特有的气味

[ 蒸汽密度 ]:
4.1 (vs air)

[ 蒸汽压 ]:
2.3±0.1 mmHg at 25°C

[ 折射率 ]:
1.501

[ 储存条件 ]:
库房通风低温干燥,与氧化剂分开存放

[ 稳定性 ]:
Stable. Combustible. Incompatible with strong oxidizing agents.

[ 水溶解性 ]:
2.9 g/L (20 ºC)

均三甲苯MSDS

详细MSDS(安全技术说明书)

均三甲苯毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: OX6825000

CHEMICAL NAME :: Mesitylene

CAS REGISTRY NUMBER :: 108-67-8

LAST UPDATED :: 199710

DATA ITEMS CITED :: 15

MOLECULAR FORMULA :: C9-H12

MOLECULAR WEIGHT :: 120.21

WISWESSER LINE NOTATION :: 1R C1 E1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: Standard Draize test

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - rabbit

REFERENCE :: 85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,34,1986

TYPE OF TEST :: Standard Draize test

ROUTE OF EXPOSURE :: Administration into the eye

SPECIES OBSERVED :: Rodent - rabbit

REFERENCE :: 85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,34,1986 ** ACUTE TOXICITY DATA **

TYPE OF TEST :: TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Human

DOSE/DURATION :: 10 ppm

TOXIC EFFECTS :: Peripheral Nerve and Sensation - sensory change involving peripheral nerve Behavioral - somnolence (general depressed activity) Lungs, Thorax, or Respiration - structural or functional change in trachea or bronchi

REFERENCE :: ZUBEAQ Zeitschrift fuer Unfallmedizin und Berufskrankheiten. Revue de Medecine des Accidents et des Maladies Professionelles. (Verlag Berichthaus, Zwingliplatz 3, Postfach, CH-8022, Zurich, Switzerland) V.1- 1907- Volume(issue)/page/year: 49,265,1956

TYPE OF TEST :: LC50 - Lethal concentration, 50 percent kill

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 24 gm/m3/4H

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 44(5),15,1979

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 1303 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: AMIHBC AMA Archives of Industrial Hygiene and Occupational Medicine. (Chicago, IL) V.2-10, 1950-54. For publisher information, see AEHLAU. Volume(issue)/page/year: 9,227,1954 ** OTHER MULTIPLE DOSE TOXICITY DATA **

TYPE OF TEST :: TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :: Inhalation

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 20 mg/m3/24H/17W-I

TOXIC EFFECTS :: Kidney, Ureter, Bladder - other changes in urine composition Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - catalases

REFERENCE :: GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 44(5),15,1979 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-DENMARK:TWA 25 ppm (120 mg/m3) JAN 1993 OEL-SWEDEN:TWA 25 ppm (120 mg/m3);STEL 35 ppm (170 mg/m3) JAN 1993 OEL-SWITZERLAND:TWA 25 ppm (125 mg/m3) JAN 1993 OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - T1998 No. of Facilities: 495 (estimated) No. of Industries: 4 No. of Occupations: 6 No. of Employees: 12997 (estimated) No. of Female Employees: 231 (estimated)

均三甲苯安全信息

[ 符号 ]:

GHS02, GHS06, GHS08

[ 信号词 ]:
Danger

[ 危害声明 ]:
H225-H301 + H311 + H331-H370

[ 警示性声明 ]:
P210-P260-P280-P301 + P310 + P330-P302 + P352 + P312-P370 + P378

[ 个人防护装备 ]:
Eyeshields;Faceshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US)

[ 危害码 (欧洲) ]:
Xi:Irritant;N:Dangerousfortheenvironment;

[ 风险声明 (欧洲) ]:
R10;R37;R51/53

[ 安全声明 (欧洲) ]:
S61-S45-S36/37-S16-S7

[ 危险品运输编码 ]:
UN 2325 3/PG 3

[ WGK德国 ]:
2

[ RTECS号 ]:
OX6825000

[ 包装等级 ]:
III

[ 危险类别 ]:
3

[ 海关编码 ]:
2902909090

均三甲苯合成路线

详细合成路线

均三甲苯上下游产品

均三甲苯上游产品

均三甲苯下游产品

均三甲苯制备

1.由C9芳烃分离而得。

2.在重整重芳烃中均三甲苯约11.8%。但由于它的沸点（164.7℃）与邻甲乙基苯沸点极其相近（165.15℃），采用精馏法难以分离。

3.以偏三甲苯为原料的异构化法，分馏所得的1,3,5-三甲苯的单程产率为21.6%，纯度达95%以上，同时副产品有4%-7%的均四甲苯和9%的二甲苯。反应器床层平均温度260℃，压力2.35MPa，空整1.0h-1，重整氢与油的摩尔比为10：1，催化剂为缺铝氢型丝光沸石：铜：镍：粘结剂＝85.2：0.5：15。在此条件下，偏三甲苯转化率46%，选择性47%，均三甲苯单程产率21.6%。日本三菱瓦斯公司用HF-BF3进行二甲苯分离、异构化，副产品含高浓度1,3,5-三甲苯的高沸物，经蒸馏精制可得该品。

4.丙酮在硫酸催化下脱水合成以13%-15%的收率可获得该品。将4600g（79mol）工业丙酮冷却至0-5℃，搅拌下加入4160ml浓硫酸，温度不超过10℃。加毕继椟搅拌3-4h，在室温放置18-24h。将产物进行水蒸气蒸馏，分离出1,3,5-三甲苯，再进行碱洗、水洗，蒸馏收集210℃馏分，在此馏分中加15g金属钠，加热至近沸点，蒸去2/3的液体，将剩余物蒸馏到210℃，高效分馏收集163-167℃馏分，得430-470g1,3,5-三甲苯。

5.在煤焦油和石油粗品中分离而得。

均三甲苯海关

[ 海关编码 ]: 2902909090

[ 中文概述 ]:
2902909090. 其他芳香烃. 增值税率:17.0%. 退税率:9.0%. 监管条件:无. 最惠国关税:2.0%. 普通关税:30.0%

[ 申报要素 ]: 品名, 成分含量

[ Summary ]:
2902909090 other aromatic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0%

均三甲苯文献

Do we need covalent bonding of Si nanoparticles on graphene oxide for Li-ion batteries?

Faraday Discuss. 173 , 391-402, (2014)

In this manuscript, we report our investigation of anode materials for Li-ion batteries based on silicon-graphene oxide composites. Previous reports in the literature on silicon-graphene oxide (GO) co...

QSPR modeling of octanol/water partition coefficient for vitamins by optimal descriptors calculated with SMILES.

Eur. J. Med. Chem. 43 , 714-40, (2008)

Simplified molecular input line entry system (SMILES) has been utilized in constructing quantitative structure-property relationships (QSPR) for octanol/water partition coefficient of vitamins and org...

Evaluation of injection methods for fast, high peak capacity separations with low thermal mass gas chromatography.

J. Chromatogr. A. 1392 , 82-90, (2015)

Low thermal mass gas chromatography (LTM-GC) was evaluated for rapid, high peak capacity separations with three injection methods: liquid, headspace solid phase micro-extraction (HS-SPME), and direct ...

更多文献