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2-溴间二甲苯

2-溴间二甲苯用途

有机合成，药物中间体

2-溴间二甲苯名称

[ CAS 号 ]:
576-22-7

[ 中文名 ]:
2-溴-1,3-二甲苯

[ 英文名 ]:
2,6-Dimethylbromobenzene

[中文别名 ]:

[英文别名 ]:

EINECS 209-397-7
2-Bromo-1,3-dimethylbenzene
2,6-Dimethyl bromobenzene
Benzene, 2-bromo-1,3-dimethyl-
2,6-dimethyl-1-bromobenzene
MFCD00000075
2-Bromo-m-xylene

2-溴间二甲苯物理化学性质

[ 密度 ]:
1.3±0.1 g/cm3

[ 沸点 ]:
204.4±9.0 °C at 760 mmHg

[ 熔点 ]:
−10 °C(lit.)

[ 分子式 ]:
C₈H₉Br

[ 分子量 ]:
185.061

[ 闪点 ]:
73.9±0.0 °C

[ 精确质量 ]:
183.988754

[ LogP ]:
3.91

[ 外观性状 ]:
透明略黄色液体

[ 蒸汽压 ]:
0.4±0.4 mmHg at 25°C

[ 折射率 ]:
1.544

[ 储存条件 ]:
库房通风低温干燥,与氧化剂、食品添加剂分开存放

2-溴间二甲苯MSDS

2-溴间二甲苯毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: CY9020000

CHEMICAL NAME :: Benzene, 2-bromo-1,3-dimethyl-

CAS REGISTRY NUMBER :: 576-22-7

BEILSTEIN REFERENCE NO. :: 1929780

LAST UPDATED :: 199612

DATA ITEMS CITED :: 1

MOLECULAR FORMULA :: C8-H9-Br

MOLECULAR WEIGHT :: 185.08

WISWESSER LINE NOTATION :: ER B1 F1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 56 mg/kg

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

REFERENCE :: CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) Volume(issue)/page/year: NX#07031

2-溴间二甲苯安全信息

[ 符号 ]:

GHS07

[ 信号词 ]:
Warning

[ 危害声明 ]:
H315-H319-H335

[ 警示性声明 ]:
P261-P305 + P351 + P338

[ 个人防护装备 ]:
Eyeshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter

[ 危害码 (欧洲) ]:
Xi:Irritant

[ 风险声明 (欧洲) ]:
R36/37/38

[ 安全声明 (欧洲) ]:
S26-S36-S24/25

[ 危险品运输编码 ]:
UN 2810

[ WGK德国 ]:
3

[ RTECS号 ]:
CY9020000

[ 包装等级 ]:
I; II; III

[ 危险类别 ]:
6.1

[ 海关编码 ]:
2903999090

2-溴间二甲苯合成路线

2-溴间二甲苯上下游产品

2-溴间二甲苯上游产品

2-溴间二甲苯下游产品

2-溴间二甲苯制备

5L烧杯中加入610g(5mol)2,6-二甲基苯胺及3.75L氢溴酸,迅速搅拌下冷却,使成细小结晶,外用冰盐浴冷却.控制反应温度在低于15℃,搅拌下从液面下慢慢加入385g(5.5mol)亚硝酸钠溶于400mL水的溶液。将此重氮盐溶液逐渐加入至加热的、有回流冷凝器的反应器内;放氮反应缓和后于80℃水浴上保温3h。水蒸气蒸馏或加热蒸出粗品,以10%NaOH洗三次,水洗,干燥后减压分馏,收集80~84℃(1.7~2.0kPa)馏分得680g(73%)产物。

2-溴间二甲苯海关

[ 海关编码 ]: 2903999090

[ 中文概述 ]:
2903999090 其他芳烃卤化衍生物. 增值税率:17.0% 退税率:9.0% 监管条件:无最惠国关税:5.5% 普通关税:30.0%

[ 申报要素 ]: 品名, 成分含量, 用途

[ Summary ]:
2903999090 halogenated derivatives of aromatic hydrocarbons VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0%

2-溴间二甲苯文献

A versatile catalyst system for Suzuki-Miyaura syntheses of sterically hindered biaryls employing a cyclobutene-1,2-bis(imidazolium) salt.

Chem. Commun. (Camb.) 46 , 2995-2997, (2010)

The catalyst system consisting of 3,3'-(3,4-bis(dichloro-methylene)cyclobut-1-ene-1,2-diyl)bis(1-methyl-1H-imidazolium) bis(tetrafluoroborate), Pd(OAc)(2) and NaOtBu in toluene proved to be very effec...

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