2,4-二硝基氟苯
2,4-二硝基氟苯用途
用作医药、农药、染料中间体
【用途二】
本品可制成2,4-二氯氟苯,后者是合成环丙沙星、培氟沙星、二氟沙星等喹喏酮类抗菌药的起始原料。本品也是一种重要的分析试剂,用来鉴定有机化合物中的氨基,尤其是用于检定肽及蛋白质末端氨基酸的氨基。检定时,2,4-二硝基氟苯与肽链的游离氨基作用,生成2,4-二硝基衍生物。将其水解后,末端氨基酸的N-(2,4-二硝基苯基)衍生物常为亮黄色结晶,易与其他氨基酸分离。用该方法结合其他方法,可确定蛋白质或多肽氨基端碳链的结构,称桑格法。本品也用于测定酚和咖啡,以及醛糖分析。
2,4-二硝基氟苯名称
[ CAS 号 ]:
70-34-8
[ 中文名 ]:
2,4-二硝基氟苯
[ 英文名 ]:
1-Fluoro-2,4-dinitrobenzene
[中文别名 ]:
[英文别名 ]:
- Sanger reagent
- Sanger's Reagent
- 2,4-DNBF
- 2,4-Dinitrofluorobenzene
- DNFB
- fluoro-2,4-dinitrobenzene
- Dinitrofluorobenzene
- EINECS 200-734-3
- Fluorodinitrobenzene
- Benzene, 1-fluoro-2,4-dinitro-
2,4-二硝基氟苯物理化学性质
[ 密度 ]:
1.6±0.1 g/cm3
[ 沸点 ]:
296.0±20.0 °C at 760 mmHg
[ 熔点 ]:
25-27 °C(lit.)
[ 分子式 ]:
C6H3FN2O4
[ 分子量 ]:
186.097
[ 闪点 ]:
132.8±21.8 °C
[ 精确质量 ]:
186.007690
[ PSA ]:
91.64000
[ LogP ]:
1.16
[ 外观性状 ]:
黄色晶体
[ 蒸汽压 ]:
0.0±0.6 mmHg at 25°C
[ 折射率 ]:
1.585
[ 储存条件 ]:
库房通风低温干燥,与还原剂、食品添加剂分开存放
[ 稳定性 ]:
Stable. Combustible. Incompatible with strong oxidizing agents, strong bases.
[ 水溶解性 ]:
400 mg/L (25 ºC)
2,4-二硝基氟苯MSDS
2,4-二硝基氟苯毒性和生态
CHEMICAL IDENTIFICATION
- RTECS NUMBER :
- CZ7800000
- CHEMICAL NAME :
- Benzene, 2,4-dinitro-1-fluoro-
- CAS REGISTRY NUMBER :
- 70-34-8
- BEILSTEIN REFERENCE NO. :
- 0398632
- LAST UPDATED :
- 199710
- DATA ITEMS CITED :
- 14
- MOLECULAR FORMULA :
- C6-H3-F-N2-O4
- MOLECULAR WEIGHT :
- 186.11
- WISWESSER LINE NOTATION :
- WNR BF ENW
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
- TYPE OF TEST :
- LDLo - Lowest published lethal dose
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 50 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- TYPE OF TEST :
- LDLo - Lowest published lethal dose
- ROUTE OF EXPOSURE :
- Administration onto the skin
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 100 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- TYPE OF TEST :
- LDLo - Lowest published lethal dose
- ROUTE OF EXPOSURE :
- Subcutaneous
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 100 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
MUTATION DATA
- TYPE OF TEST :
- Morphological transformation
- TEST SYSTEM :
- Rodent - hamster Kidney
- DOSE/DURATION :
- 80 ug/L
- REFERENCE :
- BJCAAI British Journal of Cancer. (Macmillan Press Ltd., Houndmills, Basingstoke, Hants. RG21 2XS, UK) V.1- 1947- Volume(issue)/page/year: 37,873,1978 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X5163 No. of Facilities: 7 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 28 (estimated)
2,4-二硝基氟苯安全信息
[ 符号 ]:
GHS07, GHS08
[ 信号词 ]:
Warning
[ 危害声明 ]:
H302-H315-H317-H319-H335-H373
[ 警示性声明 ]:
P261-P280-P305 + P351 + P338
[ 个人防护装备 ]:
dust mask type N95 (US);Eyeshields;Faceshields;Gloves
[ 危害码 (欧洲) ]:
C:Corrosive
[ 风险声明 (欧洲) ]:
R22;R23/24/25;R33;R34;R40;R42/43
[ 安全声明 (欧洲) ]:
S22-S26-S36/37/39-S45-S28A
[ 危险品运输编码 ]:
UN 3261 8/PG 2
[ WGK德国 ]:
3
[ RTECS号 ]:
CZ7800000
[ 包装等级 ]:
III
[ 危险类别 ]:
6.1
[ 海关编码 ]:
29049085
2,4-二硝基氟苯合成路线
2,4-二硝基氟苯上下游产品
2,4-二硝基氟苯上游产品
2,4-二硝基氟苯下游产品
2,4-二硝基氟苯制备
1.以2,4-二硝基氯苯与无水氟化钾为原料,经亲核取代反应而得。
2.将无水氟化钾,二甲基亚砜和适量阻聚剂混合,控料加热至120℃,然后加入2,4-二硝基氯苯 [ 各反应物的配比为2,4-二硝基氯苯∶无水氟化钾∶二甲基亚砜∶阻聚剂=1.0∶1.8∶ 3.4∶0.1( 摩尔比)]。维持反应温度在110~120℃( 严格控制反应温度,以防爆炸) ,反应3h:
反应结束后迅速冷却至室温。抽滤除去氟化钾残渣,滤液中加水洗涤,静置后分去水层(可回收二甲基亚砜),油层由水洗涤2次,于2.73kPa下减压蒸馏,收集176~180℃馏分,即为成品2,4-二硝基氟苯。
2,4-二硝基氟苯海关
[ 海关编码 ]: 2904909090
[ 中文概述 ]:
2904909090 其他烃的磺化、硝化、亚硝化衍生物(不论是否卤化). 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 ]:
HS:2904909090 sulphonated, nitrated or nitrosated derivatives of hydrocarbons, whether or not halogenated VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:5.5% General tariff:30.0%
2,4-二硝基氟苯文献
J. Exp. Med. 211(13) , 2549-66, (2014)
DOCK8 mutations result in an inherited combined immunodeficiency characterized by increased susceptibility to skin and other infections. We show that when DOCK8-deficient T and NK cells migrate throug...
Natural killer T cells are essential for the development of contact hypersensitivity in BALB/c mice.J. Invest. Dermatol. 134(11) , 2709-18, (2014)
Contact hypersensitivity (CHS) has been widely used to study cutaneous immune responses, as a prototype of delayed-type hypersensitivity. Although natural killer T (NKT) cells have been assumed to hav...
Depletion of regulatory T cells in a hapten-induced inflammation model results in prolonged and increased inflammation driven by T cells.Clin. Exp. Immunol. 179(3) , 485-99, (2015)
Regulatory T cells (Tregs ) are known to play an immunosuppressive role in the response of contact hypersensitivity (CHS), but neither the dynamics of Tregs during the CHS response nor the exaggerated...
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