4-硝基甲苯

  • 基本信息
  • 制备方法及用途
  • 物化性质
  • 安全信息
  • 毒理性
  • MSDS
  • 结构与计算化学
  • 上游产品
  • 下游产品
  • 表征图谱

4-硝基甲苯 基本信息

中文名称:
4-硝基甲苯 
中文别名:
对硝基甲苯;
4-硝基甲苯;
1-甲基-4-硝基苯 
英文名称:
4-Nitrotoluene
英文别名:
4-nitrotoluene;
C-nitrosophenol;
para-nitrotoluene;
4-nitrosobenzyl alcohol;
4-nitro-toluene;
para-nitrosophenol;
4-Nitrosofenol;
Nitrosophenol;
Quinomeoxime;
4-hydroxynitrosobenzene;
p-methylnitrobenzene;
nitroso-4phenol;
1-nitroso-4-hydroxy-benzene;
p-nitrotoluene;
4-nitroso-pheno;
4-Nitrotoluene;
quinoneoxime;
P-NITROSOPHENOL 
CAS No.:
99-99-0
分 子 式:

C7H7NO2

分 子 量:
137.14
精确分子量:
137.04800
PSA:
45.82000
MDL:
MFCD00007366
EINECS:
202-808-0
BRN:
1906911
危险品标志:

ToxicT;DangerousN;

风险术语:

R23/24/25;R33;R51/53

安全术语:

S28A;S37;S45

分子结构式:
SDS:
查看

4-硝基甲苯 制备方法及用途

制备方法

1.将甲苯加入硝化反应釜,冷却至25℃以下,加入配好的混酸(硝酸25%~30%,硫酸55%~58%及水20%~21%),温度上升,调节温度不超过50℃以上,继续搅拌1~2 h反应结束,静置6 h,将生成的硝基苯分离、水洗、碱洗,粗制硝基甲苯中含有邻硝基甲苯、对硝基甲苯和间硝基甲苯。将粗制硝基甲苯经真空蒸馏,分离大部分的邻硝基甲苯,残余的含有较多的对硝基甲苯馏分再经减压蒸馏分出,经冷却、结晶分离而得对硝基甲苯,而间位硝基苯在分离对位体时的母液中经积累后再精馏而取得。

合成制备方法

1.将甲苯加入硝化反应釜,冷却至25℃以下,加入配好的混酸(硝酸25%~30%,硫酸55%~58%及水20%~21%),温度上升,调节温度不超过50℃以上,继续搅拌1~2 h反应结束,静置6 h,将生成的硝基苯分离、水洗、碱洗,粗制硝基甲苯中含有邻硝基甲苯、对硝基甲苯和间硝基甲苯。将粗制硝基甲苯经真空蒸馏,分离大部分的邻硝基甲苯,残余的含有较多的对硝基甲苯馏分再经减压蒸馏分出,经冷却、结晶分离而得对硝基甲苯,而间位硝基苯在分离对位体时的母液中经积累后再精馏而取得。

用途简介

1.用于生产DSD酸、对硝基苯甲酸、对硝基苯乙酸、对硝基甲苯邻磺酸,对甲基苯胺、2,4-二硝基甲苯、4-甲基-1,3-苯二胺、2-氨基-4-氯-5-甲基苯磺酸、4,4’-二氨基二苯乙烯-2,2’-二磺酸以及2-氯-4-氨基甲苯,制造弱酸性绿GS,红色基GL。 2.用于染料合成。

用途

1.用于生产DSD酸、对硝基苯甲酸、对硝基苯乙酸、对硝基甲苯邻磺酸,对甲基苯胺、2,4-二硝基甲苯、4-甲基-1,3-苯二胺、2-氨基-4-氯-5-甲基苯磺酸、4,4’-二氨基二苯乙烯-2,2’-二磺酸以及2-氯-4-氨基甲苯,制造弱酸性绿GS,红色基GL。

2.用于染料合成。[26]

4-硝基甲苯 物化性质

外观与性状:
淡黄色晶体
密度:
1.392 g/mL at 25 °C(lit.)
熔点:
52-54 °C(lit.)
沸点:
238 °C(lit.)
闪点:
223 °F
水溶解性:
0.35 g/L (20 ºC)
折射率:
1.5382
蒸汽密度:
4.7 (vs air)
存储条件/存储方法:
库房通风低温干燥,与氧化剂、酸类分开存放
稳定性相关:

1.稳定性[20]  稳定

2.禁配物[21]  强氧化剂、强还原剂、强碱

3.避免接触的条件[22]  受热

4.聚合危害[23]  不聚合

5.分解产物[24]  氮氧化物

其它信息:

1.性状:淡黄色结晶[1]

2.熔点(℃):51.9[2]

3.沸点(℃):238.3[3]

4.相对密度(水=1):1.29(20℃)[4]

5.相对蒸气密度(空气=1):4.72[5]

6.饱和蒸气压(kPa):0.013(20℃)[6]

7.燃烧热(kJ/mol):-3714.3[7]

8.临界压力(MPa):3.8[8]

9.辛醇/水分配系数:2.37[9]

10.闪点(℃):106(CC)[10]

11.引燃温度(℃):390[11]

12.爆炸上限(%):7.6[12]

13.爆炸下限(%):1.6[13]

14.溶解性:不溶于水,易溶于乙醇、乙醚、苯。[14]

4-硝基甲苯 安全信息

包装等级:
II
风险类别:
6.1
海关代码:
29042000
WGK_Germany:
2
德国有关水污染物质的分类清单
危险类别码:
R23/24/25;R33;R51/53
安全说明:
S28-S37-S45-S61-S28A-S27-S16
RTECS号:
XT3325000
安全标志:
S16:远离火源。
S27:立刻除去所有污染衣物。
S28:接触皮肤之后,立即使用大量皂液洗涤。
S37:使用合适的防护手套。
S45:出现意外或者感到不适,立刻到医生那里寻求帮助(最好带去产品容器标签)。
S61:避免排放到环境中。参考专门的说明/安全数据表。
危险标志:
T:Toxic;N:Dangerousfortheenvironment;

4-硝基甲苯 毒理性

CHEMICAL IDENTIFICATION

RTECS NUMBER :
XT3325000
CHEMICAL NAME :
Toluene, p-nitro-
CAS REGISTRY NUMBER :
99-99-0
LAST UPDATED :
199712
DATA ITEMS CITED :
37
MOLECULAR FORMULA :
C7-H7-N-O2
MOLECULAR WEIGHT :
137.15
WISWESSER LINE NOTATION :
WNR D1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
1960 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
975 mg/m3
TOXIC EFFECTS :
Brain and Coverings - recordings from specific areas of CNS Liver - fatty liver degeneration Blood - methemoglobinemia-carboxyhemoglobin
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
>16 gm/kg
TOXIC EFFECTS :
Lungs, Thorax, or Respiration - other changes Liver - fatty liver degeneration Nutritional and Gross Metabolic - weight loss or decreased weight gain
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
940 mg/kg
TOXIC EFFECTS :
Behavioral - ataxia Lungs, Thorax, or Respiration - cyanosis Lungs, Thorax, or Respiration - respiratory stimulation
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
1231 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LC50 - Lethal concentration, 50 percent kill
ROUTE OF EXPOSURE :
Inhalation
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
419 mg/m3
TOXIC EFFECTS :
Brain and Coverings - recordings from specific areas of CNS Liver - fatty liver degeneration Blood - methemoglobinemia-carboxyhemoglobin
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
1750 mg/kg
TOXIC EFFECTS :
Brain and Coverings - recordings from specific areas of CNS Liver - fatty liver degeneration Blood - methemoglobinemia-carboxyhemoglobin
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
65793 mg/kg/13W-C
TOXIC EFFECTS :
Kidney, Ureter, Bladder - changes in bladder weight Blood - changes in other cell count (unspecified) Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - transaminases
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
73983 mg/kg/13W-C
TOXIC EFFECTS :
Liver - changes in liver weight Nutritional and Gross Metabolic - weight loss or decreased weight gain
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
8400 mg/kg/14D-I
TOXIC EFFECTS :
Liver - changes in liver weight Endocrine - changes in spleen weight Immunological Including Allergic - decrease in humoral immune response
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
65793 mg/kg
SEX/DURATION :
male 13 week(s) pre-mating
TOXIC EFFECTS :
Reproductive - Paternal Effects - spermatogenesis (incl. genetic material, sperm morphology, motility, and count) Reproductive - Paternal Effects - testes, epididymis, sperm duct
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Intraperitoneal
DOSE :
30 mg/kg
SEX/DURATION :
female 1 day(s) pre-mating
TOXIC EFFECTS :
Reproductive - Maternal Effects - uterus, cervix, vagina

MUTATION DATA

TYPE OF TEST :
Sister chromatid exchange
TEST SYSTEM :
Rodent - hamster Ovary
REFERENCE :
EMMUEG Environmental and Molecular Mutagenesis. (Alan R. Liss, Inc., 41 E. 11th St., New York, NY 10003) V.10- 1987- Volume(issue)/page/year: 10(Suppl 10),1,1987 *** REVIEWS *** ACGIH TLV-TWA 11 mg/m3 (2 ppm) (skin) DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 IARC Cancer Review:Animal Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 65,409,1996 IARC Cancer Review:Human Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 65,409,1996 IARC Cancer Review:Group 3 IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 65,409,1996 *** U.S. STANDARDS AND REGULATIONS *** OSHA PEL (Gen Indu):8H TWA 5 ppm (30 mg/m3) (skin) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1910.1000,1994 OSHA PEL (Construc):8H TWA 5 ppm (30 mg/m3) (skin) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1926.55,1994 OSHA PEL (Shipyard):8H TWA 5 ppm (30 mg/m3) (skin) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 OSHA PEL (Fed Cont):8H TWA 5 ppm (30 mg/m3) (skin) CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 41,50-204.50,1994 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-AUSTRALIA:TWA 2 ppm (11 mg/m3);Skin JAN 1993 OEL-BELGIUM:TWA 2 ppm (11 mg/m3);Skin JAN 1993 OEL-DENMARK:TWA 2 ppm (12 mg/m3);Skin 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 RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO p-NITROTOLUENE-air:10H TWA 2 ppm (Sk) REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X6955 No. of Facilities: 21 (estimated) No. of Industries: 1 No. of Occupations: 5 No. of Employees: 4354 (estimated) No. of Female Employees: 729 (estimated)
毒理学数据:

1.急性毒性[15]

LD50:1960mg/kg(大鼠经口);>16g/kg(大鼠经皮)

2.刺激性  暂无资料

3.致突变性[16]  微生物致突变:鼠伤寒沙门菌10μg/皿。微生物致突变试验:鼠伤寒沙门菌10μg/皿。程序外DNA合成:大鼠肝100μg/L。

4.致癌性[17]  IARC致癌性评论:G3,对人及动物致癌性证据不足。

生态数据:

1.生态毒性[18]

LC50:74mg/L(48h),51mg/L(96h)(青鳉);73mg/L(96h)(高体雅罗鱼);19mg/L(96h)(黑头呆鱼);7.5mg/L(48h)(水蚤)

EC50:82mg/L(24h)(梨形四膜虫);22mg/L(单细胞绿藻)

2.生物降解性[19] MITI-I测试,初始浓度100ppm,污泥浓度30ppm,2周后降解0.8%。

3.非生物降解性 暂无资料

4-硝基甲苯 MSDS

第一部分:化学品名称

4-硝基甲苯 分子结构与计算化学数据

分子结构数据

1、摩尔折射率:37.62

2、摩尔体积(cm3/mol):117.5

3、等张比容(90.2K):300.4

4、表面张力(dyne/cm):42.6

5、极化率:14.91

计算化学数据

1.疏水参数计算参考值(XlogP):无

2.氢键供体数量:0

3.氢键受体数量:2

4.可旋转化学键数量:0

5.互变异构体数量:无

6.拓扑分子极性表面积45.8

7.重原子数量:10

8.表面电荷:0

9.复杂度:122

10.同位素原子数量:0

11.确定原子立构中心数量:0

12.不确定原子立构中心数量:0

13.确定化学键立构中心数量:0

14.不确定化学键立构中心数量:0

15.共价键单元数量:1

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