Xylenes 二甲苯

CAS 1330-20-7 MFCD00077264

化学结构图

1330-20-7
SMILES: Cc1ccc(C)cc1

化学属性

Refractive indexn20/D 1.497(lit.)
Boiling Point136-140
Vapor Pressure18 mmHg ( 37.7 °C)
Flash Point29°(84°F)
TSCAYes
Melting Point-34
Autoignition Point867 °F
Vapor Density3.7 (vs air)
Appearance 对二甲苯、邻二甲苯,间二甲苯及乙苯的混合物。无色透明液体。溶于乙醇和乙醚,不溶于水。
Solubility<0.1 g/L (20 °C)
Density0.865
Mol. FormulaC8H10
Mol. Weight106.00
Danger-Level甲类

别名和识别编码

Chemical NameXylenes
Synonym Benzene, dimethyl- C12-14-TERT-ALKYLAMINES, CMPDS WITH (2-BENZOTHIAZOLYLTHIO)-BUTANEDOIC ACID (2:1) Dimethylbenzene NAPHTHA SOLVENT SEALIT SEALANT XYLENE XYLENES XYLOL Xiloli ai3-02209-x caswellno906 dimethyl-benzen epapesticidechemicalcode086802 二甲苯 二甲苯, SEMICONDUCTOR GRADE 二甲苯类化合物
CAS Number1330-20-7
PubChem Substance ID329753989
EC Number215-535-7
MDL NumberMFCD00077264
Merck Number14,10081
Beilstein Registry Number1901563
Chemical Name Translation二甲苯
Wiswesser Line Notation1R X1
LabNetwork Molecule IDLN02127019
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分类

  • ACS and Reagent Grade Solvents, Amber Glass Bottles, Carbon Steel Cans with NPT Threads, Reagent, Reagent Grade Solvents, Semi-Bulk Solvents, Solvent Bottles, Solvent Packaging Options, Solvent by Application, Solvents
  • {SA} ACS Grade, ACS Grade Solvents, ACS and Reagent Grade Solvents, PVC Coated Bottles, Solvent Bottles, Solvent Packaging Options, Solvent by Application, Solvents
  • {SNA} ACS Grade, ACS Grade Solvents, ACS and Reagent Grade Solvents, Amber Glass Bottles, Carbon Steel Cans with NPT Threads, Core Bioreagents, Hem

产品应用

  • 溶剂、测定许多有机化合物中水分,显微镜清洁剂。硅元件和热敏电阻等的清洗剂。混合二甲苯是邻;间;对二甲苯和乙基苯的混合物。作为化学原料使用时,可将各异构体预先分离。混合物主要用作油漆涂料的溶剂和航空汽油添加剂。

相关文献及参考

  • Merck: 14,10081 Beilstein: 5,360
  • Merck: 14,10081

安全信息

GHS Symbol
WGK Germany2
Hazard Codes 3
Hazard statements
  • H312+H332
  • H315 Causes skin irritation 会刺激皮肤
  • H304 May be fatal if swallowed and enters airways 吞食和进入呼吸道可能致命
  • H335 May cause respiratory irritation 可能导致呼吸道刺激
  • H412 Harmfutoaquaticlifewithlonglastingeffects 对水生生物有害并具有长期影响。
  • H319 Causes serious eye irritation 严重刺激眼睛
  • H373 May causes damage to organs through prolonged or repeated exposure 长期或频繁接触可能会损伤器官
  • H226 Flammable liquid and vapour 易燃液体和蒸气
  • H332 Harmful if inhaled 吸入有害
  • H312 Harmful in contact with skin 皮肤接触有害
  • H331 Toxic if inhaled 吸入中毒
Personal Protective Equipment Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
RTECSZE2100000
Precautionary statements
  • P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. 远离热源/火花/明火/热的表面。——禁止吸烟。
  • P240 Ground/bond container and receiving equipment. 与地面接触/连接集装箱和接受设备。
  • P280 Wear protective gloves/protective clothing/eye protection/face protection. 戴防护手套/防护服/眼睛的保护物/面部保护物。
  • P302+P352
  • P304+P340
Signal word Danger Warning
Packing GroupIII
UN Number 1307 UN 1307 3/PG 3 UN1307
Risk Statements
  • R10 Flammable 易燃
  • R20/21 Harmful by inhalation and in contact with skin 吸入及与皮肤接触有害
  • R36/38 Irritating to eyes and skin 对眼睛和皮肤有刺激性
  • R38 Irritating to skin 刺激皮肤
  • R48/20
  • R65 Harmful: may cause lung damage if swallowed 若吞咽可能伤害肺部器官
Safety Statements
  • S25 Avoid contact with eyes 避免眼睛接触;
  • S36/37 Wear suitable protective clothing and gloves 穿戴适当的防护服和手套;
  • S60 This material and its container must be disposed of as hazardous waste 该物质及其容器必须作为危险废物处置;
  • S62 If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label where possible 吞食后不要催吐:立即求医并出示该容器或标签;
Storage condition 密封阴凉处保存。 Flammables area
Hazard Class3
Warnings 危化品目录(2015)
TYPE OF TEST            : TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE       : Inhalation
SPECIES OBSERVED        : Human
DOSE/DURATION           : 200 ppm
TOXIC EFFECTS :
   Sense Organs and Special Senses (Olfaction) - effect, not otherwise
   specified
   Sense Organs and Special Senses (Eye) - conjunctive irritation
   Lungs, Thorax, or Respiration - other changes
REFERENCE :
   JIHTAB Journal of Industrial Hygiene and Toxicology.  (Cambridge, MA)
   V.18-31, 1936-49.  For publisher information, see AEHLAU.
   Volume(issue)/page/year: 25,282,1943

TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Intravenous
SPECIES OBSERVED        : Rodent - rabbit
DOSE/DURATION           : 129 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   HAEMAX Haematologica.  (Il Pensiero Scientifico Editore, Via Panama 48,
   I-00198, Rome, Italy) V.1-    1920-  Volume(issue)/page/year: 58,491,1973

TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Human
DOSE/DURATION           : 50 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   YAKUD5 Gekkan Yakuji.  Pharmaceuticals Monthly.  (Yakugyo Jihosha, Inaoka
   Bldg., 2-36 Jinbo-cho, Kanda, Chiyoda-ku, Tokyo 101, Japan)  V.1-   1959-
   Volume(is

TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Mammal - species unspecified
DOSE/DURATION           : 4300 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   GTPZAB Gigiena Truda i Professional'nye Zabolevaniya.  Labor Hygiene and
   Occupational Diseases. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR)
   V.1-36, 1957-1992.

TYPE OF T

TYPE OF TEST            : TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE       : Inhalation
SPECIES OBSERVED        : Rodent - mouse
DOSE                    : 4000 ppm/6H
SEX/DURATION            : female 6-12 day(s) after conception
TOXIC EFFECTS :
   Reproductive - Effects on Newborn - growth statistics (e.g.%, reduced weight
   gain)
   Reproductive - Effects on Newborn - physical
REFERENCE :
   TJADAB Teratology, The International Journal of Abnormal Development. (Alan
   R. Liss, Inc., 41 E. 11th St., New York, NY 10003)

TYPE OF TEST            : TCLo - Lowest published toxic concentration
ROUTE OF EXPOSURE       : Inhalation
SPECIES OBSERVED        : Rodent - rat
DOSE                    : 50 mg/m3/6H
SEX/DURATION            : female 1-21 day(s) after conception
TOXIC EFFECTS :
   Reproductive - Fertility - post-implantation mortality (e.g. dead and/or
   resorbed implants per total number of implants)
   Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death,
   e.g., stunted fetus)
   Reproductive - Specific Developmental Abnormalities - craniofacial
   (including nose and tongue)
REFERENCE :
   JHEMA2 Journal of Hygiene, Epidemiology, Microbiology, and Immunology.
   (Avicenum, Malostranske namesti 28, 11802 Prague 1, Czechoslovakia)  V.1-
   1957-  Volume(issue)/page/year: 27,337,1983

TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Inhalation
SPECIES OBSERVED        : Rodent - rat
DOSE                    : 200 ppm/6H
SEX/DURATION            : female 4-20 day(s) after conception
TOXIC EFFECTS :
   Reproductive - Specific Developmental Abnormalities - musculoskeletal system
   Reproductive - Effects on Newborn - behavioral
REFERENCE :
   PHTOEH Pharmacology and Toxicology (Copenhagen).  (Munksgaard International
   Pub., POB 2148, DK-1016 Copenhagen K, Denmark)  V.60-    1987-
   Volume(issue)/page/year: 73,20,1993

Restrict 危险品

其他信息

  • 刺激数据:皮肤- 兔子 500 毫克/ 24小时 中度; 眼- 兔子 5 毫克/ 24小时 重度
  • 下游产品:N,N'-二苯基联苯二胺 --> 杨梅醛 --> 哒螨灵乳油 --> 1,4-苯二甲胺 --> 氨基树脂清漆 --> 异丙草胺 --> 农乳 656L --> N-甲基-1-甲硫基-2-硝基乙烯胺 --> 异喹啉-3-甲酸甲酯 --> 二甲代苯胺 (异构体混合物) --> 农乳 6502 --> 农乳0207 --> 农乳 0265 --> 可逆示温涂料(IV) --> 水乳型聚氨酯涂饰剂PU-II系列 --> 氨基烘干清漆 --> 甲基柏木醚 --> 2-氨基-4,6-二甲基吡啶 --> 可降解纺织染整整理剂 --> 二乙基苯 --> 木船防污漆 --> 灭杀毙乳油 --> 吡草胺 --> 农乳 BCL --> 氯甲基丁基醚 --> 4-苯氧基-2,6-二异丙基苯基硫脲 --> N-乙酰基高哌嗪 --> 3-苄氧基苯酚 --> 精禾草克乳油 --> 氯甲基异丙基醚 --> 甲基苯甲醛 --> 马·杀乳油 --> LZ-850防火硅酮密封胶 --> 檀香醇 --> 还原紫 3 --> 农乳 BSL --> 丙烯酸马来酸共聚物 --> 乙酸檀香酯
  • 爆炸物危险特性:与空气混合可爆炸
  • 无色澄清易流动的液体。系邻、间、对三种同分异构体的混合物。有特殊气味。能燃烧。能与无水乙醇、醚和氯仿混合,几乎不溶于水。易燃,蒸气能与空气形成爆炸性混合物,爆炸极限约为1%-7%(积)。低毒,半数致死浓度(大鼠,吸入)0.67%/4h。有刺激性。蒸气高浓度时有麻醉性。
  • 用途四:溶剂、测定许多有机化合物中水分,显微镜清洁剂。硅元件和热敏电阻等的清洗剂。混合二甲苯是邻;间;对二甲苯和乙基苯的混合物。作为化学原料使用时,可将各异构体预先分离。混合物主要用作油漆涂料的溶剂和航空汽油添加剂。
  • MOL 文件:1330-20-7.mol
  • 残留与蓄积:在职业性接触中,二甲苯主要经呼吸道进入身体。对全部二甲苯的异构体而言,由肺吸收其蒸气的情况相同,总量达60%~70%,在整个的接触 时期中,这个吸收量比较恒定。二甲苯溶液可经完整皮肤以平均吸收率为2.25µg/(cm3·min)(范围0.7~4.3µg/(cm3·min))被吸 收,二甲苯蒸气的经皮吸收与直接接触液体相比是微不足道的。二甲苯的残留和蓄积并不严重,上面我们已经说过进入人体的二甲苯,可以在 人体的NADP(转酶II)和NAD(转酶I)存在下生成甲基苯甲酸,然后与甘氨酸结合形成甲基马尿酸在18小时内几乎全部排出体外。即使是吸入后残 留在肺部的3%-6%的二甲苯,也在接触后的3小时内(半衰期为0.5~1小时)全部被呼出体外。评价接触二甲苯的残留试验,主要是测定尿内甲基 马尿酸的含量,也有人建议测
  • 用途三:混合二甲苯是邻、间、对二甲苯和乙基苯的混合物。作为化学原料使用时,可将各异构体预先分离。混合物主要用作油漆涂料的溶剂和航空汽油添加剂。
  • 方法一:1.炼焦副产回收苯高温炼焦副产的高温焦油中,含有一部分苯。首先经初馏塔初馏,塔顶得轻苯,塔底得重苯(重苯用作制取古马隆树脂的原料)。轻苯先经初馏塔分离,塔底混合馏分经酸碱洗涤除去杂质,然后进吹苯塔蒸吹,再经精馏塔精馏得纯苯。2.铂重整法用常压蒸馏得到的轻汽油(初馏点约138℃),截取大于65℃馏分,先经含钼催化剂,催化加氢脱出有害杂质,再经铂催化剂进行重整,用二乙二醇醚溶剂萃取,然后再逐塔精馏,得到苯、甲苯、二甲苯等产物。
  • 毒性以及对人体健康的危害:二甲苯具有中等毒性。经皮肤吸收后,对健康的影响远比苯小。若不慎口服了二甲苯或含有二甲苯溶剂时,即强烈刺激食道和胃,并引起呕吐 ,还可能引起血性肺炎,应立即饮入液体石蜡,延医诊治。二甲苯蒸气对小鼠的LC为6000*
  • 毒性分级:中毒
  • 二甲苯同分异构体:二甲苯是苯环上两个氢原子被两个甲基取代的芳香烃。在焦化工业中,它是粗苯精制产品之一。二甲苯不溶于水,溶于乙醇和乙醚等有机溶剂。二甲苯有三种种同分异构体,即邻二甲苯、间二甲苯和对二甲苯,此外具有与二甲苯相同的元素组成的乙苯也是它的同分异构体。它们的分子式都为C8H10,分子量为106.16,其他物理性质则各不相同。 邻、间、对二甲苯三者化学性相近。侧链烷基可在催化剂作用下氧化,间二甲苯、对二

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