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氰乙酸甲酯

氰乙酸甲酯用途

用于有机合成、医药、染料的中间体和制备α-氰基丙烯酸酯瞬干性粘合剂

氰乙酸甲酯名称

[ CAS 号 ]:
105-34-0

[ 中文名 ]:
氰乙酸甲酯

[ 英文名 ]:
Methyl cyanoacetate

[中文别名 ]:

甲基氰乙酸酯

[英文别名 ]:

EINECS 203-288-8
Methylcyanoacetate
methyl 2-cyanoacetate
Acetic acid, 2-cyano-, methyl ester
Methyl cyanoacetate
Cyanoacetic acid methyl ester
MFCD00001939

氰乙酸甲酯物理化学性质

[ 密度 ]:
1.1±0.1 g/cm3

[ 沸点 ]:
208.0±8.0 °C at 760 mmHg

[ 熔点 ]:
-13 °C

[ 分子式 ]:
C₄H₅NO₂

[ 分子量 ]:
99.088

[ 闪点 ]:
86.5±5.2 °C

[ 精确质量 ]:
99.032028

[ PSA ]:
50.09000

[ LogP ]:
-0.47

[ 外观性状 ]:
透明无色至非常淡的黄色液体

[ 蒸汽密度 ]:
3.41 (vs air)

[ 蒸汽压 ]:
0.2±0.4 mmHg at 25°C

[ 折射率 ]:
1.402

[ 储存条件 ]:
室温，避光

[ 水溶解性 ]:
54 g/L (20 ºC)

氰乙酸甲酯MSDS

氰乙酸甲酯毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: AG4375000

CHEMICAL NAME :: Acetic acid, cyano-, methyl ester

CAS REGISTRY NUMBER :: 105-34-0

BEILSTEIN REFERENCE NO. :: 0773945

LAST UPDATED :: 199701

DATA ITEMS CITED :: 4

MOLECULAR FORMULA :: C4-H5-N-O2

MOLECULAR WEIGHT :: 99.10

WISWESSER LINE NOTATION :: NC1VO1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

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

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 200 mg/kg

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

REFERENCE :: NTIS** National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. Volume(issue)/page/year: AD277-689

TYPE OF TEST :: LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - guinea pig

DOSE/DURATION :: 400 mg/kg

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

REFERENCE :: 85JCAE "Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986 Volume(issue)/page/year: -,920,1986 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X4945 No. of Facilities: 17 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 1327 (estimated) No. of Female Employees: 255 (estimated)

氰乙酸甲酯安全信息

[ 符号 ]:

GHS07

[ 信号词 ]:
Warning

[ 危害声明 ]:
H319

[ 警示性声明 ]:
P305 + P351 + P338

[ 个人防护装备 ]:
Eyeshields;Gloves

[ 危害码 (欧洲) ]:
Xi: Irritant;

[ 安全声明 (欧洲) ]:
S24/25

[ 危险品运输编码 ]:
3276

[ WGK德国 ]:
1

[ RTECS号 ]:
AG4375000

[ 包装等级 ]:
III

[ 危险类别 ]:
6.1(b)

[ 海关编码 ]:
2926909090

氰乙酸甲酯合成路线

氰乙酸甲酯上下游产品

氰乙酸甲酯上游产品

氰乙酸甲酯下游产品

氰乙酸甲酯制备

氰乙酸甲酯的合成主要有以下几种：一是氯乙酸先和氰化钠反应，生成的氰乙酸再与甲醇酯化得到；二是氯乙酸先与甲醇酯化，再与氰化钠反应生成；三是氰乙酸乙酯与甲醇发生酯交换得到。下面主要简述第二种合成方法：

1.氯乙酸与甲醇酯化法将氯乙酸和甲醇进行酯化反应，生成氯乙酸甲酯。经精馏后制得氯乙酸甲酯精制品，与氰化钠进行氰化反应制得粗品，然后经过滤、常压蒸馏、减压精馏得氰乙酸甲酯成品。

2.氰乙酸与甲醇酯化法将氰乙酸、甲醇、硫酸加入反应器中，加热回流3h，降温至10℃，加碳酸钠溶液中和，在132-136℃温度和2.133kPa下蒸馏，即得氰乙酸甲酯成品。

精制方法：用碳酸钾或无水硫酸钠干燥后分馏。

3.氰乙醇甲酯合成　在装有电动搅拌、温度计和滴液漏斗的250mL三口瓶中，加入55g氰化钠、55mL甲醇及少量相转移催化剂季铵盐，搅拌，加热至55℃时开始滴加自制的氯乙酸甲酯100g，15min滴完，保温反应3h，反应液经过滤后，先常压蒸馏蒸出溶剂甲醇，再减压蒸馏，收集88～90℃/2.666kPa的馏分，即为产品氰乙酸甲酯。

氰乙酸甲酯海关

[ 海关编码 ]: 2926909090

[ 中文概述 ]:
2926909090 其他腈基化合物. 增值税率:17.0% 退税率:9.0% 监管条件:无最惠国关税:6.5% 普通关税:30.0%

[ 申报要素 ]: 品名, 成分含量, 用途

[ Summary ]:
HS:2926909090 other nitrile-function compounds VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0%

氰乙酸甲酯文献

The EpiOcular Eye Irritation Test (EIT) for hazard identification and labelling of eye irritating chemicals: protocol optimisation for solid materials and the results after extended shipment.

Altern. Lab. Anim. 43 , 101-27, (2015)

The 7th Amendment to the EU Cosmetics Directive and the EU REACH Regulation have reinforced the need for in vitro ocular test methods. Validated in vitro ocular toxicity tests that can predict the hum...

Calcite and fluorite as catalyst for the Knövenagel condensation of malononitrile and methyl cyanoacetate under solvent-free conditions. Wada S and Suzuki H.

Tetrahedron Lett. 44(2) , 399-401, (2003)

Conformational isomerism in methyl cyanoacetate: A combined matrix-isolation infrared spectroscopy and molecular orbital study. Reva ID, et al

Phys. Chem. Chem. Phys. 3(19) , 4235-4241, (2011)

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