N,N-二甲基乙酰胺

外观与性状：

透明无色液体

密度：

1.156 g/mL at 25 °C(lit.)

熔点：

-20 °C

沸点：

95-96 °C(lit.)

闪点：

40 °F

水溶解性：

miscible

折射率：

n20/D 1.439(lit.)

蒸汽压：

0.107mmHg at 25°C

蒸汽密度：

3.89 (vs air)

存储条件/存储方法：

包装完整、轻装轻卸,库房通风、远离明火、高温、与氧化剂、酸分开存放

稳定性相关：

1.化学性质化学性质与N,N-二甲基甲酰胺非常相似，是一种有代表性的酰胺类溶剂。在无酸、碱存在时，常压下加热至沸腾不分解，因此可以在常压下蒸馏。水解速度很慢，含有5%水的N,N-二甲基乙酰胺在95℃加热140小时，只有0.02%发生水解。但有酸碱存在时，水解速度增加。强碱存在时加热发生皂化。

2. 存在于烤烟烟叶中。

 

其它信息：

1.       性状：无色透明液体。

2.       沸点（ºC,101.3kPa）：164.5~166， 62~63（1.6kpa）

3.       熔点（ºC）：-20

4.       相对密度（g/mL,25/4ºC）：0.9366

5.       折射率（20ºC）：1.4384

6.       折射率（25ºC）：1.4356

7.       黏度（mPa·s,25ºC）：0.92

8.       黏度（mPa·s,30ºC）：0.838

9.       闪点（ºC,开口）：70

10.    燃点（ºC）：420

11.    蒸发热（KJ/mol,25ºC）：53.2

12.    蒸发热（KJ/mol,b.p.）：43.375

13.    熔化热（KJ/mol）：10.43

14.    燃烧热（KJ/mol）：2546

15.    比热容（KJ/(kg·K),20ºC,定压）：2.02

16.    临界温度（ºC）：364

17.    临界压力（MPa）：3.9

18.    蒸气压（kPa,25ºC）：0.17

19.    热导率（W/(m·K),20ºC）：0.155

20.    爆炸下限（%,V/V,160ºC）：2.0

21.    爆炸上限（%,V/V,160ºC）：11.5

22.    溶解性：对多种有机、无机物质都有良好的溶解能力。能与水、醚、酯、酮、芳香族化合物混溶。可溶解不饱和脂肪烃，对饱和脂肪烃难溶。能溶解丙烯腈共聚物、乙烯系树脂、纤维素衍生物、苯乙烯树脂、线型聚酯树脂等。

海关代码：

2924199090

WGK_Germany：

3
德国有关水污染物质的分类清单

危险类别码：

R20/21;R61

安全说明：

S16-S24-S53-S45

RTECS号：

TX9625000

安全标志：

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）。
S53:避免暴露——使用前先阅读专门的说明。
S26:万一接触眼睛，立即使用大量清水冲洗并送医诊治。
S28:接触皮肤之后，立即使用大量皂液洗涤。
S36:穿戴合适的防护服装。

危险标志：

T:Toxic

CHEMICAL IDENTIFICATION

RTECS NUMBER :

AB7700000

CHEMICAL NAME :

Acetamide, N,N-dimethyl-

CAS REGISTRY NUMBER :

127-19-5

LAST UPDATED :

199712

DATA ITEMS CITED :

65

MOLECULAR FORMULA :

C4-H9-N-O

MOLECULAR WEIGHT :

87.14

WISWESSER LINE NOTATION :

1VN1&1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :

Open irritation test

ROUTE OF EXPOSURE :

Administration onto the skin

SPECIES OBSERVED :

Rodent - rabbit

TYPE OF TEST :

Standard Draize test

ROUTE OF EXPOSURE :

Administration into the eye

SPECIES OBSERVED :

Rodent - rabbit

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

4300 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 :

2475 ppm/1H

TOXIC EFFECTS :

Nutritional and Gross Metabolic - weight loss or decreased weight gain

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Administration onto the skin

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

>2 gm/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Intraperitoneal

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

2750 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Intravenous

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

2640 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Unreported

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

3 gm/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

4620 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 :

7200 mg/m3

TOXIC EFFECTS :

Behavioral - ataxia Lungs, Thorax, or Respiration - other changes Liver - other changes

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Administration onto the skin

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

9600 mg/kg

TOXIC EFFECTS :

Behavioral - food intake (animal) Lungs, Thorax, or Respiration - other changes Liver - other changes

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Intraperitoneal

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

2800 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Intravenous

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

3020 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Administration onto the skin

SPECIES OBSERVED :

Rodent - rabbit

DOSE/DURATION :

2240 mg/kg

TOXIC EFFECTS :

Skin and Appendages - primary irritation (after topical exposure)

TYPE OF TEST :

LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :

Intravenous

SPECIES OBSERVED :

Rodent - rabbit

DOSE/DURATION :

8340 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 :

Intravenous

SPECIES OBSERVED :

Bird - chicken

DOSE/DURATION :

12 gm/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :

LCLo - Lowest published lethal concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Mammal - species unspecified

DOSE/DURATION :

406 ppm

TOXIC EFFECTS :

Liver - fatty liver degeneration

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

364 mg/kg/26W-I

TOXIC EFFECTS :

Liver - other changes Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - other esterases 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 - rat

DOSE/DURATION :

4500 mg/kg/90D-C

TOXIC EFFECTS :

Blood - changes in erythrocyte (RBC) count Blood - changes in leukocyte (WBC) count

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

103 ppm/6H/26W-I

TOXIC EFFECTS :

Liver - other changes

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

300 ppm/6H/12D-I

TOXIC EFFECTS :

Blood - changes in serum composition (e.g. TP, bilirubin, cholesterol) Nutritional and Gross Metabolic - weight loss or decreased weight gain Biochemical - Metabolism (Intermediary) - lipids including transport

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

120 ppm/6H/64D-I

TOXIC EFFECTS :

Liver - changes in liver weight

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - rat

DOSE/DURATION :

100 ppm/6H/2Y-I

TOXIC EFFECTS :

Liver - other changes

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

700 mg/m3/4H/2W-I

TOXIC EFFECTS :

Blood - pigmented or nucleated red blood cells Nutritional and Gross Metabolic - weight loss or decreased weight gain Related to Chronic Data - death

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

SPECIES OBSERVED :

Rodent - mouse

DOSE/DURATION :

375 ppm/6H/78W-I

TOXIC EFFECTS :

Sense Organs and Special Senses (Eye) - retinal changes (pigmentary depositions, retinitis, other) Liver - other changes Liver - changes in liver weight

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Administration onto the skin

SPECIES OBSERVED :

Mammal - dog

DOSE/DURATION :

113 gm/kg/6W-I

TOXIC EFFECTS :

Liver - fatty liver degeneration Related to Chronic Data - death

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Administration onto the skin

SPECIES OBSERVED :

Rodent - rabbit

DOSE/DURATION :

8 gm/kg/4D-I

TOXIC EFFECTS :

Liver - other changes Nutritional and Gross Metabolic - weight loss or decreased weight gain Related to Chronic Data - death

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

DOSE :

5600 mg/kg

SEX/DURATION :

female 6-19 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)

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

DOSE :

5600 mg/kg

SEX/DURATION :

female 6-19 day(s) after conception

TOXIC EFFECTS :

Reproductive - Specific Developmental Abnormalities - musculoskeletal system Reproductive - Specific Developmental Abnormalities - cardiovascular (circulatory) system Reproductive - Specific Developmental Abnormalities - homeostasis

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

DOSE :

288 ppm/6H

SEX/DURATION :

male 10 day(s) pre-mating

TOXIC EFFECTS :

Reproductive - Paternal Effects - testes, epididymis, sperm duct

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

DOSE :

281 ppm/6H

SEX/DURATION :

female 6-15 day(s) after conception

TOXIC EFFECTS :

Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus)

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

DOSE :

300 ppm/6H

SEX/DURATION :

female 10 week(s) pre-mating - 3 week(s) post-birth

TOXIC EFFECTS :

Reproductive - Effects on Newborn - growth statistics (e.g.%, reduced weight gain)

TYPE OF TEST :

TCLo - Lowest published toxic concentration

ROUTE OF EXPOSURE :

Inhalation

DOSE :

282 ppm/6H

SEX/DURATION :

female 6-15 day(s) after conception

TOXIC EFFECTS :

Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus)

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Administration onto the skin

DOSE :

2400 mg/kg

SEX/DURATION :

female 10-11 day(s) after conception

TOXIC EFFECTS :

Reproductive - Effects on Embryo or Fetus - fetal death Reproductive - Specific Developmental Abnormalities - Central Nervous System

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Intraperitoneal

DOSE :

2 mg/kg

SEX/DURATION :

female 1 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)

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

DOSE :

3900 mg/kg

SEX/DURATION :

female 6-18 day(s) after conception

TOXIC EFFECTS :

Reproductive - Specific Developmental Abnormalities - eye/ear Reproductive - Specific Developmental Abnormalities - craniofacial (including nose and tongue) Reproductive - Specific Developmental Abnormalities - musculoskeletal system

TYPE OF TEST :

TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :

Oral

DOSE :

3900 mg/kg

SEX/DURATION :

female 6-18 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)

TYPE OF TEST :

DNA inhibition

MUTATION DATA

TYPE OF TEST :

Sister chromatid exchange

TEST SYSTEM :

Rodent - hamster Ovary

REFERENCE :

APHGAO Acta Pharmaceutica Hungarica. (Kultura, POB 149, H-1389 Budapest, Hungary) 1953- Adopts V.24 in 1955. Volume(issue)/page/year: 56,97,1986 *** REVIEWS *** ACGIH TLV-Not classifiable as a human carcinogen 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 ACGIH TLV-TWA 36 mg/m3 (10 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 *** U.S. STANDARDS AND REGULATIONS *** MSHA STANDARD-air:TWA 10 ppm (35 mg/m3) (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: 3,88,1971 OSHA PEL (Gen Indu):8H TWA 10 ppm (35 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 10 ppm (35 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 10 ppm (35 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 10 ppm (35 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 10 ppm (35 mg/m3);Skin JAN 1993 OEL-BELGIUM:TWA 10 ppm (36 mg/m3);Skin JAN 1993 OEL-DENMARK:TWA 10 ppm (35 mg/m3);Skin JAN 1993 OEL-FINLAND:TWA 10 ppm (35 mg/m3);STEL 20 ppm (70 mg/m3);Skin JAN 1993 OEL-FRANCE:TWA 10 ppm (35 mg/m3);Skin JAN 1993 OEL-GERMANY:TWA 10 ppm (35 mg/m3);Skin JAN 1993 OEL-THE NETHERLANDS:TWA 10 ppm (35 mg/m3);Skin JAN 1993 OEL-THE PHILIPPINES:TWA 10 ppm (35 mg/m3);Skin JAN 1993 OEL-SWITZERLAND:TWA 10 ppm (35 mg/m3);STEL 20 ppm ;Skin JAN 1993 OEL-UNITED KINGDOM:TWA 10 ppm (35 mg/m3);STEL 15 ppm ;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 DIMETHYL ACETAMIDE-air:10H TWA 10 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 : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 26095 No. of Facilities: 66 (estimated) No. of Industries: 5 No. of Occupations: 13 No. of Employees: 7658 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 26095 No. of Facilities: 907 (estimated) No. of Industries: 14 No. of Occupations: 27 No. of Employees: 28943 (estimated) No. of Female Employees: 15028 (estimated)

毒理学数据：

N,N-二甲基乙酰胺的燃烧范围在空气中100℃为1.70%～18.5%(体积)；200℃为1.45%～15.2%(体积)。属低毒类，嗅觉阈浓度165mg/m3。工作场所最高容许浓度71.2mg/m3。大鼠经口LD50为3.59g/kg。小鼠经口LC50为4.20g/kg。小鼠腹腔注射LC50为3920mg/kg。小鼠静脉注射LC50为5910mg/kg。动物急性中毒表现为活动减少，四肢无力，侧卧，呼吸急促。严重时出现四肢震颤性抽动。皮肤染毒局部发红，并出现烧灼现象。尸检见肺明显淤血和灶性出血。肝细胞浊肿变性和大块坏死，并伴有灶性巨细胞及蓝染物质的浸润。还可见有睾丸病理损害。

中国海关编码：2924199090

概述：

2924199090. 其他无环酰胺（包括无环氨基甲酸酯)(包括其衍生物及盐）. 增值税率:17.0%. 退税率:13.0%. 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, 包装

摘要/Summary：

2924199090. other acyclic amides (including acyclic carbamates) and their derivatives; salts thereof. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

分子结构数据

1、   摩尔折射率：24.33

2、   摩尔体积（cm³/mol）：98.9

3、   等张比容（90.2K）：222.0

4、   表面张力（dyne/cm）：25.3

5、   极化率（10^-24cm³）：9.64

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:1

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20.3

7.重原子数量:6

8.表面电荷:0

9.复杂度:58.6

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

• 
  N
• 
  N-二甲基乙酰胺红外图谱(IR1)
• 
  N
• 
  N-二甲基乙酰胺红外图谱(IR2)
• 
  N
• 
  N-二甲基乙酰胺质谱(MS)