Ethyl Lactate 乳酸乙酯

CAS 97-64-3 MFCD00065359

化学结构图

97-64-3
SMILES: CCOC(=O)C(C)O

化学属性

Mol. FormulaC5H10O3
Mol. Weight118.13
Density1.031
Refractive index1.4110 to 1.4140
Flash Point53°C(lit.)
TSCAYes
Boiling Point154
Melting Point-26
Appearance 14 为-10°。易溶于乙醇、丙酮、乙醚、酯类等有机溶剂，与水混溶时有部分水解。小白鼠经口LD 2.5g/kg，ADI 无需特殊规定（FAO/WHO，1994）。 d 50 无色至微黄色透明液体，具有朗姆酒、水果和奶油的香气。凝固点-25℃，沸点154℃，比旋光度[a]

别名和识别编码

Chemical NameEthyl Lactate
CAS Number97-64-3
Alfabeta NameETHYLHYDROXYPROPANOATE 2-
MDL NumberMFCD00065359
Synonym (±)-Ethyl lactate {LY} (±)-Ethyl lactate (±)-Lactic acid ethyl ester (±)-Milchsäureethylester 1-hydroxyethanecarboxylicacid,ethylester 2-Hydroxypropanoic acid ethyl ester 2-Hydroxypropionic acid ethyl ester, Lactic acid ethyl ester 2-hydroxy-propanoic acid ethyl ester Acytol DL-Ethyllactat ETHYL 2-HYDROXYPROPIONATE Ethyl rac-lactate Ethyl alpha-hydroxypropionate Ethyl ester of lactic acid Ethyl lactate 98+ Ethyl-2-hydroxypropanat Ethyl-2-hydroxypropanoat L-Lactic acid ethyl ester Lactic acid ethyl ester; 2-Hydroxy-propanoic acid ethyl ester Milchsäureethylester dl-Lactic acid, ethyl ethyl DL-lactate {} {LY} (±)-Ethyl lactate {} {} {LY} (±)-Ethyl lactate {} {} {} {} {} {} {LY} (±)-Ethyl l
EC Number202-598-0
Merck Number3817
Beilstein Registry Number3(4)643
PubChem Substance ID7344
Reaxys-RN1209448
Chemical Name Translation乳酸乙酯
Wiswesser Line NotationQVY1&O2
LabNetwork Molecule IDLN00193556
InChIInChI=1S/C5H10O3/c1-3-8-5(7)4(2)6/h4,6H,3H2,1-2H3
Canonical SMILESCC(O)C(OCC)=O
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分类

  • {SNA} Alphabetica
  • {Chemicalbook} 食品添加剂: 食用香料（增香剂）: 天然等同香料和人造香料
  • {SNA} Alphabetical Listings, Certified Food Grade Products, Certified Natural Products, E-F, E-G, E-H, Flavors and Fragrances, Kosher Certified Products
  • {SNA} Alphabetical Listings,
  • {uni_hamburg} no charge; ester; alcohol; racemate; 1fragment
  • {SNA} A-F, A-L, Additional Standards,

相关文献及参考

  • Short: III/47
  • Short: III/38B
  • Silylation followed by reaction with MeLi gives a useful chiral synthon. For preparation and discussion of reactivity, see: Org. Synth. Coll., 9, 139 (1998):
  • For reaction with Diphenyl­phosphonic azide, A12124, in the prepartaion, with inversion, of ethyl (R)-2-azidopropionate, see: Org. Synth., 75, 31 (1997).
  • Ethyl (or isobutyl) L-lactate adds to aryl methyl ketenes to give esters of 2-arylpropionic acids in which the chirality is transferred to the new chiral center to a surprising degree: J. Am. Chem. Soc., 111, 7650 (1989):

安全信息

Warnings 危化品目录(2015) IRRITANT
RTECSOD5075000
UN Number
Risk Statements
Safety Statements
  • S39 Wear eye/face protection 戴眼睛/面孔保护装置；
  • S26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice 眼睛接触后，立即用大量水冲洗并征求医生意见；
  • S24 Avoid contact with skin 避免皮肤接触；
Packing GroupIII
Hazard Codes
GHS Symbol
WGK Germany1
Hazard statements
  • H226 Flammable liquid and vapour 易燃液体和蒸气
  • H318 Causes serious eye damage 严重伤害眼睛
  • H335 May cause respiratory irritation 可能导致呼吸道刺激
Personal Protective Equipment Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
Precautionary statements
  • P304+P340+P312
  • P501 Dispose of contents/container to..… 处理内容物/容器.....
  • P271 Use only outdoors or in a well-ventilated area.? 只能在室外或通风良好的地方使用。
  • P312 Call a POISON CENTER or doctor/physician if you feel unwell. 如果你感觉不适，呼叫解毒中心或医生/医师。
  • 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。
  • 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。
  • P304+P340
  • P303+P361+P353
  • P403+P233
Signal word
Hazard Class3 
TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Intraperitoneal
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 1 gm/kg
TOXIC EFFECTS :
   Behavioral - muscle weakness
   Lungs, Thorax, or Respiration - cyanosis
   Lungs, Thorax, or Respiration - other changes
REFERENCE :
   JPPMAB Journal of Pharmacy and Pharmacology.  (Pharmaceutical Soc. of Great
   Britain, 1 Lambeth High St., London SEI 7JN, UK)  V.1-    1949-
   Volume(issue)/page/year: 11,150,1959

TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Intravenous
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 600 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   JPETAB Journal of Pharmacology and Experimental Therapeutics.  (Williams &
   Wilkins Co., 428 E. Preston St., Baltimore, MD 21202)  V.1-    1909/10-
   Volume(issue)/page/year: 65,89,1939

TYPE OF TEST            : LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE       : Intramuscular
SPECIES OBSERVED        : Rodent - guinea pig
DOSE/DURATION           : 2605 mg/kg
TOXIC EFFECTS :
   Lungs, Thorax, or Respiration - dyspnea
REFERENCE :
   JPETAB Journal of Pharmacology and Experimental Therapeutics.  (Williams &
   Wilkins Co., 428 E. Preston St., Baltimore, MD 21202)  V.1-    1909/10-
   Volume(issue)/page/year: 76,189,1942

TYPE OF TEST

TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - mouse
DOSE/DURATION           : 2500 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   JPETAB Journal of Pharmacology and Experimental Therapeutics.  (Williams &
   Wilkins Co., 428 E. Preston St., Baltimore, MD 21202)  V.1-    1909/10-
   Volume(issue)/page/year

Restrict 危险品
Storage condition Store at room temperature {LY} Store at room temperature {} {LY} Store at room temperature {} {} {LY} Store at room temperature {} {} {} {LY} Store at room temperature {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature

其他信息

  • 毒性:ADI不作特殊规定(FAO/WHO，1994)。 GRAS(FEMA)。 LD 50 2500mg/kg(小鼠，经口)。
  • 图谱信息:乳酸乙酯(97-64-3)核磁图( 13 CNMR) 乳酸乙酯(97-64-3)红外图谱(IR2) 乳酸乙酯(97-64-3)核磁图( 1 HNMR) 乳酸乙酯(97-64-3)质谱(MS) 乳酸乙酯(97-64-
  • FEMA:24
  • {Chem
  • 毒性分级:中毒
  • 下游产品:丙酮酸乙酯 --> 丙酮酸 -
  • 方法二:(1) 金属卤物催化法。用金属卤化物代替浓硫酸催化合成乳酸乙酯，收率65%-71%。 （2）稀土化合物催化法。将乙醇0.22-0.33mol、乳酸0.11mol，带水剂25mL和稀土化合物（与酸的摩尔比为1：100）加入烧瓶，回流反应2.5-3h，反应液蒸去过量的乙醇、带水剂和未反应的乳酸后减压蒸馏，收集产品，产率74%-79%。 （3）硫酸催化法。在硫酸催化下乳酸与过量的乙醇酯化而得乳酸乙酯；也可在四氯化碳中加热会流脱水24h，常压蒸馏回收过量的乙醇，再减压蒸馏出成品。 （4）固体酸催化法。NaY分子筛经水洗，干燥、高温灼烧，再用一定浓度NH4Cl溶液搅拌浸渍，进行离子交换，将NH4Y过滤、洗涤、干燥，550℃高温活化，即得固体酸HY。 然后将乳酸、乙醇、苯、HY加入反应瓶，HY/乳酸（质量比）=25/100，乳酸/乙醇（摩尔比）=1/3。在100-160℃下回流分水反应8-10h，酯化率60%以上。 （5）蒸馏酯化法。将225g80%的乳酸、475Ml(380g)95%的乙醇、100mL苯、2 mL浓硫酸和少许沸石加入分水蒸馏装置的烧瓶（1000 mL）中。加入反应液至沸，蒸汽（乙醇、苯和水）经蒸馏柱后进入冷凝器，分出水层后回流至蒸馏柱，柱顶温度稳定在64.9℃。当分出水层240g（其中含乙醇119g、水99g、苯22g）后，基本无水分出，柱顶温度升至68℃时，酯化结束。反应液冷却后加入6g无水醋酸钠中和硫酸，进行减压蒸馏。先全回流1h，然后在2.45Kpa的真空度下，控制回流比不小于5，柱顶温度58℃，蒸馏无色清亮的乳酸乙酯226g，收率96%。
  • 用途二:乳酸乙酯是我国规定允许使用的食用香料，常用于调制果香型、乳酸型食用和酒用香精。用量按正常生产需要，一般在酒类饮料中1000mg/kg、口香糖中580-3100 mg/kg、烘烤食品中71 mg/kg、糖果中28 mg/kg、冷饮中17 mg/kg。
  • 储运特性:库房通风低温干燥; 与氧化剂分开存放
  • Sigma Aldrich:97-64-3(sigmaaldrich)
  • 方法一:右旋体和左旋体分别以右旋乳
  • {Chemi
  • 灭火剂:干粉、干砂、二氧化碳、泡沫、1211灭火剂
  • 爆炸物危险特性:与空气混合可爆
  • 参考质量标准:GB 8317--87(强制性标准) 色状(GT-11-2) 无色至微黄色透明液体，色泽不超过标准比色液5号
  • 参考质量标准:GB 8317--87(强制性标准) 色状(GT-11-2) 无色至微黄色透明液体，色泽不超过标准比色液5号色标 香气 有柔和果香 相对密度(25/5℃) 1.029~1.032 折射率(20℃) 1.
  • 用途一:用作硝化纤维和乙酸纤维的溶剂，也用于香料工业
  • 使用限量:FEMA(mg/kg)：软饮料5.4；冷饮17；糖果28；焙烤食品71；布丁类8.3；胶姆糖580~3100；酒类1000；糖浆35。 适度为限(FDA§172．515，2000)。
  • 急性毒性:口服- 大鼠 LD50: 5000 毫克/ 公斤; 口服- 小鼠 LD50:2500 毫克/ 公斤
  • MSDS 信息:Lactic acid ethyl ester(97-64-3).msds
  • 类别:易燃液体
  • TCI Shanghai:乳酸乙酯 Ethyl
  • 用途三:GB 2760—96规定为允许使用的食用香料。载体溶剂。作为香料主要用于配制朗姆酒、牛奶、奶油、葡萄、果酒、椰子等型香精。

系列性分类

  1. Chemical Synthesis 化学合成
  2. Building Blocks 合成砌块
  3. Organic Building Blocks 有机砌块
  4. Carbonyl Compounds 羰基化合物
  5. Esters - Carbonyl Compounds
  1. Chemical Synthesis 化学合成
  2. Building Blocks 合成砌块
  3. Organic Building Blocks 有机砌块
  4. Carbonyl Compounds 羰基化合物
  5. Hydrazides - Carbonyl Compounds

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