ethyl (2S)-2-hydroxypropanoate L-乳酸乙酯

CAS 687-47-8 MFCD00004518

化学结构图

687-47-8
SMILES: CCOC(=O)[C@H](C)O

化学属性

Mol. FormulaC5H10O3
Mol. Weight118.13
Density1.042
Refractive index1.4120 to 1.4140
Boiling Point154 °C at 760 mmHg
Melting Point-26 °C
Autoignition Point752 °F
Vapor Density4.1 (vs air)
Vapor Pressure2 mmHg ( 20 °C)
Flash Point46°C(lit.)
Solubility可溶

别名和识别编码

Chemical NameL-Ethyl Lactate
Synonym Ethyl (S)-2-hydroxypropanoate {LY} Ethyl (S)-2-hydroxypropanoate {} {LY} Ethyl (S)-2-hydroxypropanoate {} {} {LY} Ethyl (S)-2-hydroxypropanoate {} {} {} {LY} Ethyl (S)-2-hydroxypropanoate {} {} {} {} {LY} Ethyl (S)-2-hydroxypropanoate {} {} {} {} {} {LY} Ethyl (S)-2-hydroxypropanoate {} {} {} {} {} {} {LY} Ethyl (S)-2-hydroxypropanoate {} {} {} {} {} {} {} {LY} Ethyl (S)-2-hydroxypropanoate {} {} {} {} {} {} {} {} {LY} Ethyl (S)-2-hydroxypropanoate {} {} {} {} {} {} {} {} {} {LY} Ethyl (S)-2-hydroxypropanoate {} {} {} {} {} {} {} {} {} {} {LY} Ethyl (S)-2-hydroxypropanoate {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Ethyl (S)-2-hydroxypropanoate {} {} {} {} {} {} {} {} {} {} {} {} { {} {} {} {} {} {} {} {} {} {} {} {} {LY} Ethyl (S)-2-hydroxypropanoate {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Ethyl (S)-2-hydroxypropanoate {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {}
CAS Number687-47-8
EC Number211-694-1
Beilstein Registry Number1720839
MDL NumberMFCD00004518
PubChem Substance ID92831
Reaxys-RN1720839
Chemical Name TranslationL-乳酸乙酯
Merck Number3817
InChIKeyLZCLXQDLBQLTDK-BYPYZUCNSA-N
LabNetwork Molecule IDLN00159505
InChIInChI=1S/C5H10O3/c1-3-8-5(7)4(2)6/h4,6H,3H2,1-2H3/t4-/m0/s1
Canonical SMILESC[C@H](O)C(OCC)=O
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分类

  • {SNA} Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography, E-H, Puriss p.a., Puriss p.a.
  • {SNA} Analytical Reagents for General Use, E-H, Puriss p.a., Puriss p.a., 分析/色谱, 分析试剂
  • Asymmetric Synthesis, Chemical Synthesis, Chiral Building Blocks, Esters, Organic Building Blocks
  • {Chemicalbook} 食品添加剂: 食品香料
  • {uni_hamburg} no charge; ester; alcohol; chiral; 1fragment
  • {SNA} Asymmetric Synthesis, Chemical Synthesis, Chiral Building Blocks, Esters, Organic Building Blocks
  • {SA} Alphabetical Listings, Certified Food Grade Products, E-F, E-H, Flavors and Fragrances, Halal Certified Products, Kosh

产品应用

  • 硝化纤维及乙酸纤维溶剂。有机合成。食品添加剂。

相关文献及参考

  • Short: IV/13A1
  • Merck: 14,3817
  • Short: III/38B
  • Beilstein:3(3)446

安全信息

GHS Symbol
WGK Germany1
Hazard Codes 3
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
  • 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。
  • P233 Keep container tightly closed. ?保持容器密闭。
  • P240 Ground/bond container and receiving equipment. 与地面接触/连接集装箱和接受设备。
  • P241 Use explosion-proof electrical/ventilating/lighting/…/equipment. 使用防爆电气/通风/照明/ .../设备。
  • P242 Use only non-sparking tools. 只能使用无火花工具。
  • P243 Take precautionary measures against static discharge. 采取预防措施，防止静电放电。
  • P261 Avoid breathing dust/fume/gas/mist/vapours/spray. 避免吸入粉尘/烟/气体/烟雾/蒸汽/喷雾。
  • P264+P265
  • 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。
  • 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。
  • P303+P361+P353
  • P304+P340
  • P305+P351+P338
  • P305+P354+P338
  • P310 Immediately call a POISON CENTER or doctor/physician. 立即呼救解毒中心或医生/医师。
  • 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。
  • P317
  • P319
  • P370+P378
  • P403+P233
  • P403+P235
  • P405 Store locked up. 上锁保管。
  • P501 Dispose of contents/container to..… 处理内容物/容器.....
Signal word Danger
UN Number 1192
Safety Statements
  • S24 Avoid contact with skin 避免皮肤接触；
  • 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；
  • S36/37/39 Wear suitable protective clothing, gloves and eye/face protection 穿戴适当的防护服、手套和眼睛/面保护；
  • S39 Wear eye/face protection 戴眼睛/面孔保护装置；
Risk Statements
  • R10 Flammable 易燃
  • R37 Irritating to respiratory system 刺激呼吸道
  • R41 Risk of serious damage to eyes 有严重损伤眼睛的危险
RTECSOD5070000
Packing GroupIII
Hazard Class3
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 {} {} {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {LY} Store at room temperature {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {} {}

其他信息

  • Hazard Note:Irritant/Flammable
  • 比旋光度:-10 ° (neat)
  • Acros Organics:L(-)-乳酸乙酯 Ethyl L(-)-lactate, 97%(687-47-8)
  • 用途三: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，乳香型食用和酒用香精。用量按正常生产需要，一般在酒类饮料中1000mg/kg；口香糖中580～3100mg/kg；烘烤食品中7lmg/kg；糖果中28mg/kg；冷饮中17
  • 方法一:金属卤化物催化法 用金属卤化物代替浓硫酸催化合成乳酸乙酯，收率65%～71%。 稀土化合物催化法 将乙醇0.22～0.33mol、乳酸0.1lmol、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%。 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回流脱水24h，常压蒸馏回收过量的乙醇，再减压蒸馏出成品。 CH3CH(OH)COOH+C2H5OH[H2SO4]→CH3CH(OH)COOC2H5+H2O 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NH4C1溶液搅拌加热浸渍，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=25/100(质量)，乳酸/乙醇(摩尔)=1/3。在100～160℃下回流分水反应8～10h，酯化率60%以上。 蒸馏酯化法 将225g80%的乳酸、475mI。(380g)95%的乙醇、100mL苯、2mL浓硫酸和少许沸石加入分水蒸馏装置的烧瓶(1000mL)中。加热反应液至沸，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℃，蒸馏出无色清亮的乳酸乙酯226g，收率96%。
  • 用途三: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，乳香型食用和酒用香精。用量按
  • {Chemi
  • 参考质量标准:GB 8317—1987 含量/% ≥98.0 折射率n D 20 1.410～1.420 酸值 ≤1.0 相对密度度d 25 25 1.029～1.032 砷(以As计)/% ≤0.0002 重金属(以Pb计)/% ≤0.001 色状 色泽不超过5号色标 香气 有柔和果香
  • Sigma Aldrich:687-47-8(sigmaaldrich)
  • 用途一:用作硝化纤维和乙酸纤维的溶剂，也用于香料工业
  • 易溶于醇、醚、酮类、酯类、油类，与水混溶并部分分解。
  • MSDS 信息:乳酸乙酯(687-47-8).msds
  • L(-)-乳酸乙酯价格(试剂级):更新日期 产品编号 产品名称 包装 价格 2014/06/02 L0162 L-(-)-乳酸乙酯 Ethyl L-(-)-Lactate 25G 104元
  • 图谱信息:L(-)-乳酸乙酯(687-47-8)核磁图( 13 CNMR) L(-)-乳酸乙酯(687-47-8)红外图谱(IR1) L(-)-乳酸乙酯(687-47-8)核磁图( 1 HNMR) L(-)-乳酸乙酯(687-47-8)质谱(MS)
  • 用途四:该品是硝化纤维及乙酸纤维溶剂，也是人造珍珠类的高级溶剂。乳酸乙酯具有酒香香型的香气。用于配制酒用香精及食用香精。
  • 图谱信息:L(-)-乳酸乙酯(6
  • 上游原料:乙醇 --> 浓硫酸 --> 乳酸 --> 氧化钬 --> 乳酸
  • {Che
  • 蒸气密度:4.1 (vs air)
  • FEMA:2440
  • 海关编码:29181100
  • 有特殊气味。能与水混溶并部分分解，易溶于乙醇、乙醚、酮类、酯类、碳氢化合物和油类。

系列性分类

  1. Application Areas 应用领域分类
  2. Flavors and Fragrances 香精香料
  3. Kosher Certified Products - Flavors and Fragrances
  4. E-H - Kosher Certified Products
  1. Analytical & Chromatography 分析化学与色谱
  2. Analytical Reagents
  3. Analytical Reagents for General Use - Analytical Reagents
  4. Puriss p.a. - Analytical Reagents for General Use
  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. Analytical & Chromatography 分析化学与色谱
  2. Analytical Reagents
  3. Analytical Reagents for General Use - Analytical Reagents
  4. Puriss p.a. - Analytical Reagents for General Use
  5. E-H, Puriss p.a. - Puriss p.a.
  1. Chemical Synthesis 化学合成
  2. Asymmetric Synthesis 不对称合成
  3. Chiral Building Blocks 手性分子砌块
  4. Organic Building Blocks - Chiral Building Blocks
  5. Esters - Organic Building Blocks
  1. Chemical Synthesis 化学合成
  2. Asymmetric Synthesis 不对称合成
  3. Chiral Building Blocks 手性分子砌块
  4. Organic Building Blocks - Chiral Building Blocks
  5. Esters - Organic Building Blocks
  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
  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
  1. Chemical Synthesis 化学合成
  2. Asymmetric Synthesis 不对称合成
  3. Chiral Building Blocks 手性分子砌块
  1. Chemical Synthesis 化学合成
  2. Building Blocks 合成砌块
  3. Organic Building Blocks 有机砌块
  4. Epoxides 环氧化物
  1. Analytical & Chromatography 分析化学与色谱
  2. Adsorbents, Filter Aids and Drying Agents
  3. Other Drying Agents