月桂酸甲酯 Methyl Laurate

产品名称 Product Name

月桂酸甲酯 / Methyl Laurate

别名 Synonyms

月桂酸甲酯、十二酸甲酯、十二烷酸甲酯、月桂酸甲脂 / Methyl Laurate, Methyl dodecanoate, Lauric acid methyl ester, Methyl n-dodecanoate, Methyl laurinate

级别/型号 Grade

化妆品级/食品级（香料 FEMA 2715）/ 亦可工业级（表面活性剂等中间体）/ Cosmetic / Food grade (flavor FEMA 2715) / also industrial (surfactant intermediate)

商标 Trademark

N/A（脂肪酸甲酯，按级别与纯度分级）/ N/A (fatty acid methyl ester, graded by grade & purity)

形态 Form

透明无色至浅黄色液体 / Clear colorless to slightly yellow liquid

CAS 登记号 CAS No.

111-82-0

EC / EINECS 号

203-911-3（EINECS）/ 203-911-3 (EINECS)

香料/添加剂号 Flavor No.

FEMA 2715（食用香料）；JECFA 180 / FEMA 2715 (flavor); JECFA 180

海关编码 HS Code

2915.90（细分 29159000「其他饱和无环一元羧酸及其衍生物」；CN/UK 列 2915.90.3010 月桂酸及其盐与酯项下甲基月桂酸酯）/ 2915.90 (subheading 29159000 'other saturated acyclic monocarboxylic acids & derivatives'; CN/UK 2915.90.3010 'lauric acid & its salts/esters: methyl laurate')

PubChem CID

8139（PubChem）/ 8139 (PubChem)

InChIKey

UQDUPQYQJKYHQI-UHFFFAOYSA-N

主要用途 Primary Use

香料香精（FEMA 2715，葡萄酒/花香，食品饮料日化）；化妆品（皮肤调理、润肤、加香）；表面活性剂与食品乳化剂（蔗糖月桂酸酯等）合成中间体；生物柴油组分；气相色谱脂肪酸甲酯标准 / Flavor & fragrance (FEMA 2715, wine/floral, food & cosmetic); cosmetics (skin conditioning, emollient, perfuming); intermediate for surfactants & food emulsifiers (sucrose laurate); biodiesel component; GC FAME standard

主要成分 Main Component

月桂酸甲酯（Methyl Laurate）是月桂酸（十二烷酸，C12）的甲酯，化学名十二烷酸甲酯，分子式 C13H26O2；由月桂酸与甲醇在酸催化下酯化制得，常温下为透明无色至浅黄色液体，熔点约 4–5 °C、沸点约 262 °C，不溶于水、易溶于有机溶剂，具良好脂溶性与温和蜡质香气。主要用作食用/日化香精（FEMA 2715）、化妆品润肤加香原料、表面活性剂与食品乳化剂（如蔗糖月桂酸酯）合成中间体，亦作生物柴油组分与气相色谱脂肪酸甲酯标准。 Methyl laurate is the methyl ester of lauric acid (dodecanoic acid, C12), IUPAC methyl dodecanoate, C13H26O2; produced by acid-catalyzed esterification of lauric acid with methanol; clear colorless-to-pale-yellow liquid at RT, mp ~4–5 °C, bp ~262 °C, water-insoluble but organic-soluble with good lipophilicity and mild waxy odor. Used as food/cosmetic flavor (FEMA 2715), cosmetic emollient/perfuming, intermediate for surfactants & food emulsifiers (e.g., sucrose laurate), biodiesel component, and GC FAME standard.

杂质/副成分 Impurities

杂质受控：游离酸（月桂酸）、水分、不皂化物、重金属、灼烧残渣、有关酯类（其他脂肪酸甲酯）等；食品/化妆品级另控微生物与有关物质限度。 Controlled impurities: free acid (lauric acid), moisture, unsaponifiables, heavy metals, residue on ignition, related esters (other fatty acid methyl esters); food/cosmetic grades also control microbes & related-substance limits.

分子式/分子量 Formula / MW

C13H26O2 / 214.34 g/mol

外观 Appearance

透明无色至浅黄色液体；具蜡质/肥皂/椰子-葡萄酒样温和气味 / Clear colorless to slightly yellow liquid; waxy/soapy, coconut-wine mild odor

颜色 Color

无色至浅黄色 / Colorless to slightly yellow

气味 Odor

蜡质、肥皂样，带椰子与葡萄酒气息（温和）/ Waxy, soapy, coconut-wine note (mild)

离子型 Ionic Type

非离子；脂肪酸甲酯（长链烷基 + 酯基）/ Non-ionic; fatty acid methyl ester (long alkyl chain + ester)

熔点 Melting Point

4 – 5 °C（lit.；个别来源 5.2 °C）/ 4–5 °C (lit.; some sources 5.2 °C)

沸点 Boiling Point

262 °C（766 mmHg，lit.；个别来源 261–267 °C）/ 262 °C (766 mmHg, lit.; some sources 261–267 °C)

溶解性 Solubility

几乎不溶于水（25°C 约 0.0076 g/L）；易溶于乙醇、乙醚、氯仿、二丙二醇等有机溶剂，具良好脂溶性 / Practically insoluble in water (~0.0076 g/L at 25°C); freely in ethanol, ether, chloroform, dipropylene glycol; good lipophilicity

密度 Density

0.87 g/mL（25°C，lit.）；相对密度 d25/25 0.863–0.872 / 0.87 g/mL (25°C, lit.); sp. gr. d25/25 0.863–0.872

折射率 Refractive Index

n20/D 1.431（lit.）；范围 1.430–1.438 / n20/D 1.431 (lit.); range 1.430–1.438

闪点 Flash Point

约 139 °C（闭杯，282°F；lit.）/ ~139 °C (closed cup, 282°F; lit.)

粘度 Viscosity

不适用（液体，常规不列；低黏度油性液体）/ N/A (liquid; low-viscosity oily liquid)

项目 Item

典型值 Typical

测试方法/来源 Method / Source

含量 Assay (C13H26O2)

≥98.0%（工业）；≥99.0%（化妆品/食品级；FAO/WHO 食品香料 ≥94.0%）/ ≥98.0% (industrial); ≥99.0% (cosmetic/food; FAO/WHO flavor ≥94.0%)

气相色谱法 GC

外观 Appearance

透明无色至浅黄色液体 / Clear colorless to slightly yellow liquid

目视 / Visual

鉴别 Identification

符合（IR / GC）/ Conforms (IR / GC)

ChP/EP 通则 / General methods

熔点 Melting point

4–5 °C

毛细管法 / Capillary

相对密度 Specific gravity (d25/25)

0.863–0.872

比重瓶法 / Pycnometer

折射率 Refractive index (n20/D)

1.430–1.438

阿贝折射仪 / Abbe refractometer

酸值 Acid value

≤1.0 mg KOH/g

滴定法 / Titration

水分 Water

≤0.2%

卡尔费休法 / Karl Fischer

重金属（以 Pb 计）Heavy metals (as Pb)

≤10 ppm

AAS / 比色

灼烧残渣 Residue on ignition

≤0.1%

重量法 / Gravimetric

GHS 分类 GHS Classification

GHS 分类：危害水生环境——急性 1 类、慢性 2 类（H410，对水生生物毒性极大并具有长期持续影响）；信号词 Warning；象形图 GHS09（环境）。 GHS: Hazardous to aquatic environment — Acute 1, Chronic 2 (H410, very toxic to aquatic life with long lasting effects); Signal word Warning; pictogram GHS09 (environment).

危害声明 H-statements

H410（对水生生物毒性极大，并具有长期持续影响）/ H410 (very toxic to aquatic life with long lasting effects)

防范说明 P-statements

P273（避免释放到环境中）、P391（收集溢出物）、P501（按当地法规处置）/ P273, P391, P501

NFPA 704

非标准 NFPA 评级；可燃液体（储存类别 10 / Combustible liquid，闪点 ~139 °C），低急性毒性、低刺激。 Not a standard NFPA rating; combustible liquid (storage class 10, flash ~139 °C), low acute toxicity & irritation.

急性毒性 Acute Toxicity

急性毒性低（兔口服 LD50 > 2000 mg/kg；GRAS 物质，FEMA 2715）；属低毒、低刺激性。 Low acute toxicity (rabbit oral LD50 > 2000 mg/kg; GRAS, FEMA 2715); low toxicity & irritation.

危险反应 Hazardous Reaction

与强氧化剂不相容；可燃液体，遇高热分解产生刺激性烟雾；对水生环境有长期危害。 Incompatible with strong oxidants; combustible liquid, decomposes at high T emitting irritant fumes; long-term hazard to aquatic environment.

灭火 Fire-fighting

适用灭火介质：泡沫、二氧化碳、干粉、水雾；消防人员佩戴防护装备，注意防止流入水体（水生毒性）。 Suitable media: foam, CO₂, dry powder, water spray; firefighters wear PPE, prevent runoff into water (aquatic toxicity).