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Merck

296996

Sigma-Aldrich

乙酸甲酯

anhydrous, 99.5%

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2 L
$298.00

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2 L
$298.00

About This Item

线性分子式:
CH3COOCH3
CAS号:
分子量:
74.08
Beilstein:
1736662
EC 号:
MDL编号:
UNSPSC代码:
12352108
PubChem化学物质编号:
NACRES:
NA.21

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等级

anhydrous

质量水平

蒸汽密度

2.55 (vs air)

蒸汽压

165 mmHg ( 20 °C)

方案

99.5%

表单

liquid

自燃温度

936 °F

expl. lim.

16 %

杂质

<0.003% water
<0.005% water (100 mL pkg)

蒸发残留物

<0.0003%

折射率

n20/D 1.361 (lit.)

沸点

57-58 °C (lit.)

mp

−98 °C (lit.)

密度

0.934 g/mL at 25 °C

SMILES字符串

COC(C)=O

InChI

1S/C3H6O2/c1-3(4)5-2/h1-2H3

InChI key

KXKVLQRXCPHEJC-UHFFFAOYSA-N

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一般描述

乙酸甲酯(MA)是脂族酯,可通过二甲醚在沸石上发生羰基化来制备。[1]在由乙酸和甲醇制备聚乙烯醇的过程中会生成副产物MA。[2]

应用

乙酸甲酯可用于在超临界条件下由菜子油发生非催化酯交换反应制备脂肪酸甲酯和三醋精。[3]

其他说明

货号296996-6X1L的产品即将停产。请订购296996-1L单瓶装,因为其物理参数与上述产品本质相同。

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象形图

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警示用语:

Danger

危险声明

危险分类

Eye Irrit. 2 - Flam. Liq. 2 - STOT SE 3

靶器官

Central nervous system

补充剂危害

储存分类代码

3 - Flammable liquids

WGK

WGK 1

闪点(°F)

8.6 °F - closed cup

闪点(°C)

-13 °C - closed cup

个人防护装备

Eyeshields, Faceshields, Gloves


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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Reaction kinetics and chemical equilibrium of homogeneously and heterogeneously catalyzed acetic acid esterification with methanol and methyl acetate hydrolysis
Popken T, et al.
Industrial & Engineering Chemistry Research, 39(7), 2601-2611 (2000)
Kinetics of transesterification of methyl acetate and n-octanol catalyzed by cation exchange resins.
Liu Y, et al.
Korean Journal of Chemical Engineering, 30(5), 1039-1042 (2013)
Dimethyl ether carbonylation to methyl acetate over HZSM-35.
Liu J, et al.
Catalysis Letters, 139(1-2), 33-37 (2010)
Study on the kinetics of enzymatic interesterification of triglycerides for biodiesel production with methyl acetate as the acyl acceptor.
Xu Y, et al.
Journal of Molecular Catalysis. B, Enzymatic, 32(5), 241-245 (2005)
Synthesis of ethanol from methanol and syngas through an indirect route containing methanol dehydrogenation, DME carbonylation, and methyl acetate hydrogenolysis.
Liu Y, et al.
Fuel Processing Technology, 110, 206-213 (2013)

Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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