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Merck

512990

Sigma-Aldrich

2,4,6,8-四甲基环四硅氧烷

≥98.5%, ≥99.999% trace metals basis

别名:

1,3,5,7-四甲基环四硅氧烷, 1,3,5,7-环四(甲基硅氧烷), TMCTS

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About This Item

线性分子式:
(HSiCH3O)4
CAS号:
分子量:
240.51
Beilstein:
1775282
EC 号:
MDL编号:
UNSPSC代码:
12352103
PubChem化学物质编号:
NACRES:
NA.23
价格与库存信息目前不能提供

质量水平

方案

≥98.5%
≥99.999% trace metals basis

表单

liquid

折射率

n20/D 1.387 (lit.)

沸点

134 °C (lit.)

mp

−69 °C (lit.)

密度

0.986 g/mL at 25 °C (lit.)

储存温度

2-8°C

SMILES字符串

C[SiH]1O[SiH](C)O[SiH](C)O[SiH](C)O1

InChI

1S/C4H16O4Si4/c1-9-5-10(2)7-12(4)8-11(3)6-9/h9-12H,1-4H3

InChI key

BQYPERTZJDZBIR-UHFFFAOYSA-N

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一般描述

基材原子序编号:14 硅

特点和优势

薄膜晶体管 (TFT) 栅极电介质的前体,TiO 上光化学形成的 SiOX 单层的组分。

象形图

Flame

警示用语:

Warning

危险声明

危险分类

Flam. Liq. 3

储存分类代码

3 - Flammable liquids

WGK

WGK 3

闪点(°F)

75.2 °F - closed cup

闪点(°C)

24 °C - closed cup

个人防护装备

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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Dae-Yoon Kim et al.
Soft matter, 11(1), 58-68 (2014-11-20)
Unconventional star-shaped liquid crystals (abbreviated as SiLCs) were successfully synthesized by chemically connecting four cyanobiphenyl anisotropic mesogens to the periphery of a super-hydrophobic and ultra-flexible cyclic tetramethyltetrasiloxane ring with flexible hexyl chains. Based on the combined experimental techniques of differential

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Questions

1–2 of 2 Questions  
  1. 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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  2. 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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