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硫酸二甲酯

≥99%

同義詞:

二甲基硫酸酯

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About This Item

線性公式:
(CH3O)2SO2
CAS號碼:
77-78-1
分子量：:
126.13
Beilstein:
635994
EC號碼:
201-058-1
MDL號碼:
MFCD00008416
分類程式碼代碼:
12352108
PubChem物質ID:
24859257
NACRES:
NA.22
bp:
188 °C (lit.)
暫時無法取得訂價和供貨情況

蒸汽密度

4.3 (vs air)

品質等級

200

蒸汽壓力

0.7 mmHg ( 25 °C)

化驗

≥99%

形狀

liquid

自燃溫度

923 °F

折射率

n20/D 1.386 (lit.)

bp

188 °C (lit.)

mp

−32 °C (lit.)

密度

1.333 g/mL at 25 °C (lit.)

SMILES 字串

COS(=O)(=O)OC

InChI

1S/C2H6O4S/c1-5-7(3,4)6-2/h1-2H3

InChI 密鑰

VAYGXNSJCAHWJZ-UHFFFAOYSA-N

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應用

硫酸二甲酯是强甲基化试剂，可用于羧酸、醇、酚、内酰胺、肟、羟胺和氢过氧化物的甲基化。[1][2]可作为试剂，制备 N-甲基烷基胺、芳基取代胺、酰胺和季铵盐。硫酸二甲酯也用于含硫化合物的甲基化反应，合成硫化物和硫鎓离子。[1]
还能作为试剂，用于：       
  • 由甲基丙烯酸-2-二甲氨基乙酯季铵化制备丙烯酸季铵盐单体，该单体可作为强效的抗菌剂[3]       
  • 与二甲基亚砜一起，通过形成三甲基硫鎓阳离子，从醛和酮合成环氧化物。[4]      
  • 通过甘油甲基化制备柴油的含氧添加剂[5]

相關產品

產品號碼
描述
訂價

訊號詞

Danger

危險分類

Acute Tox. 2 Inhalation - Acute Tox. 3 Oral - Carc. 1B - Eye Dam. 1 - Muta. 2 - Skin Corr. 1B - Skin Sens. 1

儲存類別代碼

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

水污染物質分類（WGK）

WGK 3

閃點（°F）

181.4 °F - closed cup

閃點（°C）

83 °C - closed cup

個人防護裝備

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

從最近期的版本中選擇一個：

分析證明 (COA)

Lot/Batch Number
BCCN0114
BCCM1477
BCCK9001
SHBP9161
SHBP3232

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Synthesis of antibacterial polymers from 2-dimethylamino ethyl methacrylate quaternized by dimethyl sulfate
Zuo Huajiang, et al.
Polymer Journal, 42(9), 766-771 (2010)
Fieser and Fieser: Reagents For Organic Synthesis
Fieser, Mary and March, Jerry
Fieser and Fieser's Reagents for Organic Synthesis, 16 (1993)
Methylation of glycerol with dimethyl sulfate to produce a new oxygenate additive for diesels
Chang J-S, et al.
Industrial & Engineering Chemistry Research, 51(2), 655-661 (2012)
Dimethyl Sulfate.
Merriman G.
Encyclopedia of Reagents for Organic Synthesis, Second Edition (2001)
Generation of trimethylsulfonium cation from dimethyl sulfoxide and dimethyl sulfate: implications for the synthesis of epoxides from aldehydes and ketones
Forrester J, et al.
Journal of the Chemical Society. Perkin Transactions 1, (18), 2289-2291 (1995)
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  1. How is shipping temperature determined? And how is it related to the product storage temperature?

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    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?

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    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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