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Sigma-Aldrich

多聚甲醛

prilled, 95%

同義詞:

聚氧亚甲基

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About This Item

線性公式:
HO(CH2O)nH
CAS號碼:
分子量::
30.03 (as monomer)
MDL號碼:
分類程式碼代碼:
12352100
PubChem物質ID:
NACRES:
NA.22
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蒸汽密度

1.03 (vs air)

品質等級

蒸汽壓力

<1.45 mmHg ( 25 °C)

化驗

95%

形狀

prilled

自燃溫度

572 °F

expl. lim.

73 %

mp

120-170 °C (lit.)

轉變溫度

sublimation point 150 °C

溶解度

alcohol and cold water: slightly soluble
ethers, hydrocarbons and carbon tetrachloride: insoluble

密度

0.88 g/mL at 25 °C (lit.)

SMILES 字串

[O-]#[C+H2]

InChI

1S/CH2O/c1-2/h1H2

InChI 密鑰

WSFSSNUMVMOOMR-UHFFFAOYSA-N

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一般說明

多聚甲醛是甲醛的聚合产物,用于合成热固性聚合物的聚酯反应。[1]

多聚甲醛也称聚甲醛。它在钌催化剂存在下可参与二烯、炔烃和丙二烯的区域选择性还原偶联反应。[2]它还通过烯烃的烷氧基羰基化反应参与酯的合成。[3]

應用

多聚甲醛可用于制备偶氮甲碱叶立德[4]、α-亚甲基色烷、α-亚甲基喹啉和醌甲基化物。[5]
甲醛可制备苯酚-、脲-、糠醇-、间苯二酚-和三聚氰胺-甲醛聚合物,用于涂料、木制品、纺织品和铸造用树脂。

特點和優勢

提供无甲醇的甲醛。
在热水中降解成甲醛。

訊號詞

Danger

危險分類

Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Carc. 1B - Eye Dam. 1 - Flam. Sol. 2 - Muta. 2 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3

標靶器官

Respiratory system

儲存類別代碼

4.1B - Flammable solid hazardous materials

水污染物質分類(WGK)

WGK 2

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges


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分析證明 (COA)

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Brannon Sam et al.
Angewandte Chemie (International ed. in English), 54(11), 3267-3274 (2014-11-29)
Ruthenium-catalyzed reductive couplings of paraformaldehyde with dienes, alkynes, and allenes provide access to products of hydrohydroxymethylation that cannot be formed selectively under the conditions of hydroformylation. In certain cases, the regioselectivity of the CC coupling can be inverted by using
Ruthenium-Catalyzed Alkoxycarbonylation of Alkenes with Paraformaldehyde as a Carbon Monoxide Substitute.
Liu Q, et al.
ChemCatChem, 6(10), 2805-2809 (2014)
Synthesis of ethanol from paraformaldehyde, CO 2 and H 2
Green Chemistry, 19, 4396-4401 (2017)
J Justin Mulvey et al.
International journal of nanomedicine, 9, 4245-4255 (2014-09-18)
We aimed to create a more robust and more accessible standard for amine-modifying single-walled carbon nanotubes (SWCNTs). A 1,3-cycloaddition was developed using an azomethine ylide, generated by reacting paraformaldehyde and a side-chain-Boc (tert-Butyloxycarbonyl)-protected, lysine-derived alpha-amino acid, H-Lys(Boc)-OH, with purified SWCNT
José C J M D S Menezes et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 20(42), 13644-13655 (2014-08-30)
In view of increasing demands for efficient photosensitizers for photodynamic therapy (PDT), we herein report the synthesis and photophysical characterizations of new chlorin e6 trimethyl ester and protoporphyrin IX dimethyl ester dyads as free bases and Zn(II) complexes. The synthesis of these

Questions

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  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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