About This Item
蒸汽密度
1.03 (vs air)
质量水平
蒸汽压
<1.45 mmHg ( 25 °C)
检测方案
95%
形式
prilled
自燃温度
572 °F
expl. lim.
73 %
mp
120-170 °C (lit.)
转变温度
sublimation point 150 °C
溶解性
alcohol and cold water: slightly soluble
ethers, hydrocarbons and carbon tetrachloride: insoluble
密度
0.88 g/mL at 25 °C (lit.)
InChI
1S/CH2O/c1-2/h1H2
InChI key
WSFSSNUMVMOOMR-UHFFFAOYSA-N
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一般描述
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。它还通过烯烃的烷氧基羰基化反应参与酯的合成。
应用
特点和优势
在热水中降解成甲醛。
警示用语：
Danger
危险分类
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
靶器官
Respiratory system
WGK
WGK 2
闪点(°F)
Not applicable
闪点(°C)
Not applicable
个人防护装备
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
法规信息
Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
How do I find price and availability?
There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 or view local office numbers.
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
What are the differences between the Paraformaldheyde products and which is best suited for use as a fixative for Electron Microscopy?
Product 16005 is sold only in Europe and is not available to US customers.The primary differences among the various products is in the form for each product. P6148 is listed as crystalline, 158127 is listed as powder, and 441244 is listed as prilled. The product information page for 441244 states the prilled form will go into solution more readily, but the prilled, crystalline, and powder forms are equivalent in terms on use. The prilled form is expected to slow down the rate of sublimation compared to the powder or the crystalline forms. Any of the 3 products should be suitable for use as a fixative. However, once prepared, paraformaldehyde solutions are unstable unless methanol is added as a stabilizer. Customer options vary from preparing solutions daily to storing solutions for 2 or 3 weeks. If used as a fixative for electron microscopy, we recommend preparing solutions fresh daily to avoid the risk of repeating tedious EM work due to deterioration of the fixative. For less critical applications, it would be more acceptable to use solutions stored for longer periods of time.
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