reagent grade
1.03 (vs air)
<1.45 mmHg ( 25 °C)
crystalline
572 °F
73 %
120-170 °C (lit.)
0.88 g/mL at 25 °C (lit.)
2-8°C
1S/CH2O/c1-2/h1H2
WSFSSNUMVMOOMR-UHFFFAOYSA-N
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Danger
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
Respiratory system
4.1B - Flammable solid hazardous materials
WGK 2
Not applicable
Not applicable
Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
输入产品批号来搜索 分析证书(COA) 。批号可以在产品标签上"批“ (Lot或Batch)字后找到。
为方便起见,与您过往购买产品相关的文件已保存在文档库中。
如何查找产品货号
在网站页面上,产品编号会附带包装尺寸/数量一起显示(例如:T1503-25G)。请确保 在“产品编号”字段中仅输入产品编号 (示例: T1503).
示例
其它示例:
705578-5MG-PW
PL860-CGA/SHF-1EA
MMYOMAG-74K-13
1000309185
输入内容 1.000309185)
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如何查找COA批号
批号可以在产品标签上"批“ (Lot或Batch)字后面找到。
如果您查询到的批号为 TO09019TO 等,请输入去除前两位字母的批号:09019TO。
如果您查询到的批号含有填充代码(例如05427ES-021),请输入去除填充代码-021的批号:05427ES。
如果您查询到的批号含有填充代码(例如 STBB0728K9),请输入去除填充代码K9的批号:STBB0728。
部分情况下,可能未在线提供COA。如果搜索不到COA,可在线索取。
Paraformaldehyde is the polymeric form of formaldehyde. Paraformaldehyde is a solid, and formaldehyde is a gas. Formaldehyde solutions consist of formaldehyde gas dissolved in a solvent of some kind.
The shelf life has not been assigned but guarantee of quality is 1 year from the time of receipt for unopened bottles stored at 2-8 °C. We expect the product to be of good quality for at least 2 years.
Prilled has the appearance of small white beads. Product P6148 is a powder, not prilled.
Buffered solutions of 2-4% can be stored protected from light for 2-3 weeks at 2-8°C.
Paraformaldehyde does not dissolve but rather can be depolymerized in solution. Depolymerized solutions can be prepared in water with heating to 55-60°C. If necessary, further addition of 1-2 drops of a sodium hydroxide solution may be required. Some protocols suggest that paraformaldehyde should be prepared in buffered solutions such as phosphate buffer or PBS at approximately pH 7.
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
Paraformaldehyde is the polymeric form of formaldehyde. It is a solid. Formaldehyde is a gas which when dissolved in water gives a formaldehyde solution. Commercially available formaldehyde solutions usually contain 10-15% methanol, which prevents the formaldehyde from forming the polymeric paraformaldehyde.
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.
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.
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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可用的荧光原位杂交(FISH)过程、试剂和设备。
Available Fluorescent in situ hybridization (FISH) procedures, reagents and equipment.
细胞染色可分为四个步骤:细胞制备、固定、抗体孵育和评估。
Cell staining can be divided into four steps: cell preparation, fixation, application of antibody, and evaluation.
Three-dimensional (3D) printing of biological tissue is rapidly becoming an integral part of tissue engineering.
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