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重要文件

U0631

Sigma-Aldrich

尿素

BioXtra, pH 7.5-9.5 (20 °C, 5 M in H2O)

同義詞:

碳酰二胺, 碳酰胺

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About This Item

線性公式:
NH2CONH2
CAS號碼:
分子量::
60.06
Beilstein:
635724
EC號碼:
MDL號碼:
分類程式碼代碼:
12352111
PubChem物質ID:
NACRES:
NA.31
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產品線

BioXtra

化驗

98.5-101.5%

形狀

powder, crystals or pellets

雜質

≤0.005% Phosphorus (P)
≤0.1% Insoluble matter

燃燒殘留物

≤0.1%

pH值

7.5-9.5 (20 °C, 5 M in H2O)

mp

132-135 °C (lit.)

溶解度

H2O: 5 M at 20 °C, clear, colorless

密度

1.335 g/mL at 25 °C (lit.)

負離子痕跡

chloride (Cl-): ≤0.05%
sulfate (SO42-): ≤0.05%

正離子痕跡

Al: ≤0.0005%
Ca: ≤0.001%
Cu: ≤0.0005%
Fe: ≤0.0005%
K: ≤0.005%
Mg: ≤0.0005%
NH4+: ≤0.05%
Na: ≤0.005%
Pb: ≤0.001%
Zn: ≤0.0005%

吸收

≤0.06 at 260 nm at 5 M
≤0.06 at 280 nm at 5 M

應用

diagnostic assay manufacturing

SMILES 字串

NC(N)=O

InChI

1S/CH4N2O/c2-1(3)4/h(H4,2,3,4)

InChI 密鑰

XSQUKJJJFZCRTK-UHFFFAOYSA-N

基因資訊

尋找類似的產品? 前往 產品比較指南

應用

用于蛋白质变性以及作为不溶性或变性蛋白的温和增溶剂。可用于从已由 6M 盐酸胍变性的样品(如包涵体)复性蛋白质。可与盐酸胍和二硫苏糖醇 (DTT) 一起用于复性变性蛋白以恢复其天然或活性形式。

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 1

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

Eyeshields, Gloves, type N95 (US)


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分析證明 (COA)

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Questions

1–2 of 2 Questions  
  1. 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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  2. 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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