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07-6061

Sigma-Aldrich

水

同義詞:

Water

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About This Item

線性公式:
H2O
CAS號碼:
7732-18-5
分子量：:
18.02
Beilstein:
2050024
EC號碼:
231-791-2
MDL號碼:
MFCD00011332
分類程式碼代碼:
50202301
PubChem物質ID:
329748491
bp:
100 °C (lit.)
暫時無法取得訂價和供貨情況

形狀

liquid

存貨情形

available only in Japan

dilution

(for analytical testing)

折射率

n20/D 1.34 (lit.)

pH值

6.0-8.0 (25 °C)

bp

100 °C (lit.)

mp

0 °C (lit.)

密度

1.000 g/mL at 3.98 °C (lit.)

SMILES 字串

O

InChI

1S/H2O/h1H2

InChI 密鑰

XLYOFNOQVPJJNP-UHFFFAOYSA-N

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儲存類別代碼

10 - Combustible liquids

水污染物質分類（WGK）

nwg

閃點（°F）

Not applicable

閃點（°C）

Not applicable

個人防護裝備

Eyeshields, Gloves

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分析證明 (COA)

Lot/Batch Number
K1537
K1488
K0450
K8448
K6453

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Jesse K Kreye et al.
Ecological applications : a publication of the Ecological Society of America, 23(8), 1976-1986 (2014-02-22)
Long-term fire exclusion has altered ecological function in many forested ecosystems in North America. The invasion of fire-sensitive tree species into formerly pyrogenic upland forests in the southeastern United States has resulted in dramatic shifts in surface fuels that have
Klaus Gerwert et al.
Biochimica et biophysica acta, 1837(5), 606-613 (2013-09-24)
Protein-bound internal water molecules are essential features of the structure and function of microbial rhodopsins. Besides structural stabilization, they act as proton conductors and even proton storage sites. Currently, the most understood model system exhibiting such features is bacteriorhodopsin (bR).
Yuji Furutani et al.
Biochimica et biophysica acta, 1837(5), 598-605 (2013-09-18)
Microbial rhodopsins are classified into type-I rhodopsins, which utilize light energy to perform wide varieties of function, such as proton pumping, ion pumping, light sensing, cation channels, and so on. The crystal structures of several type-I rhodopsins were solved and
Martin Berggren et al.
Ecology, 95(7), 1947-1959 (2014-08-29)
The importance of terrestrial-derived organic matter for lake zooplankton communities remains debated, partly because little is known about the basic pathways by which allochthonous carbon is transferred to zooplankton, and whether these vary among the major taxonomic and functional groups.
Fang Yuan et al.
Nature, 514(7522), 367-371 (2014-08-28)
Water is crucial to plant growth and development. Environmental water deficiency triggers an osmotic stress signalling cascade, which induces short-term cellular responses to reduce water loss and long-term responses to remodel the transcriptional network and physiological and developmental processes. Several
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Questions

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  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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