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71800

Sigma-Aldrich

乙二酸钠

puriss. p.a., ACS reagent, ≥99.5% (RT)

同義詞:

乙二酸 钠盐, 草酸 二钠盐

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About This Item

線性公式:
NaOOCCOONa
CAS號碼:
分子量::
134.00
Beilstein:
3631622
EC號碼:
MDL號碼:
分類程式碼代碼:
12352300
eCl@ss:
39021701
PubChem物質ID:
NACRES:
NB.24
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等級

ACS reagent
puriss. p.a.

化驗

≥99.5% (RT)

形狀

powder or crystals

雜質

≤0.002% ammonium (NH4)

損耗

≤0.01% loss on drying, 105 °C

pH值

7-8.5 (25 °C, 2.5% in H2O)

負離子痕跡

chloride (Cl-): ≤20 mg/kg
sulfate (SO42-): ≤20 mg/kg

正離子痕跡

Ca: ≤100 mg/kg
Cd: ≤10 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤10 mg/kg
K: ≤50 mg/kg
Mg: ≤10 mg/kg
Mn: ≤50 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

SMILES 字串

[Na+].[Na+].[O-]C(=O)C([O-])=O

InChI

1S/C2H2O4.2Na/c3-1(4)2(5)6;;/h(H,3,4)(H,5,6);;/q;2*+1/p-2

InChI 密鑰

ZNCPFRVNHGOPAG-UHFFFAOYSA-L

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相關類別

一般說明

草酸钠是草酸的钠盐,由钠离子和草酸离子组成。在化学合成中用作还原剂。此外,它还可以作为表面改性剂和脱硫剂。

應用

草酸钠可作为稳定剂用于通过紫外分光光度法测定维生素 C 产品中的 L-抗坏血酸。它还用于通过以铜板为阳极的电解合成草酸铜纳米颗粒。

象形圖

Exclamation mark

訊號詞

Warning

危險聲明

危險分類

Acute Tox. 4 Dermal - Acute Tox. 4 Oral

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


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分析證明 (COA)

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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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