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重要文件

S9390

Sigma-Aldrich

磷酸钠 二元 七水合物

ACS reagent, 98.0-102.0%

同義詞:

磷酸氢二钠, 磷酸氢二钠 七水合物

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About This Item

線性公式:
Na2HPO4 · 7H2O
CAS號碼:
分子量::
268.07
EC號碼:
MDL號碼:
分類程式碼代碼:
12352302
PubChem物質ID:
NACRES:
NA.21

等級

ACS reagent

品質等級

蒸汽密度

4.9 (vs air)

化驗

98.0-102.0%

形狀

powder

雜質

≤0.005% Insoluble matter

pH值

8.7-9.3 (25 °C, 5% in solution)

密度

1.68 g/mL at 25 °C (lit.)

負離子痕跡

chloride (Cl-): ≤0.001%
sulfate (SO42-): ≤0.005%

正離子痕跡

Fe: ≤0.001%
heavy metals: ≤0.001% (by ICP)

SMILES 字串

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

InChI

1S/2Na.H3O4P.7H2O/c;;1-5(2,3)4;;;;;;;/h;;(H3,1,2,3,4);7*1H2/q2*+1;;;;;;;;/p-2

InChI 密鑰

PYLIXCKOHOHGKQ-UHFFFAOYSA-L

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一般說明

七水合磷酸二钠是磷酸二钠(DSP)或正磷酸氢二钠的水合形式。DSP 被广泛用作 pH 调节剂和生理盐水泻药。

應用

七水二磷酸钠、磷酸一碱钾和 NaCl 在去离子水中的混合物用于制备磷酸盐缓冲盐水(PBS,pH值7.4)。PBS 在生物学研究中用作缓冲溶液,以保持 pH 恒定。

儲存類別代碼

13 - Non 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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