S9390
磷酸钠 二元 七水合物
ACS reagent, 98.0-102.0%
别名:
磷酸氢二钠, 磷酸氢二钠 七水合物
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关于此项目
线性分子式:
Na2HPO4 · 7H2O
化学文摘社编号:
分子量:
268.07
NACRES:
NA.21
PubChem Substance ID:
UNSPSC Code:
12352302
EC Number:
237-707-0
MDL number:
Assay:
98.0-102.0%
Grade:
ACS reagent
Form:
powder
产品名称
磷酸钠 二元 七水合物, ACS reagent, 98.0-102.0%
InChI key
PYLIXCKOHOHGKQ-UHFFFAOYSA-L
InChI
1S/2Na.H3O4P.7H2O/c;;1-5(2,3)4;;;;;;;/h;;(H3,1,2,3,4);7*1H2/q2*+1;;;;;;;;/p-2
SMILES string
O.O.O.O.O.O.O.[Na+].[Na+].OP([O-])([O-])=O
grade
ACS reagent
vapor density
4.9 (vs air)
assay
98.0-102.0%
form
powder
impurities
≤0.005% Insoluble matter
pH
8.7-9.3 (25 °C, 5% in solution)
density
1.68 g/mL at 25 °C (lit.)
anion traces
chloride (Cl-): ≤0.001%
sulfate (SO42-): ≤0.005%
cation traces
Fe: ≤0.001%
heavy metals: ≤0.001% (by ICP)
Quality Level
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Application
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。
General description
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。
存储类别
13 - Non Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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