推荐产品
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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相关类别
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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