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Merck

04269

Sigma-Aldrich

磷酸二氢钠二水合物 二水合物

meets analytical specification of Ph. Eur., BP, USP, FCC, E 339, 98-100.5% (calc. to the dried substance)

别名:

磷酸二氢钠 二水合物

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About This Item

线性分子式:
NaH2PO4 · 2H2O
CAS号:
分子量:
156.01
EC號碼:
MDL號碼:
分類程式碼代碼:
12161700
PubChem物質ID:
NACRES:
NA.25

化驗

98-100.5% (calc. to the dried substance)

形狀

powder or crystals

品質

meets analytical specification of Ph. Eur., BP, USP, FCC, E 339

雜質

heavy metals (as Pb), complies
organic volatile impurities, complies
reducing matter, complies
related substances, complies
residual solvents, complies
≤0.2% water-insoluble matter

損耗

21.5-24.0% loss on drying, 130 °C

pH值

4.1-5.0 (20 °C, 1%)
4.2-4.5 (20 °C, 5%)

負離子痕跡

chloride (Cl-): ≤50 mg/kg
fluoride (F-): ≤10 mg/kg
sulfate (SO42-): ≤200 mg/kg

正離子痕跡

Al:, in accordance
As: ≤1 mg/kg
Ca: ≤20 mg/kg
Ca:, in accordance
Cd: ≤1 mg/kg
Cu: ≤10 mg/kg
Fe: ≤5 mg/kg
Hg: ≤1 mg/kg
Mg: ≤20 mg/kg
Pb: ≤4 mg/kg
Zn: ≤10 mg/kg

適合性

complies for appearance of solution

SMILES 字串

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

InChI

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

InChI 密鑰

VBJGJHBYWREJQD-UHFFFAOYSA-M

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相关类别

應用

磷酸二氢钠二水合物用于制备磷酸盐缓冲液。也用作高效液相色谱的流动相。

生化/生理作用

磷酸二氢钠是一种具有高缓冲能力的化学试剂,用于制备生物缓冲液。作为磷酸盐补充剂用于确定磷酸盐补充剂能否预防产前缺乏磷酸盐的极低出生体重儿的佝偻病。

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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