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04269

Sigma-Aldrich

磷酸二氢钠二水合物 二水合物

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

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:
13472-35-0
分子量:
156.01
EC號碼:
231-449-2
MDL號碼:
MFCD00149209
分類程式碼代碼:
12161700
PubChem物質ID:
329747903
NACRES:
NA.25

品質等級

200

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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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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