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13464

Sigma-Aldrich

硫酸钠

puriss., meets analytical specification of Ph. Eur., BP, USP, anhydrous, 99.0-100.5% (calc. to the dried substance)

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About This Item

線性公式:
Na2SO4
CAS號碼:
分子量::
142.04
EC號碼:
MDL號碼:
分類程式碼代碼:
12352302
PubChem物質ID:
NACRES:
NA.21

品質等級

等級

puriss.

化驗

99.0-100.5% (calc. to the dried substance)

形狀

crystalline

品質

meets analytical specification of Ph. Eur., BP, USP

雜質

acidity or alkalinity, complies
residual solvents, complies
≤0.001% heavy metals (as Pb)
≤0.04% free alkali (as NaOH)
≤0.05% free acid (as H2SO4)

損耗

≤0.5% loss on drying, 130 °C

pH值

5.2-8 (20 °C, 50 g/L)

mp

884 °C (lit.)

密度

2.68 g/mL at 25 °C (lit.)

負離子痕跡

chloride (Cl-): ≤200 mg/kg

正離子痕跡

As: ≤2 mg/kg
Ca: ≤50 mg/kg
Fe: ≤50 mg/kg
Mg: ≤50 mg/kg
Zn: ≤300 mg/kg

適合性

complies for appearance of solution

SMILES 字串

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

InChI

1S/2Na.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2

InChI 密鑰

PMZURENOXWZQFD-UHFFFAOYSA-L

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一般說明

硫酸钠(Na2SO4)可以在室温(20°C)下通过从饱和的Na2SO4溶液中直接沉淀获得。其在各种条件下于室温(20℃)进行结晶和生长速率已有研究。 在Leblanc过程中,可通过氯化钠和硫酸生成硫酸钠。

應用

在估算血液的蛋白质含量时,硫酸钠(Na2SO4)可用作沉淀球蛋白的试剂。

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 3

閃點(°F)

Not applicable

閃點(°C)

Not applicable


分析證明 (COA)

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