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Merck

13464

Sigma-Aldrich

Sulfato de sodio

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

Fórmula lineal:
Na2SO4
Número de CAS:
Peso molecular:
142.04
EC Number:
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:
NACRES:
NA.21

Quality Level

grade

puriss.

assay

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

form

crystalline

quality

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

impurities

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)

loss

≤0.5% loss on drying, 130 °C

pH

5.2-8 (20 °C, 50 g/L)

mp

884 °C (lit.)

density

2.68 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤200 mg/kg

cation traces

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

suitability

complies for appearance of solution

SMILES string

[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 key

PMZURENOXWZQFD-UHFFFAOYSA-L

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General description

Sodium sulfate (Na2SO4) can be obtained directly via precipitation from a saturated solution of Na2SO4 at room temperature (20°C). Its crystallization and growth rates at room temperature (20°C) under various conditions have been investigated. Sodium sulfate can be produced during Leblanc process, from sodium chloride and sulfuric acid.

Application

Sodium sulfate (Na2SO4) may be employed as a reagent for the precipitation of globulins during the estimation of proteins in blood.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificados de análisis (COA)

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Thomas M
Sodium (2004)
The use of sodium sulfate as the globulin precipitant in the determination of proteins in blood.
Howe PE.
The Journal of Biological Chemistry, 49(1), 93-107 (1921)
How does sodium sulfate crystallize? Implications for the decay and testing of building materials.
Rodriguez-Navarro C, et al.
Cement and Concrete Research, 30(10), 1527-1534 (2000)
Teppei Adachi et al.
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Expression of heat shock protein A4 (HSPA4, also called Apg-2), a member of the HSP110 family, is induced by several forms of stress. The physiological and pathological functions of HSPA4 in the intestine remain to be elucidated. We assessed HSPA4
Clément Cartier et al.
Water research, 47(2), 661-671 (2012-11-24)
Release of lead from 80% partially replaced service lines was compared to full lead service lines using harvested-stabilized lead pipes and field brass connectors. After more than a year of stabilization, lead release was consistent with field samples. Over the

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