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13464

Sigma-Aldrich

Sodium sulfate

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

Linear Formula:
Na2SO4
CAS Number:
Molecular Weight:
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 Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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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.
Inflammatory bowel diseases, 21(1), 31-39 (2014-12-02)
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
Betina Fejerskov et al.
ACS applied materials & interfaces, 4(9), 4981-4990 (2012-09-04)
In this work, we characterize physical hydrogels based on poly(vinyl alcohol), PVA, as intelligent biointerfaces for surface-mediated drug delivery. Specifically, we assemble microstructured (μS) surface adhered hydrogels via noncryogenic gelation of PVA, namely polymer coagulation using sodium sulfate (Na(2)SO(4)). We

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