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Merck

13464

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:
7757-82-6
Molecular Weight:
142.04
NACRES:
NA.21
PubChem Substance ID:
329750184
UNSPSC Code:
12352302
EC Number:
231-820-9
MDL number:
MFCD00003504
eCl@ss:
38030405
Assay:
99.0-100.5% (calc. to the dried substance)
Form:
crystalline

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InChI key

PMZURENOXWZQFD-UHFFFAOYSA-L

InChI

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

SMILES string

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

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)

Quality Level

200

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

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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.

flash_point_f

Not applicable

flash_point_c

Not applicable

Storage Class

13 - Non Combustible Solids

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

13464-BULK-H: + 13464-VAR-R: + 13464-6X1KG-R: + 13464-6X2.5KG-R: + 13464-VAR-R-D: + 13464-100KG-H: + 13464-25KG-H: + 13464-1KG-R: + 13464-2.5KG-R: + 13464-50KG-H: + 13464-BULK-R:

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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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