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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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Properties

Related Categories Chemical Synthesis, Essential Chemicals, Inorganic Salts, Research Essentials, Salts,
InChI Key   PMZURENOXWZQFD-UHFFFAOYSA-L
grade   puriss.
assay   99.0-100.5% (calc. to the dried substance)
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
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

Description

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.

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
1
RTECS 
WE1650000

Documents

Certificate of Analysis

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Protocols & Articles
Peer-Reviewed Papers
15

References

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