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06203 Sigma-Aldrich

Sodium hydroxide

puriss., meets analytical specification of Ph. Eur., BP, NF, E524, 98-100.5%, pellets

Synonym: ‘Caustic soda’

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Properties

Related Categories Acids & Bases, Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography, Bases,
Quality Level   200
vapor density   >1 (vs air)
vapor pressure   <18 mmHg ( 20 °C)
  3 mmHg ( 37 °C)
grade   puriss.
assay   98-100.5%
form   pellets
quality   meets analytical specification of Ph. Eur., BP, NF, E524
impurities   ≤0.0005% total nitrogen (N)
  ≤0.002% heavy metals (as Pb)
  ≤0.5% Na2CO3
mp   318 °C (lit.)
solubility   water: soluble 1260 g/L at 20 °C
density   2.13 g/cm3 at 20 °C
anion traces   chloride (Cl-): ≤20 mg/kg
  phosphate (PO43-): ≤10 mg/kg
  silicate (as SiO2): ≤100 mg/kg
  sulfate (SO42-): ≤30 mg/kg
cation traces   Al: ≤10 mg/kg
  As: ≤2 mg/kg
  Ca: ≤10 mg/kg
  Fe: ≤10 mg/kg
  Hg: ≤1 mg/kg
  K: ≤1000 mg/kg
  Pb: ≤0.5 mg/kg
SMILES string   [OH-].[Na+]
InChI   1S/Na.H2O/h;1H2/q+1;/p-1
InChI key   HEMHJVSKTPXQMS-UHFFFAOYSA-M
Safety & Documentation

Safety Information

Symbol 
GHS05  GHS05
Signal word 
Danger
Hazard statements 
RIDADR 
UN 1823 8 / PGII
WGK Germany 
WGK 1
RTECS 
WB4900000
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable
Protocols & Articles

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