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1.12533 Sigma-Aldrich

Dodecyl sulfate sodium salt

for biochemistry and surfactant tests

Synonym: Dodecyl sulfate sodium salt, Lauryl sulfate sodium salt, SDS, Dodecyl sodium sulfate

  • CAS Number 151-21-3

  • Empirical Formula (Hill Notation) C12H25NaO4S

  • Molecular Weight 288.38

  •  MDL number MFCD00036175

  •  EC Index Number 205-788-1

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Properties

Quality Level   100
potency   1427 mg/kg LD50, oral (Rat)
  >2000 mg/kg LD50, skin (Rabbit)
pH   6-9 (20 °C, 10 g/L in H2O)
mp   204-207 °C
transition temp   flash point >150 °C
solubility   >130 g/L
density   1.1 g/cm3 at 20 °C
bulk density   490‑560 kg/m3
InChI   1S/C12H26O4S.Na/c1-2-3-4-5-6-7-8-9-10-11-12-16-17(13,14)15;/h2-12H2,1H3,(H,13,14,15);/q;+1/p-1
InChI key   DBMJMQXJHONAFJ-UHFFFAOYSA-M
storage conditions   Store at +15°C to +25°C.

Description

Analysis Note

Assay (two-phase titration): ≥ 99
Homologue purity C-12: ≥ 98
Identity (IR-spectrum): passes test
Solubility (Ethanol): passes test
Absorbance A (220-350 nm; 3 %; 1 cm; water): ≤ 0.10
Chloride (Cl): ≤ 0.01 %
Phosphate (PO₄): ≤ 0.0001 %
Heavy metals (as Pb): ≤ 0.0005 %
Water (according to Karl Fischer): ≤ 1

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